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  • Ubuntu 13.10 install ISO crashes on VirtualBox Mac 4.3

    - by John Allsup
    Does anybody know what to do about this? Machine is a 2008 Core 2 Duo iMac with 4GB RAM. (And 64bit Debian 7 boots OK, but I've not tried installing under the latest version of VirtualBox as I have just upgraded VBox today.) VirtualBox 4.3, upon trying to boot a machine with the Ubuntu 13.10 (64bit) iso (with the VM configured for Ubuntu 64bit) crashes, with the following information: Failed to open a session for the virtual machine Ubuntu64. The VM session was aborted. Result Code: NS_ERROR_FAILURE (0x80004005) Component: SessionMachine Interface: ISession {12f4dcdb-12b2-4ec1-b7cd-ddd9f6c5bf4d} === Head of crash dump is below Process: VirtualBoxVM [716] Path: /Applications/VirtualBox.app/Contents/MacOS/VirtualBoxVM Identifier: VirtualBoxVM Version: ??? (???) Code Type: X86 (Native) Parent Process: VBoxSVC [644] Date/Time: 2013-10-17 22:58:23.679 +0100 OS Version: Mac OS X 10.6.8 (10K549) Report Version: 6 Exception Type: EXC_BAD_ACCESS (SIGBUS) Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000040 Crashed Thread: 0 Dispatch queue: com.apple.main-thread Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 com.apple.CoreFoundation 0x92a25c03 CFSetApplyFunction + 83 1 com.apple.framework.IOKit 0x95557ad4 __IOHIDManagerInitialEnumCallback + 69 2 com.apple.CoreFoundation 0x92a2442b __CFRunLoopDoSources0 + 1563 3 com.apple.CoreFoundation 0x92a21eef __CFRunLoopRun + 1071 4 com.apple.CoreFoundation 0x92a213c4 CFRunLoopRunSpecific + 452 5 com.apple.CoreFoundation 0x92a211f1 CFRunLoopRunInMode + 97 6 com.apple.HIToolbox 0x98eb5e04 RunCurrentEventLoopInMode + 392 7 com.apple.HIToolbox 0x98eb5af5 ReceiveNextEventCommon + 158 8 com.apple.HIToolbox 0x98eb5a3e BlockUntilNextEventMatchingListInMode + 81 9 com.apple.AppKit 0x9971b595 _DPSNextEvent + 847 10 com.apple.AppKit 0x9971add6 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 156 11 com.apple.AppKit 0x996dd1f3 -[NSApplication run] + 821 12 QtGuiVBox 0x019f19e1 QEventDispatcherMac::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 1505 13 QtCoreVBox 0x018083b1 QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 65 14 QtCoreVBox 0x018086fa QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 170 15 QtGuiVBox 0x01eea9e5 QDialog::exec() + 261 16 VirtualBox.dylib 0x011234b8 TrustedMain + 1108104 17 VirtualBox.dylib 0x01126d68 TrustedMain + 1122616 18 VirtualBox.dylib 0x010fac19 TrustedMain + 942057 19 VirtualBox.dylib 0x010f9b3d TrustedMain + 937741 20 VirtualBox.dylib 0x010f81dd TrustedMain + 931245 21 VirtualBox.dylib 0x010f85b8 TrustedMain + 932232 22 VirtualBox.dylib 0x0109d4f8 TrustedMain + 559304 23 VirtualBox.dylib 0x0101521e TrustedMain + 1518 24 ...virtualbox.app.VirtualBoxVM 0x00002e7e start + 2766 25 ...virtualbox.app.VirtualBoxVM 0x000024b5 start + 261 26 ...virtualbox.app.VirtualBoxVM 0x000023e5 start + 53 ==== And please somebody fix the code so that you can just delimit large blocks of code at the start and the end without indenting every line manually by 4 spaces.

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  • What is Linq?

    - by Aamir Hasan
    The way data can be retrieved in .NET. LINQ provides a uniform way to retrieve data from any object that implements the IEnumerable<T> interface. With LINQ, arrays, collections, relational data, and XML are all potential data sources. Why LINQ?With LINQ, you can use the same syntax to retrieve data from any data source:var query = from e in employeeswhere e.id == 1select e.nameThe middle level represents the three main parts of the LINQ project: LINQ to Objects is an API that provides methods that represent a set of standard query operators (SQOs) to retrieve data from any object whose class implements the IEnumerable<T> interface. These queries are performed against in-memory data.LINQ to ADO.NET augments SQOs to work against relational data. It is composed of three parts.LINQ to SQL (formerly DLinq) is use to query relational databases such as Microsoft SQL Server. LINQ to DataSet supports queries by using ADO.NET data sets and data tables. LINQ to Entities is a Microsoft ORM solution, allowing developers to use Entities (an ADO.NET 3.0 feature) to declaratively specify the structure of business objects and use LINQ to query them. LINQ to XML (formerly XLinq) not only augments SQOs but also includes a host of XML-specific features for XML document creation and queries. What You Need to Use LINQLINQ is a combination of extensions to .NET languages and class libraries that support them. To use it, you’ll need the following: Obviously LINQ, which is available from the new Microsoft .NET Framework 3.5 that you can download at http://go.microsoft.com/?linkid=7755937.You can speed up your application development time with LINQ using Visual Studio 2008, which offers visual tools such as LINQ to SQL designer and the Intellisense  support with LINQ’s syntax.Optionally, you can download the Visual C# 2008 Expression Edition tool at www.microsoft.com/vstudio/express/download. It is the free edition of Visual Studio 2008 and offers a lot of LINQ support such as Intellisense and LINQ to SQL designer. To use LINQ to ADO.NET, you need SQL

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  • Dual Boot issues with Windows 7 and Ubuntu

    - by Michael
    I'm finding myself in a rather unique situation. I've read through just about every resource I can find about this and while things have helped me understand some background, I haven't yet been able to find a solution. So I'm asking here. I originally had just a Windows 7 64-bit OS installation on my desktop. Learning that I couldn't do anything with Apache, PHP and MySql from within a 64-bit system, I did some research and found out that I could use Ubuntu. I've installed the latest version: 11.04. I created a CD to install Ubuntu from and the install went just fine. I installed it side-by-side with Windows 7. I can boot into Ubuntu just fine through the dual-boot option. When I reboot to load Windows though, the Grub2 list shows Windows 7 (loader) and when I select this option the Windows System Recovery loads instead of the actual OS. I haven't made it past there because I didn't know what to do. I just shut the computer down and rebooted into Ubuntu. I've been working for the last hour and a half to try to figure out how to boot into the Windows 7 OS and I haven't got a clue. While I'm somewhat proficient with Windows 7, I'm totally new to Ubuntu, so if you do know what needs to happen, please keep it simple enough that I'll be able to understand. Thanks for all your help in advance. Here's the results after using the Boot Info Script: Boot Info Script 0.55 dated February 15th, 2010 ============================= Boot Info Summary: ============================== => Grub 2 is installed in the MBR of /dev/sda and looks on the same drive in partition #5 for cbh. => Windows is installed in the MBR of /dev/sdb => Grub 2 is installed in the MBR of /dev/mapper/pdc_bdadcfbdif and looks on the same drive in partition #5 for cbh. sda1: _________________________________________________________________________ File system: ntfs Boot sector type: Windows Vista/7 Boot sector info: No errors found in the Boot Parameter Block. Mounting failed: fuse: mount failed: Device or resource busy fuse: mount failed: Device or resource busy sda2: _________________________________________________________________________ File system: ntfs Boot sector type: Windows Vista/7 Boot sector info: No errors found in the Boot Parameter Block. Mounting failed: fuse: mount failed: Device or resource busy fuse: mount failed: Device or resource busy fuse: mount failed: Device or resource busy fuse: mount failed: Device or resource busy sda3: _________________________________________________________________________ File system: ntfs Boot sector type: Windows Vista/7 Boot sector info: No errors found in the Boot Parameter Block. Mounting failed: fuse: mount failed: Device or resource busy fuse: mount failed: Device or resource busy fuse: mount failed: Device or resource busy fuse: mount failed: Device or resource busy fuse: mount failed: Device or resource busy fuse: mount failed: Device or resource busy sdb1: _________________________________________________________________________ File system: ntfs Boot sector type: Windows Vista/7 Boot sector info: No errors found in the Boot Parameter Block. Operating System: Boot files/dirs: /bootmgr /Boot/BCD sdb2: _________________________________________________________________________ File system: ntfs Boot sector type: Windows Vista/7 Boot sector info: No errors found in the Boot Parameter Block. Operating System: Boot files/dirs: sdb3: _________________________________________________________________________ File system: ntfs Boot sector type: Windows Vista/7 Boot sector info: No errors found in the Boot Parameter Block. Operating System: Boot files/dirs: /bootmgr /boot/BCD sdb4: _________________________________________________________________________ File system: Extended Partition Boot sector type: - Boot sector info: sdb5: _________________________________________________________________________ File system: ext4 Boot sector type: - Boot sector info: Operating System: Ubuntu 11.04 Boot files/dirs: /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img sdb6: _________________________________________________________________________ File system: swap Boot sector type: - Boot sector info: pdc_bdadcfbdif1: _________________________________________________________________________ File system: ntfs Boot sector type: Windows Vista/7 Boot sector info: No errors found in the Boot Parameter Block. Operating System: Boot files/dirs: /bootmgr /Boot/BCD pdc_bdadcfbdif2: _________________________________________________________________________ File system: ntfs Boot sector type: Windows Vista/7 Boot sector info: No errors found in the Boot Parameter Block. Operating System: Windows 7 Boot files/dirs: /bootmgr /Boot/BCD /Windows/System32/winload.exe pdc_bdadcfbdif3: _________________________________________________________________________ File system: Boot sector type: Unknown Boot sector info: Mounting failed: fuse: mount failed: Device or resource busy fuse: mount failed: Device or resource busy fuse: mount failed: Device or resource busy fuse: mount failed: Device or resource busy fuse: mount failed: Device or resource busy fuse: mount failed: Device or resource busy mount: unknown filesystem type '' =========================== Drive/Partition Info: ============================= Drive: sda ___________________ _____________________________________________________ Disk /dev/sda: 750.2 GB, 750156374016 bytes 255 heads, 63 sectors/track, 91201 cylinders, total 1465149168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes Partition Boot Start End Size Id System /dev/sda1 * 2,048 206,847 204,800 7 HPFS/NTFS /dev/sda2 206,911 1,440,372,735 1,440,165,825 7 HPFS/NTFS /dev/sda3 1,440,372,736 1,464,856,575 24,483,840 7 HPFS/NTFS Drive: sdb ___________________ _____________________________________________________ Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes Partition Boot Start End Size Id System /dev/sdb1 * 2,048 206,847 204,800 7 HPFS/NTFS /dev/sdb2 206,911 1,342,554,688 1,342,347,778 7 HPFS/NTFS /dev/sdb3 1,930,344,448 1,953,521,663 23,177,216 7 HPFS/NTFS /dev/sdb4 1,342,556,158 1,930,344,447 587,788,290 5 Extended /dev/sdb5 1,342,556,160 1,896,806,399 554,250,240 83 Linux /dev/sdb6 1,896,808,448 1,930,344,447 33,536,000 82 Linux swap / Solaris Drive: pdc_bdadcfbdif ___________________ _____________________________________________________ Disk /dev/mapper/pdc_bdadcfbdif: 750.0 GB, 749999947776 bytes 255 heads, 63 sectors/track, 91182 cylinders, total 1464843648 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes Partition Boot Start End Size Id System /dev/mapper/pdc_bdadcfbdif1 * 2,048 206,847 204,800 7 HPFS/NTFS /dev/mapper/pdc_bdadcfbdif2 206,911 1,440,372,735 1,440,165,825 7 HPFS/NTFS /dev/mapper/pdc_bdadcfbdif3 1,440,372,736 1,464,856,575 24,483,840 7 HPFS/NTFS /dev/mapper/pdc_bdadcfbdif3 ends after the last sector of /dev/mapper/pdc_bdadcfbdif blkid -c /dev/null: ____________________________________________________________ Device UUID TYPE LABEL /dev/mapper/pdc_bdadcfbdif1 888E54CC8E54B482 ntfs SYSTEM /dev/mapper/pdc_bdadcfbdif2 C2766BF6766BEA1D ntfs OS /dev/mapper/pdc_bdadcfbdif: PTTYPE="dos" /dev/sda1 888E54CC8E54B482 ntfs SYSTEM /dev/sda2 C2766BF6766BEA1D ntfs OS /dev/sda3 BE6CA31D6CA2CF87 ntfs HP_RECOVERY /dev/sda promise_fasttrack_raid_member /dev/sdb1 20B65685B6565B7C ntfs SYSTEM /dev/sdb2 B4467A314679F508 ntfs HP /dev/sdb3 6E10B7A410B77227 ntfs FACTORY_IMAGE /dev/sdb4: PTTYPE="dos" /dev/sdb5 266f9801-cf4f-4acc-affa-2092be035f0c ext4 /dev/sdb6 1df35749-a887-45ff-a3de-edd52239847d swap /dev/sdb: PTTYPE="dos" error: /dev/mapper/pdc_bdadcfbdif3: No such file or directory error: /dev/sdc: No medium found error: /dev/sdd: No medium found error: /dev/sde: No medium found error: /dev/sdf: No medium found error: /dev/sdg: No medium found ============================ "mount | grep ^/dev output: =========================== Device Mount_Point Type Options /dev/sdb5 / ext4 (rw,errors=remount-ro,commit=0) =========================== sdb5/boot/grub/grub.cfg: =========================== # # DO NOT EDIT THIS FILE # # It is automatically generated by grub-mkconfig using templates # from /etc/grub.d and settings from /etc/default/grub # ### BEGIN /etc/grub.d/00_header ### if [ -s $prefix/grubenv ]; then set have_grubenv=true load_env fi set default="0" if [ "${prev_saved_entry}" ]; then set saved_entry="${prev_saved_entry}" save_env saved_entry set prev_saved_entry= save_env prev_saved_entry set boot_once=true fi function savedefault { if [ -z "${boot_once}" ]; then saved_entry="${chosen}" save_env saved_entry fi } function recordfail { set recordfail=1 if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi } function load_video { insmod vbe insmod vga insmod video_bochs insmod video_cirrus } insmod part_msdos insmod ext2 set root='(/dev/sdb,msdos5)' search --no-floppy --fs-uuid --set=root 266f9801-cf4f-4acc-affa-2092be035f0c if loadfont /usr/share/grub/unicode.pf2 ; then set gfxmode=auto load_video insmod gfxterm fi terminal_output gfxterm insmod part_msdos insmod ext2 set root='(/dev/sdb,msdos5)' search --no-floppy --fs-uuid --set=root 266f9801-cf4f-4acc-affa-2092be035f0c set locale_dir=($root)/boot/grub/locale set lang=en_US insmod gettext if [ "${recordfail}" = 1 ]; then set timeout=-1 else set timeout=10 fi ### END /etc/grub.d/00_header ### ### BEGIN /etc/grub.d/05_debian_theme ### set menu_color_normal=white/black set menu_color_highlight=black/light-gray if background_color 44,0,30; then clear fi ### END /etc/grub.d/05_debian_theme ### ### BEGIN /etc/grub.d/10_linux ### if [ ${recordfail} != 1 ]; then if [ -e ${prefix}/gfxblacklist.txt ]; then if hwmatch ${prefix}/gfxblacklist.txt 3; then if [ ${match} = 0 ]; then set linux_gfx_mode=keep else set linux_gfx_mode=text fi else set linux_gfx_mode=text fi else set linux_gfx_mode=keep fi else set linux_gfx_mode=text fi export linux_gfx_mode if [ "$linux_gfx_mode" != "text" ]; then load_video; fi menuentry 'Ubuntu, with Linux 2.6.38-8-generic-pae' --class ubuntu --class gnu-linux --class gnu --class os { recordfail set gfxpayload=$linux_gfx_mode insmod part_msdos insmod ext2 set root='(/dev/sdb,msdos5)' search --no-floppy --fs-uuid --set=root 266f9801-cf4f-4acc-affa-2092be035f0c linux /boot/vmlinuz-2.6.38-8-generic-pae root=UUID=266f9801-cf4f-4acc- affa-2092be035f0c ro quiet splash vt.handoff=7 initrd /boot/initrd.img-2.6.38-8-generic-pae } menuentry 'Ubuntu, with Linux 2.6.38-8-generic-pae (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os { recordfail set gfxpayload=$linux_gfx_mode insmod part_msdos insmod ext2 set root='(/dev/sdb,msdos5)' search --no-floppy --fs-uuid --set=root 266f9801-cf4f-4acc-affa-2092be035f0c echo 'Loading Linux 2.6.38-8-generic-pae ...' linux /boot/vmlinuz-2.6.38-8-generic-pae root=UUID=266f9801-cf4f-4acc-affa-2092be035f0c ro single echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-2.6.38-8-generic-pae } ### END /etc/grub.d/10_linux ### ### BEGIN /etc/grub.d/20_linux_xen ### ### END /etc/grub.d/20_linux_xen ### ### BEGIN /etc/grub.d/20_memtest86+ ### menuentry "Memory test (memtest86+)" { insmod part_msdos insmod ext2 set root='(/dev/sdb,msdos5)' search --no-floppy --fs-uuid --set=root 266f9801-cf4f-4acc-affa-2092be035f0c linux16 /boot/memtest86+.bin } menuentry "Memory test (memtest86+, serial console 115200)" { insmod part_msdos insmod ext2 set root='(/dev/sdb,msdos5)' search --no-floppy --fs-uuid --set=root 266f9801-cf4f-4acc-affa-2092be035f0c linux16 /boot/memtest86+.bin console=ttyS0,115200n8 } ### END /etc/grub.d/20_memtest86+ ### ### BEGIN /etc/grub.d/30_os-prober ### menuentry "Windows 7 (loader) (on /dev/sdb1)" --class windows --class os { insmod part_msdos insmod ntfs set root='(/dev/sdb,msdos1)' search --no-floppy --fs-uuid --set=root 20B65685B6565B7C chainloader +1 } menuentry "Windows Recovery Environment (loader) (on /dev/sdb3)" --class windows --class os { insmod part_msdos insmod ntfs set root='(/dev/sdb,msdos3)' search --no-floppy --fs-uuid --set=root 6E10B7A410B77227 drivemap -s (hd0) ${root} chainloader +1 } ### END /etc/grub.d/30_os-prober ### ### BEGIN /etc/grub.d/40_custom ### # This file provides an easy way to add custom menu entries. Simply type the # menu entries you want to add after this comment. Be careful not to change # the 'exec tail' line above. ### END /etc/grub.d/40_custom ### ### BEGIN /etc/grub.d/41_custom ### if [ -f $prefix/custom.cfg ]; then source $prefix/custom.cfg; fi ### END /etc/grub.d/41_custom ### =============================== sdb5/etc/fstab: =============================== # /etc/fstab: static file system information. # # Use 'blkid -o value -s UUID' to print the universally unique identifier # for a device; this may be used with UUID= as a more robust way to name # devices that works even if disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0 # / was on /dev/sdb5 during installation UUID=266f9801-cf4f-4acc-affa-2092be035f0c / ext4 errors=remount-ro 0 1 # swap was on /dev/sdb6 during installation UUID=1df35749-a887-45ff-a3de-edd52239847d none swap sw 0 0 =================== sdb5: Location of files loaded by Grub: =================== 900.1GB: boot/grub/core.img 825.0GB: boot/grub/grub.cfg 688.7GB: boot/initrd.img-2.6.38-8-generic-pae 688.0GB: boot/vmlinuz-2.6.38-8-generic-pae 688.7GB: initrd.img 688.0GB: vmlinuz =========================== Unknown MBRs/Boot Sectors/etc ======================= Unknown BootLoader on pdc_bdadcfbdif3 =======Devices which don't seem to have a corresponding hard drive============== sdc sdd sde sdf sdg =============================== StdErr Messages: =============================== ERROR: dos: partition address past end of RAID device hexdump: /dev/mapper/pdc_bdadcfbdif3: No such file or directory hexdump: /dev/mapper/pdc_bdadcfbdif3: No such file or directory ERROR: dos: partition address past end of RAID device

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  • HTC Launches HTC Mozart Windows Phone 7 In India

    - by Gopinath
    Here comes the second Windows Phone 7 device to Indian market – HTC Mozart. HTC India website has a special page for this smartphone that showcases details of the phone. The phone is not yet  widely available in retail stores across Indian and it’s expected to be available in couple of weeks. The first Windows Phone 7 smartphone released in India was also from HTC, the HTC HD7. It’s available in selected retail outlets at a price tag of  Rs. 27,885. HTC Mozart is expected to cost around Rs 30,000. Features of HTC Mozart Specs of  HTC 7 Mozart is nearly identical to HTC HD7, apart from 8 GB internal storage, 3.7 inches screen size and 8 MP camera. 3.7 inch, 480 x 800 16M colours S-LCD capacitive touchscreen. Accelerometer, Proximity sensor and pinch Zoom. 11.9mm thick and Weighs 130g. 1Ghz Qualcomm Snapdragon QSD8250 Processor. 8GB Internal Memory with no Expansion Slot. 8 MP Camera with Auto focus, Geo tagging and Xenon Flash, 720p Video recording, No secondary camera. 3G HSDPA 7.2 Mbps and HSUPA 2 Mbps, Bluetooth 2.1 with A2DP, Wi-Fi 802.11 b/g/n FM radio with RDS, GPS with A-GPS. 1300 mAh Li-Ion Battery Standby 360 h (2G) and 435 h (3G), Talk time 6 h 40 min (2G) and 5 h 30 min (3G). This article titled,HTC Launches HTC Mozart Windows Phone 7 In India, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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  • Smithsonian Showcases Video Game History with The Art of Video Games [Video]

    - by Jason Fitzpatrick
    The Art of Video Games is the Smithsonian’s look at the history of video games; check out this video trailer to see what the exhibition is all about and hear from some notable folks. From the Smithsonian listing for the exhibition: The Art of Video Games is one of the first exhibitions to explore the forty-year evolution of video games as an artistic medium, with a focus on striking visual effects and the creative use of new technologies. It features some of the most influential artists and designers during five eras of game technology, from early pioneers to contemporary designers. The exhibition focuses on the interplay of graphics, technology and storytelling through some of the best games for twenty gaming systems ranging from the Atari VCS to the PlayStation 3. The exhibit will be at the Smithsonian until the end of September and will then begin touring the country. Hit up the link below for more information. The Art of Video Games Tour [via Neatorama] How To Properly Scan a Photograph (And Get An Even Better Image) The HTG Guide to Hiding Your Data in a TrueCrypt Hidden Volume Make Your Own Windows 8 Start Button with Zero Memory Usage

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  • VirtualBox host-only networking fails on Ubuntu 11.10 host

    - by Jeremy Kendall
    I've installed Ubuntu 11.10 on a new Lenovo Thinkpad 420s and I'm trying to get some VirtualBox VMs up and running (using Vagrant). Everything works fine until I try to add host-only networking. This is the failure I get in the terminal: I set logging to debug and tried again. Here's a paste of the relevant portion of the log. When I try to add host-only networks with the VirtualBox gui (File-Preferences-Networking-Add host-only networking), I get the following error message: This error is occurring with three different virtual boxes, all Ubuntu 11.10 64bit guests, one of which I've run without issue on a Windows host and an OSX host. Here is the Vagrantfile for the box I've successfully run on Windows and OSX: Vagrant::Config.run do |config| config.vm.box = "ubuntu-11.10" config.vm.box_url = "http://timhuegdon.com/vagrant-boxes/ubuntu-11.10.box" config.vm.network :hostonly, "192.168.33.10" config.vm.customize ["modifyvm", :id, "--memory", "512"] config.vm.customize ["modifyvm", :id, "--natnet1", "10.0.28.0/24"] config.vm.forward_port 80, 4567 end I've tried two other boxes as well, one of which I built last night with veewee, all of which are getting the exact same error. I've used rvm to install ruby 1.9.3-p125 [ x86_64 ], and I've got Vagrant running in its own gemset. I've Googled quite a lot and haven't been able to find any resolution. Suggestions?

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  • CodePlex Daily Summary for Tuesday, March 09, 2010

    CodePlex Daily Summary for Tuesday, March 09, 2010New Projects.NET Excel Wrapper - Read, Write, Edit & Automate Excel Files in .NET with ease: .NET Excel Wrapper encapsulates the complexity of working with multiple Excel objects giving you one central point to do all your processing. It h...Advancement Voyage: Advancement Voyage is a high quality RPG experience that provides all the advancement and voyaging that a player could hope for.ASP.Net Routing configuration: ASP.NET routing configuration enables you to configure the routes in the web.config bbinjest: bbinjestBuildUp: BuildUp is a build number increment tool for C# .net projects. It is run as a post build step in Visual Studio.Controlled Vocabulary: This project is devoted to creating tools to assist with Controlling Vocabulary in communication. The initial delivery is an Outlook 2010 Add-in w...CycleList: A replacement for the WPF ListBox Control. Displays only a single item and allows the user to change the selected item by clicking on it once. Very...Forensic Suite: A suite of security softwareFREE DNN Chat Module for 123 Flash Chat -- Embed FREE Chat Room!: 123 Flash Chat is a live chat solution and its DotNetNuke Chat Module helps to embed a live chat room into website with DotNetNuke(DNN) integrated ...HouseFly experimental controls: Experimental controls for use in HouseFly.ICatalogAll: junkMidiStylus: MidiStylus allows you to control MIDI-enabled hardware or software using your pressure-sensitive pen tablet. The program maps the X position, Y po...myTunes: Search for your favorite artistsNColony - Pluggable Socialism?: NColony will maximize the use of MEF to create flexible application architectures through a suite of plug-in solutions. If MEF is an outlet for plu...Network Monitor Decryption Expert: NmDecrypt is a Network Monitor Expert which when given a trace with encrypted frames, a security certificate, and a passkey will create a new trace...occulo: occulo is a free steganography program, meant to embed files within images with optional encrytion. Open Ant: A implementation of a Open Source Ant which is created to show what is possible in the serious game AntMe! The First implementation of that ProjectProgramming Patterns by example: Design patterns provide solutions to common software design problems. This project will contain samples, written in c# and ruby, of each design pat...project4k: Developing bulk mail system storing email informationQuail - Selenium Remote Control Made Easy: Quail makes it easy for Quality Assurance departments write automated tests against web applications. Both HTML and Silverlight applications can b...RedBulb for XNA Framework: RedBulb is a collection of utility functions and classes that make writing games with XNA a lot easier. Key features: Console,GUI (Labels, Buttons,...RegExpress: RegExpress is a WPF application that combines interactive demos of regular expressions with slide content. This was designed for a user group prese...RemoveFolder: Small utility program to remove empty foldersScrumTFS: ScrumTFSSharePoint - Open internal link in new window list definition: A simple SharePoint list definition to render SharePoint internal links with the option to open them in a new window.SqlSiteMap4MVC: SqlSiteMapProvider for ASP.Net MVC.T Sina .NET Client: t.sina.com.cn api 新浪微博APITest-Lint-Extensions: Test Lint is a free Typemock VS 2010 Extension that finds common problems in your unit tests as you type them. this project will host extensions ...ThinkGearNET: ThinkGearNET is a library for easy usage of the Neurosky Mindset headset from .NET .Wiki to Maml: This project enables you to write wiki syntax and have it converted into MAML syntax for Sandcastle documentation projects.WPF Undo/Redo Framework: This project attempts to solve the age-old programmer problem of supporting unlimited undo/redo in an application, in an easily reusable manner. Th...WPFValidators: WPF Validators Validações de campos para WPFWSP Listener: The WSP listener is a windows service application which waits for new WSC and WSP files in a specific folder. If a new WSC and WSP file are added, ...New Releases.NET Excel Wrapper - Read, Write, Edit & Automate Excel Files in .NET with ease: First Release: This is the first release which includes the main library release..NET Excel Wrapper - Read, Write, Edit & Automate Excel Files in .NET with ease: Updated Version: New Features:SetRangeValue using multidimensional array Print current worksheet Print all worksheets Format ranges background, color, alig...ArkSwitch: ArkSwitch v1.1.2: This release removes all memory reporting information, and is focused on stability.BattLineSvc: V2.1: - Fixed a bug where on system start-up, it would pop up a notification box to let you know the service started. Annoying! And fixed! - Fixed the ...BuildUp: BuildUp 1.0 Alpha 1: Use at your own risk!Not yet feature complete. Basic build incrementing and attribute overriding works. Still working on cascading build incremen...Controlled Vocabulary: 1.0.0.1: Initial Alpha Release. System Requirements Outlook 2010 .Net Framework 3.5 Installation 1. Close Outlook (Use Task Manager to ensure no running i...CycleList: CycleList: The binaries contain the .NET 3.5 DLL ONLY. Please download source for usage examples.FluentNHibernate.Search: 0.3 Beta: 0.3 Beta take the following changes : Mappings : - Field Mapping without specifying "Name" - Id Mapping without specifiying "Field" - Builtin Anal...FREE DNN Chat Module for 123 Flash Chat -- Embed FREE Chat Room!: 123 Flash Chat DNN Chat Module: With FREE DotNetNuke Chat Module of 123 Flash Chat, webmaster will be assist to add a chat room into DotNetNuke instantly and help to attract more ...GameStore League Manager: League Manager 1.0 release 3: This release includes a full installer so that you can get your league running faster and generate interest quicker.iExporter - iTunes playlist exporting: iExporter gui v2.3.1.0 - console v1.2.1.0: Paypal donate! Solved a big bug for iExporter ( Gui & Console ) When a track isn't located under the main iTunes library, iExporter would crash! ...jQuery.cssLess: jQuery.cssLess 0.3: New - Removed the dependency from XRegExp - Added comment support (both CSS style and C style) - Optimised it for speed - Added speed test TOD...jQuery.cssLess: jQuery.cssLess 0.4: NEW - @import directive - preserving of comments in the resulting CSS - code refactoring - more class oriented approach TODO - implement operation...MapWindow GIS: MapWindow 6.0 msi (March 8): Rewrote the shapefile saving code in the indexed case so that it uses the shape indices rather than trying to create features. This should allow s...MidiStylus: MidiStylus 0.5.1: MidiStylus Beta 0.5.1 This release contains basic functionality for transmitting MIDI data based on X position, Y position, and pressure value rea...MiniTwitter: 1.09.1: MiniTwitter 1.09.1 更新内容 修正 URL に & が含まれている時に短縮 URL がおかしくなるバグを修正Mosaictor: first executable: .exe file of the app in its current state. Mind you that this will likely be highly unstable due to heaps of uncaught errors.MvcContrib a Codeplex Foundation project: T4MVC: T4MVC is a T4 template that generates strongly typed helpers for ASP.NET MVC. You can download it below, and check out the documention here.N2 CMS: 2.0 beta: Major Changes ASP.NET MVC 2 templates Refreshed management UI LINQ support Performance improvements Auto image resize Upgrade Make a comp...NotesForGallery: ASP.NET AJAX Photo Gallery Control: NotesForGallery 2.0: PresentationNotesForGallery is an open source control on top of the Microsoft ASP.NET AJAX framework for easy displaying image galleries in the as...occulo: occulo 0.1 binaries: Windows binaries. Tested on Windows XP SP2.occulo: occulo 0.1 source: Initial source release.Open NFe: DANFE 1.9.5: Ajuste de layout e correção dos campos de ISS.patterns & practices Web Client Developer Guidance: Web Application Guidance -- March 8th Drop: This iteration we focused on documentation and bug fixes.PoshConsole: PoshConsole 2.0 Beta: With this release, I am refocusing PoshConsole... It will be a PowerShell 2 host, without support for PowerShell 1.0 I have used some of the new P...Quick Performance Monitor: QPerfmon 1.1: Now you can specify different updating frequencies.RedBulb for XNA Framework: Cipher Puzzle (Sample) Creators Club Package: RedBulb Sample Game: Cipher Puzzle http://bayimg.com/image/galgfaacb.jpgRedBulb for XNA Framework: RedBulbStarter (Base Code): This is the code you need to start with. Quick Start Guide: Download the latest version of RedBulb: http://redbulb.codeplex.com/releases/view/415...RoTwee: RoTwee 7.0.0.0 (Alpha): Now this version is under improvement of code structure and may be buggy. However movement of rotation is quite good in this version thanks to clea...SCSI Interface for Multimedia and Block Devices: Release 9 - Improvements and Bug Fixes: Changes I have made in this version: Fixed INQUIRY command timeout problem Lowered ISOBurn's memory usage significantly by not explicitly setting...SharePoint - Open internal link in new window list definition: Open link in new window list definition: First release, with english and italian localization supportSharePoint Outlook Connector: Version 1.2.3.2: Few bug fixing and some ui enhancementsSysI: sysi, release build: Better than ever -- now allows for escalation to adminThe Silverlight Hyper Video Player [http://slhvp.com]: Beta 1: Beta (1.1) The code is ready for intensive testing. I will update the code at least every second day until we are ready to freeze for V1, which wi...Truecrafting: Truecrafting 0.52: fixed several trinkets that broke just before i released 0.51, sorry fixed water elemental not doing anything while summoned if not using glyph o...Truecrafting: Truecrafting 0.53: fixed mp5 calculations when gear contained mp5 and made the formulas more efficient no need to rebuild profiles with this release if placed in th...umbracoSamplePackageCreator (beta): Working Beta: For Visual Studio 2008 creating packages for Umbraco 4.0.3.VCC: Latest build, v2.1.30307.0: Automatic drop of latest buildVCC: Latest build, v2.1.30308.0: Automatic drop of latest buildVOB2MKV: vob2mkv-1.0.3: This is a maintenance update of the VOB2MKV utility. The MKVMUX filter now describes the cluster locations using a separate SeekHead element at th...WPFValidators: WPFValidators 1.0 Beta: Primeira versão do componente ainda em Beta, pode ser utilizada em produção pois esta funcionando bem e as futuras alterações não sofreram muito im...WSDLGenerator: WSDLGenerator 0.0.06: - Added option to generate SharePoint compatible *disco.aspx file. - Changed commandline optionsWSP Listener: WSP Listener version 1.0.0.0: First version of the WSP Listener includes: Easy cop[y paste installation of WSP solutions Extended logging E-mail when installation is finish...Yet another pali text reader: Pali Text Reader App v1.1: new features/updates + search history is now a tab + format codes in dictionary + add/edit terms in the dictionary + pali keyboard inserts symbols...Most Popular ProjectsMetaSharpi4o - Indexed LINQResExBraintree Client LibraryGeek's LibrarySharepoint Feature ManagerConfiguration ManagementOragon Architecture SqlBuilderTerrain Independant Navigating Automaton v2.0WBFS ManagerMost Active ProjectsUmbraco CMSRawrSDS: Scientific DataSet library and toolsBlogEngine.NETjQuery Library for SharePoint Web ServicesFasterflect - A Fast and Simple Reflection APIFarseer Physics Enginepatterns & practices – Enterprise LibraryTeam FTW - Software ProjectIonics Isapi Rewrite Filter

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  • Free cloud web service development

    - by hyde
    I am looking for a free (as in beer) combination of services, for learning "cloud SW development" and very small scale private use (say, a private streamlined web shopping&todo list with simple auth). The combination should include the full set of needed services: DVCS service (like github) A cloud service to run the backend code A suitable data storage service (preferably not SQL), accessed by the backend (if not included in the backend service) A web service, serving the web pages seen by user, to access the backend functionality A "cloud IDE" (ideally one, two is ok too) for both backend and HTML/javascript coding If (backend) deployment uses some CI, then that Other points: Backend programming language can be anything, except VB or PHP Everything has to be in the cloud, nothing permanent on a local PC (graphics is not part of the question) Looking for ready-to-use service combination, not a virtual server where I can set anything up myself I don't care if service insists on displaying ads in the user web UI "Cheap" and "free trial" are ok too, if "free" does not exist As per example use case, storage, CPU and bandwidth quota requirements are negligible Google finds several services of course, all requiring at least registration before testing, so I'm looking for a known-good combination, so ideal answer starts with "I use this service combo: ...", contains links to services and brief description and personal experiences.

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  • How do I connect my NetXtreme BCM5755M Gigabit Ethernet PCI Express in y Dell latitude d630?

    - by Stanton.Sculpture
    Trying to get my 09:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5755M Gigabit Ethernet PCI Express (rev 02) working with my wifi. I just installed Raring Ringtail on this dell latitude D630 and I can't get it to connect without a wifi dongle. This is what I got when I typed sudo lshw -c network: *-network description: Ethernet interface product: NetXtreme BCM5755M Gigabit Ethernet PCI Express vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:09:00.0 logical name: eth0 version: 02 serial: 00:21:70:98:04:32 capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.128 firmware=5755m-v3.29 latency=0 link=no multicast=yes port=twisted pair resources: irq:44 memory:fe8f0000-fe8fffff *-network description: Wireless interface physical id: 2 bus info: usb@2:1 logical name: wlan0 serial: 7c:dd:90:11:a0:10 capabilities: ethernet physical wireless configuration: broadcast=yes driver=rt2800usb driverversion=3.8.0-31-generic firmware=0.29 ip=10.0.0.8 link=yes multicast=yes wireless=IEEE 802.11bgn Also, when I go to additional drivers in the software and updates settings, no proprietary drivers show up. I've tried sudo apt-get install b43-fwcutter firmware-b43-installer because it worked on a bunch of old Dell laptops that I converted over before, but it didn't work on this one. Is this driver even compatible with wifi? Please help.

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  • MySQL at Mobile World Congress (on Valentine's Day...)

    - by mat.keep(at)oracle.com
    It is that time of year again when the mobile communications industry converges on Barcelona for what many regard as the premier telecommunications show of the year.Starting on February 14th, what better way for a Brit like me to spend Valentines Day with 50,000 mobile industry leaders (my wife doesn't tend to read this blog, so I'm reasonably safe with that statement).As ever, Oracle has an extensive presence at the show, and part of that presence this year includes MySQL.We will be running a live demonstration of the MySQL Cluster database on Booth 7C18 in the App Planet.The demonstration will show how the MySQL Cluster Connector for Java is implemented to provide native connectivity to the carrier grade MySQL Cluster database from Java ME clients via Java SE virtual machines and Java EE servers.  The demonstration will show how end-to-end Java services remain continuously available during both catastrophic failures and scheduled maintenance activities.The MySQL Cluster Connector for Java provides both a native Java API and JPA plug-in that directly maps Java objects to relational tables stored in the MySQL Cluster database, without the overhead and complexity of having to transform objects to JDBC, and then SQL  The result is 10x higher throughput, and a simpler development model for Java engineers.Stop by the stand for a demonstration, and an opportunity to speak with the MySQL telecoms team who will share experiences on how MySQL is being used to bring the innovation of the web to the carrier network.Of course, if you can't make it to Barcelona, you can still learn more about the MySQL Cluster Connector for Java from this whitepaper and are free to download it as part of MySQL Cluster Community Edition  Let us know via the comments if you have Java applications that you think will benefit from the MySQL Cluster Connector for JavaI can't promise that Valentines Day at MWC will be the time you fall in love with MySQL Cluster...but I'm confident you will at least develop a healthy respect for it  

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  • How to implement RLE into a tilemap?

    - by Smallbro
    Currently I've been using a 3D array for my tiles in a 2D world but the 3D side comes in when moving down into caves and whatnot. Now this is not memory efficient and I switched over to a 2D array and can now have much larger maps. The only issue I'm having now is that it seems that my tiles cannot occupy the same space as a tile on the same z level. My current structure means that each block has its own z variable. This is what it used to look like: map.blockData[x][y][z] = new Block(); however now it works like this map.blockData[x][y] = new Block(z); I'm not sure why but if I decide to use the same space on say the floor below it wont allow me to. Does anyone have any ideas on how I can add a z-axis to my 2D array? I'm using java but I reckon the concept carries across different languages. Edit: As Will posted, RLE sounds like the best method for achieving a fast 3D array. However I'm struggling to understand how I would even start to implement it? Would I create a 4D array the 4th being something which controls how many to skip? Or would the x-axis simply change altogether and have large gaps in between - for example [5][y][z] would skip 5 tiles? Is there something really obvious here which I am missing? The number of z levels I'm trying to have is around 66, it would be preferably that I can have up to or more than 1000 in x and y.

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  • Pinterest and Social Commerce: The Social Networking Site Retailers Shouldn’t Ignore

    - by Jeri Kelley
    If you are in the midst of remodeling your home, researching the latest spring fashion trends, or simply trying to figure out what to cook for dinner you’ve probably been on Pinterest, and like me, find it extremely useful for generating new ideas and storing them all in one place. Gone are the days of folding over corners of magazines or bookmarking the URL of a Web page – Pinterest makes it easy for you to “pin” ideas, photos, links, and more to virtual bulletin boards where your “followers” can repin, like, and share. As a consumer, Pinterest has gained my attention and I’m definitely not the only one. According to a Monetate infographic, Pinterest’s unique visitors increased 329% from September to December 2011. With this explosion of users, what does it mean for social commerce? Also according to Monetate, Pinterest is one of the top traffic drivers for retailers – driving even more traffic than popular social networking sites like Google+.  For businesses, creating a presence on Pinterest is a great way to extend the reach of your brand, increase inbound links, and drive more traffic to your site. Socialnomics has a great post on how some of the biggest retail brands are using Pinterest to connect with consumers, offer cool content, and engage on a more personal level. When evaluating your social commerce program, while Facebook still delivers the most referrals, Pinterest shouldn’t be ignored as a way to help reach and connect with as many consumers as possible.

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  • CodePlex Daily Summary for Friday, March 05, 2010

    CodePlex Daily Summary for Friday, March 05, 2010New Projects.svn Folders Cleanup Tool: dotSVN Cleanup is a tool that allows you to remove the .svn folders . Just click, browse, say abracadabra ...and the magic is done. Have fun with...Accord: The Accord framework creates an easy we to integrate any Dependency Injection framework into your project, while abstracting the details of your im...Asp.net MVC Lab: Try asp.net mvc outASP.NET Themes management with Webforms: The provided source is an example for how to use themes in ASP.NET Webforms. this source is the "up to date" support for the article I wroteB&W Port Scanner: B&W Port Scanner (formerly Net Inspector) is a fast TCP Port scan utility. The main idea is support of customizable operations to be performed f...BizTalk SWAT - Simple Web Activity Tracker: This is a web based version of BizTalk HAT. The concept is designed to be able to share and enable sharing of orchestration info easily. Some of th...C# Linear Hash Table: A C# dictionary-like implementation of a linear hash table. It is more memory efficiant than the .NET dictionary, and also almost as fast. NOTE: On...DBF Import Export Wizard: DBF Import Export Wizard is a tool for anyone needing to import DBF files into SQL Server or to export SQL Server tables to a DBF file. This proje...Domain as XML - Driven Development: Visual Studio Code Samples: Domain as XML - Driven Development: Visual Studio Code SamplesEasyDownload: This application allows to manage downloads handling an stack of files and several useful configurationsEos2: .FlightTickets: This application allows to buy flight ticketsFotofly PhotoViewer: A Silverlight control that uses the Fotofly metadata library to show the people in a photo (using Windows Live Photo Gallery People metadata) and a...Fujiy source code: Source code examplesGameSet: This application allows to play games with distributed users.Injectivity (Dependency Injection): Injectivity is a dependency injection framework (written in C#) with a strong focus on the ease of configuration and performance. Having been writt...Inventory: Keep track of inputs, materias and salesLoanTin.Com Source Code: LoanTin.Com - a Social Networking Website as same as Tumblr.com, based on source code of Loantiner Project, allow anyone can share anything to anyo...mysln: my solutions.NumTextBox: TextBox控件重写 之NumTextBox,主要实现的功能是,只允许输入数字,或String,Numeric,Currency,Decimal,Float,Double,Short,Int,Long 修改自:http://www.codeproject.com/KB/edit/num...Quick Performance Monitor: This small utility helps to monitor performance counters without using the full blown perfmon tool from Windows. It supports a number of command li...Runo: Runo ResearchSales: This application allows to manage a hardware storeScrewWiki Form Auth Provider: Enables your ASP.NET site to use Forms Authentication to integrate with your ScrewWiki. User management is performed on a parent site, and cookie i...SDS: Scientific DataSet library and tools: The SDS library makes it easy for .Net developers to read, write and share scalars, vectors, matrices and multidimensional grids which are very com...ShapeSweeper: Minesweeper-like game for the Zune HD. Each hidden object has three properties to discover--location, color, and shape--and all three must be corre...SilverlightExcel: an Excel file viewer in Silverlight 4: SilverlightExcel is a Silverlight application allowing you to open and view Excel files and also create graphs.sPWadmin: pwAdmin is an Web Interface based on JSP that uses the PW-Java API to control an PW-Server.Video Player control in Silverlight: A control for playing video in Silverlight 4 with chapters on timeline control. This player will be easily skinnable and customizable. More Featur...XNA Light Pre Pass Renderer: A demo/sample that shows how to write a light pre pass renderer in XNA.Zimms: Collaboration Site for friends, a code depot, and scratch padNew Releases.svn Folders Cleanup Tool: dotSVN Cleanup Tool: dotSVN Cleanup Tool executableAccord: Alpha: Initial build of the Accord framework.AcPrac: AcPrac Ver 0.1: The first version of AcPrac. It is not fully functional, but rather a version to get the bugs out. Please report all bugs.ASP.NET: ASP.NET Browser Definition Files: This download contains: ASP.NET 4 Browser Definition Files -- You can use the new ASP.NET 4 browser definition files with earlier versions of ASP....B&W Port Scanner: Black`n`White Port Scanner 1.0: B&W Port Scanner 1.0 Final Release Date: 03.03.2010 Black`n`WhiteBizTalk SWAT - Simple Web Activity Tracker: BizTalk SWAT: This is a web based version of BizTalk HAT. The concept is designed to be able to share and enable sharing of orchestration info easily. It uses th...BTP Tools: CSB+CUV+HCSB dict files 2010-03-04: 5. is now missing a space between the Strong’s number and the Count: >CSB Translation: 圣所 7, 至圣所G39+G394 it should be: CSB Translation: 圣所 7, 至圣所G...C# Linear Hash Table: Linear Hash Table: First working version of the Linear Hash Table.Cassiopeia: WinTools 1.0 beta: First ReleaseComposure: Caliburn-44007-trunk-vs2010.net40: This is a very simple conversion of the Caliburn trunk (rev 44007) for use in Visual Studio 2010 RC1 built against .NET40. Because the conversion w...Cover Creator: CoverCreator 1.3.0: English and Polish version. Functionality to add image to the front page. Load / save covers.DBF Import Export Wizard: DBF Import Export Wizard Source Code: Version 0.1.0.3DBF Import Export Wizard: DBF_Import_Export_Wizard Setup 0.1.0.3: Zip file contains Setup.exeESB Toolkit Extensions: Tellago BizTalk ESB 2.0 Toolkit Extensions v0.2: Windows Installer file that installs Library on a BizTalk ESB 2.0 system. This Install automatically configures the esb.config to use the new compo...Fotofly PhotoViewer: Fotofly Photoview v0.1: The first public release. Based on a Silverlight application I have been using for over a year at www.tassography.com. This version uses Fotofly v0...HPC with GPUs applied to CG: Cuda Soft Bodies simulation: Cuda src for soft bodiesHPC with GPUs applied to CG: Full Soft Bodies src: full src code for soft bodies simulationInjectivity (Dependency Injection): 2.8.166.2135: Release 2.8.166.2135 of the Injectivity dependency injection framework.Line Counter: 1.5 (Code Outline Preview): This version contains preview of the code outline feature, you can now view C# code outline within Line Counter. Note that the code outline now onl...Micajah Mindtouch Deki Wiki Copier: MicajahWikiCopier: You should use the following line arguments: WikiCopier.exe "http://oldwikiwithdata.wik.is/@api/deki" "login" "password" "http://newwiki.somename.l...ncontrols: Alpha 0.4.0.1: Added some example on the Console Project.NumTextBox: NumTextBox初始版本: TextBox控件重写 之NumTextBox,主要实现的功能是,只允许输入数字,或String,Numeric,Currency,Decimal,Float,Double,Short,Int,Long 此为初始版本PSCodeplex: PS CodePlex 0.2: PS CodePlex 0.2 has some breaking changes to the parameters. A few of the parameters are renamed and a few are made as switch parameters. Add-Rele...Quick Performance Monitor: QPerfMon First release - Version 1.0.0: The first release of the utility.RapidWebDev - .NET Enterprise Software Development Infrastructure: ProductManagement Quick Sample 0.2: This is a sample product management application to demonstrate how to develop enterprise software in RapidWebDev. The glossary of the system are ro...ScrewWiki Form Auth Provider: ScrewWiki Forms Authentication: Initial ReleaseSee.Sharper: See.Sharper.Docs-1.10.3.4: HTML documentation (including Doxygen project)See.Sharper: See.Sharper-1.10.3.4: Solution (Source files, debug and release binaries)Solar.Generic: Solar.Generic 0.8.0.0 Beta (Revised, Renamed): Solar.Generic 0.8.0.0 (Revised & Renamed) Renamed project from Solar.Commons to Solar.Generic. Project solution file is now in format of Visual ...Solar.Security: Solar.Security 1.1.0.0: Performed several major refactorings of code base. Stripped In-Memory implementation of IConfiguration interface of transactional behavior due to...sPWadmin: pwAdmin v0.7: -Star System Simulator: Star System Simulator 2.3: Changes in this release: Fixed several localisation issues. Features in this release: Model star systems in 3D. Euler-Cromer method. Improved...SysI: sysi, stable and ready: This time for sure.TheWhiteAmbit: TheWhiteAmbit - Demo: Two little demos demonstrating: - fast realtime raytracing - generating bent normals for shading (CUDA capable GPU needed = nVidia GeForce >8x00)VsTortoise - a TortoiseSVN add-in for Microsoft Visual Studio: VsTortoise Build 22 Beta: Build 22 (beta) New: Visual Studio 2010 RC support (VsTortoise for Visual Studio 2010 RC screenshots) New: VsTortoise integrates in to Solution E...WinMergeFS: WinMergeFS 0.1.42128alpha: WinMergeFS provides AuFS functionality for windows. With WinMergeFS users can mount multiple directories into a virtual drive. Plugin based root se...WSDLGenerator: WSDLGenerator 0.0.0.2: - Bugs fixed - Code refactored - Added support for custom typesXNA Light Pre Pass Renderer: LightPrePassRendererXNA: Zipped source code for the light pre pass renderer made with XNA.Most Popular ProjectsMetaSharpRawrWBFS ManagerAJAX Control ToolkitMicrosoft SQL Server Product Samples: DatabaseSilverlight ToolkitWindows Presentation Foundation (WPF)LiveUpload to FacebookASP.NETMicrosoft SQL Server Community & SamplesMost Active ProjectsUmbraco CMSRawrBlogEngine.NETSDS: Scientific DataSet library and toolsMapWindow GISpatterns & practices – Enterprise LibraryjQuery Library for SharePoint Web ServicesIonics Isapi Rewrite FilterMDT Web FrontEndDiffPlex - a .NET Diff Generator

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  • ASP.NET MVC ‘Extendable-hooks’ – ControllerActionInvoker class

    - by nmarun
    There’s a class ControllerActionInvoker in ASP.NET MVC. This can be used as one of an hook-points to allow customization of your application. Watching Brad Wilsons’ Advanced MP3 from MVC Conf inspired me to write about this class. What MSDN says: “Represents a class that is responsible for invoking the action methods of a controller.” Well if MSDN says it, I think I can instill a fair amount of confidence into what the class does. But just to get to the details, I also looked into the source code for MVC. Seems like the base class Controller is where an IActionInvoker is initialized: 1: protected virtual IActionInvoker CreateActionInvoker() { 2: return new ControllerActionInvoker(); 3: } In the ControllerActionInvoker (the O-O-B behavior), there are different ‘versions’ of InvokeActionMethod() method that actually call the action method in question and return an instance of type ActionResult. 1: protected virtual ActionResult InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary<string, object> parameters) { 2: object returnValue = actionDescriptor.Execute(controllerContext, parameters); 3: ActionResult result = CreateActionResult(controllerContext, actionDescriptor, returnValue); 4: return result; 5: } I guess that’s enough on the ‘behind-the-screens’ of this class. Let’s see how we can use this class to hook-up extensions. Say I have a requirement that the user should be able to get different renderings of the same output, like html, xml, json, csv and so on. The user will type-in the output format in the url and should the get result accordingly. For example: http://site.com/RenderAs/ – renders the default way (the razor view) http://site.com/RenderAs/xml http://site.com/RenderAs/csv … and so on where RenderAs is my controller. There are many ways of doing this and I’m using a custom ControllerActionInvoker class (even though this might not be the best way to accomplish this). For this, my one and only route in the Global.asax.cs is: 1: routes.MapRoute("RenderAsRoute", "RenderAs/{outputType}", 2: new {controller = "RenderAs", action = "Index", outputType = ""}); Here the controller name is ‘RenderAsController’ and the action that’ll get called (always) is the Index action. The outputType parameter will map to the type of output requested by the user (xml, csv…). I intend to display a list of food items for this example. 1: public class Item 2: { 3: public int Id { get; set; } 4: public string Name { get; set; } 5: public Cuisine Cuisine { get; set; } 6: } 7:  8: public class Cuisine 9: { 10: public int CuisineId { get; set; } 11: public string Name { get; set; } 12: } Coming to my ‘RenderAsController’ class. I generate an IList<Item> to represent my model. 1: private static IList<Item> GetItems() 2: { 3: Cuisine cuisine = new Cuisine { CuisineId = 1, Name = "Italian" }; 4: Item item = new Item { Id = 1, Name = "Lasagna", Cuisine = cuisine }; 5: IList<Item> items = new List<Item> { item }; 6: item = new Item {Id = 2, Name = "Pasta", Cuisine = cuisine}; 7: items.Add(item); 8: //... 9: return items; 10: } My action method looks like 1: public IList<Item> Index(string outputType) 2: { 3: return GetItems(); 4: } There are two things that stand out in this action method. The first and the most obvious one being that the return type is not of type ActionResult (or one of its derivatives). Instead I’m passing the type of the model itself (IList<Item> in this case). We’ll convert this to some type of an ActionResult in our custom controller action invoker class later. The second thing (a little subtle) is that I’m not doing anything with the outputType value that is passed on to this action method. This value will be in the RouteData dictionary and we’ll use this in our custom invoker class as well. It’s time to hook up our invoker class. First, I’ll override the Initialize() method of my RenderAsController class. 1: protected override void Initialize(RequestContext requestContext) 2: { 3: base.Initialize(requestContext); 4: string outputType = string.Empty; 5:  6: // read the outputType from the RouteData dictionary 7: if (requestContext.RouteData.Values["outputType"] != null) 8: { 9: outputType = requestContext.RouteData.Values["outputType"].ToString(); 10: } 11:  12: // my custom invoker class 13: ActionInvoker = new ContentRendererActionInvoker(outputType); 14: } Coming to the main part of the discussion – the ContentRendererActionInvoker class: 1: public class ContentRendererActionInvoker : ControllerActionInvoker 2: { 3: private readonly string _outputType; 4:  5: public ContentRendererActionInvoker(string outputType) 6: { 7: _outputType = outputType.ToLower(); 8: } 9: //... 10: } So the outputType value that was read from the RouteData, which was passed in from the url, is being set here in  a private field. Moving to the crux of this article, I now override the CreateActionResult method. 1: protected override ActionResult CreateActionResult(ControllerContext controllerContext, ActionDescriptor actionDescriptor, object actionReturnValue) 2: { 3: if (actionReturnValue == null) 4: return new EmptyResult(); 5:  6: ActionResult result = actionReturnValue as ActionResult; 7: if (result != null) 8: return result; 9:  10: // This is where the magic happens 11: // Depending on the value in the _outputType field, 12: // return an appropriate ActionResult 13: switch (_outputType) 14: { 15: case "json": 16: { 17: JavaScriptSerializer serializer = new JavaScriptSerializer(); 18: string json = serializer.Serialize(actionReturnValue); 19: return new ContentResult { Content = json, ContentType = "application/json" }; 20: } 21: case "xml": 22: { 23: XmlSerializer serializer = new XmlSerializer(actionReturnValue.GetType()); 24: using (StringWriter writer = new StringWriter()) 25: { 26: serializer.Serialize(writer, actionReturnValue); 27: return new ContentResult { Content = writer.ToString(), ContentType = "text/xml" }; 28: } 29: } 30: case "csv": 31: controllerContext.HttpContext.Response.AddHeader("Content-Disposition", "attachment; filename=items.csv"); 32: return new ContentResult 33: { 34: Content = ToCsv(actionReturnValue as IList<Item>), 35: ContentType = "application/ms-excel" 36: }; 37: case "pdf": 38: string filePath = controllerContext.HttpContext.Server.MapPath("~/items.pdf"); 39: controllerContext.HttpContext.Response.AddHeader("content-disposition", 40: "attachment; filename=items.pdf"); 41: ToPdf(actionReturnValue as IList<Item>, filePath); 42: return new FileContentResult(StreamFile(filePath), "application/pdf"); 43:  44: default: 45: controllerContext.Controller.ViewData.Model = actionReturnValue; 46: return new ViewResult 47: { 48: TempData = controllerContext.Controller.TempData, 49: ViewData = controllerContext.Controller.ViewData 50: }; 51: } 52: } A big method there! The hook I was talking about kinda above actually is here. This is where different kinds / formats of output get returned based on the output type requested in the url. When the _outputType is not set (string.Empty as set in the Global.asax.cs file), the razor view gets rendered (lines 45-50). This is the default behavior in most MVC applications where-in a view (webform/razor) gets rendered on the browser. As you see here, this gets returned as a ViewResult. But then, for an outputType of json/xml/csv, a ContentResult gets returned, while for pdf, a FileContentResult is returned. Here are how the different kinds of output look like: This is how we can leverage this feature of ASP.NET MVC to developer a better application. I’ve used the iTextSharp library to convert to a pdf format. Mike gives quite a bit of detail regarding this library here. You can download the sample code here. (You’ll get an option to download once you open the link). Verdict: Hot chocolate: $3; Reebok shoes: $50; Your first car: $3000; Being able to extend a web application: Priceless.

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  • I'm Not Bi-Polar, I'm Bi-Winning

    - by David Dorf
    On March 1st, Charlie Sheen joined Twitter and was able to amass 1M followers in 25 hours and 17 minutes, setting an official world record.  So why does it take your brand so long to collect followers?  Easy: you're brand isn't a train wreck.Wouldn't it be great if your customers we chatting about your products as much as they're talking about Charlie #winning?  There are a couple things retailers can do.  First, you can offer check-ins to your customers, which can occasionally get a "ooh, what are you buying there?" in the social network. Another methods is to allow customer to "like" particular products on your Web site.  Companies like Wet Seal excel at that.We've been experimenting with automatic posting from the POS, assuming a customer has opted-in.  When you buy something in a store, the POS can automatically post "Dave just bought something at Wet Seal" to Facebook, Twitter, and Foursquare simultaneously.  We stopped short of mentioning the specific product so we don't pull a Beacon.  The idea is the same: get the conversation started.  Give customers a virtual water-cooler where they can discuss products and influence buying decisions.The guys over at ShopSocially have done something very similar.  On the Facebook page for Cafe Press, customers can claim purchases, effectively bragging on their walls.  Each posting goes through the Facebook newsfeed and gets friends interested.  They are seeing over 1,000 purchases being shared daily, and that's generating over 300,000 brand impressions.Sounds like a winning idea.

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  • SQL SERVER – Identify Most Resource Intensive Queries – SQL in Sixty Seconds #028 – Video

    - by pinaldave
    During performance tuning conversation the very first question people often ask is what are the queries offending the server or in another word let us identify the queries which are the most resource intensive. The resources are often described as either Memory, CPU or IO. When we talk about the queries the same is applicable for them as well. The query which is doing lots of reads or writes are for sure resource intensive as well query which are taking maximum CPU time. Performance tuning is a very deep subject and we all have our own preference regarding what should be the first step to tuning and what should be looked with the salt of grain. Though there is no denying that a query which uses more resources than what it should be using for sure require tuning. There are many ways to do identify query using intense resources (e.g. Extended events etc) but in this one we will go by simple DMV. There is a small gotcha we all have to remember about usage of DMV is that it only brings back results from existing cache. So if you have a query which is very resource intensive but is not cached or if you have explicitly removed the query from the cache it will be not part of the result returned by this DMV. It is quite possible that a query is aged and removed from the cache if your cache is not huge. If your cache is large you may want to be careful in running this query during business hours as this query itself can be resource intensive. Get Script to identify resource intensive query from Here Related Tips in SQL in Sixty Seconds: SQL SERVER – Find Most Expensive Queries Using DMV Simple Example to Configure Resource Governor – Introduction to Resource Governor SQL SERVER – DMV – sys.dm_exec_query_optimizer_info – Statistics of Optimizer SQL SERVER – Wait Stats – Wait Types – Wait Queues – Day 0 of 28 Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Database, Pinal Dave, PostADay, SQL, SQL Authority, SQL in Sixty Seconds, SQL Query, SQL Scripts, SQL Server, SQL Server Management Studio, SQL Tips and Tricks, T SQL, Technology, Video Tagged: Excel

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  • Shared Development Space

    - by PatrickWalker
    Currently the company I work in gives each developer their own development virtual machine. On this machine (Windows 7) they install the entire stack of the product (minus database) this stack is normally spread amongst multiple machines of differing OS (although moving towards windows 2008 and 2008r2) So when a developer has a new project they are likely to be updating only a small piece of their stack and as such the rest of it can become out of date with the latest production code. The isolation from others means some issues won't be found until the code goes into shared test environments/production. I'm suggesting a move from functional testing on these isolated machines to plugging machines into a shared environment. The goal being to move towards a deployment thats closer to production in mechanism and server type. Developers would still make code changes on their Win7 vm and run unit/component testing locally but for functionally testing they would leverage a shared enviornment. Does anyone else use a shared development environment like this? Are there many reasons against this sort of sandbox environment? The biggest drawback is a move away from only checking in code when you've done local functional testing to checking in after static testing. I'm hoping an intelligent git branching strategy can take care of this for us.

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  • TDE Tablespace Encryption 11.2.0.1 Certified with EBS 12

    - by Steven Chan
    Oracle Advanced Security is an optional licenced Oracle 11g Database add-on.  Oracle Advanced Security Transparent Data Encryption (TDE) offers two different features:  column encryption and tablespace encryption.  11.2.0.1 TDE Column encryption was certified with E-Business Suite 12 as part of our overall 11.2.0.1 database certification.  As of today, 11.2.0.1 TDE Tablespace encryption is now certified with Oracle E-Business Suite Release 12. What is Transparent Data Encryption (TDE) ? Oracle Advanced Security Transparent Data Encryption (TDE) allows you to protect data at rest. TDE helps address privacy and PCI requirements by encrypting personally identifiable information (PII) such as Social Security numbers and credit card numbers. TDE is completely transparent to existing applications with no triggers, views or other application changes required. Data is transparently encrypted when written to disk and transparently decrypted after an application user has successfully authenticated and passed all authorization checks. Authorization checks include verifying the user has the necessary select and update privileges on the application table and checking Database Vault, Label Security and Virtual Private Database enforcement policies.

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  • First round playing with Memcached

    - by Shaun
    To be honest I have not been very interested in the caching before I’m going to a project which would be using the multi-site deployment and high connection and concurrency and very sensitive to the user experience. That means we must cache the output data for better performance. After looked for the Internet I finally focused on the Memcached. What’s the Memcached? I think the description on its main site gives us a very good and simple explanation. Free & open source, high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load. Memcached is an in-memory key-value store for small chunks of arbitrary data (strings, objects) from results of database calls, API calls, or page rendering. Memcached is simple yet powerful. Its simple design promotes quick deployment, ease of development, and solves many problems facing large data caches. Its API is available for most popular languages. The original Memcached was built on *nix system are is being widely used in the PHP world. Although it’s not a problem to use the Memcached installed on *nix system there are some windows version available fortunately. Since we are WISC (Windows – IIS – SQL Server – C#, which on the opposite of LAMP) it would be much easier for us to use the Memcached on Windows rather than *nix. I’m using the Memcached Win X64 version provided by NorthScale. There are also the x86 version and other operation system version.   Install Memcached Unpack the Memcached file to a folder on the machine you want it to be installed, we can see that there are only 3 files and the main file should be the “memcached.exe”. Memcached would be run on the server as a service. To install the service just open a command windows and navigate to the folder which contains the “memcached.exe”, let’s say “C:\Memcached\”, and then type “memcached.exe -d install”. If you are using Windows Vista and Windows 7 system please be execute the command through the administrator role. Right-click the command item in the start menu and use “Run as Administrator”, otherwise the Memcached would not be able to be installed successfully. Once installed successful we can type “memcached.exe -d start” to launch the service. Now it’s ready to be used. The default port of Memcached is 11211 but you can change it through the command argument. You can find the help by typing “memcached -h”.   Using Memcached Memcahed has many good and ready-to-use providers for vary program language. After compared and reviewed I chose the Memcached Providers. It’s built based on another 3rd party Memcached client named enyim.com Memcached Client. The Memcached Providers is very simple to set/get the cached objects through the Memcached servers and easy to be configured through the application configuration file (aka web.config and app.config). Let’s create a console application for the demonstration and add the 3 DLL files from the package of the Memcached Providers to the project reference. Then we need to add the configuration for the Memcached server. Create an App.config file and firstly add the section on top of it. Here we need three sections: the section for Memcached Providers, for enyim.com Memcached client and the log4net. 1: <configSections> 2: <section name="cacheProvider" 3: type="MemcachedProviders.Cache.CacheProviderSection, MemcachedProviders" 4: allowDefinition="MachineToApplication" 5: restartOnExternalChanges="true"/> 6: <sectionGroup name="enyim.com"> 7: <section name="memcached" 8: type="Enyim.Caching.Configuration.MemcachedClientSection, Enyim.Caching"/> 9: </sectionGroup> 10: <section name="log4net" 11: type="log4net.Config.Log4NetConfigurationSectionHandler,log4net"/> 12: </configSections> Then we will add the configuration for 3 of them in the App.config file. The Memcached server information would be defined under the enyim.com section since it will be responsible for connect to the Memcached server. Assuming I installed the Memcached on two servers with the default port, the configuration would be like this. 1: <enyim.com> 2: <memcached> 3: <servers> 4: <!-- put your own server(s) here--> 5: <add address="192.168.0.149" port="11211"/> 6: <add address="10.10.20.67" port="11211"/> 7: </servers> 8: <socketPool minPoolSize="10" maxPoolSize="100" connectionTimeout="00:00:10" deadTimeout="00:02:00"/> 9: </memcached> 10: </enyim.com> Memcached supports the multi-deployment which means you can install the Memcached on the servers as many as you need. The protocol of the Memcached responsible for routing the cached objects into the proper server. So it’s very easy to scale-out your system by Memcached. And then define the Memcached Providers configuration. The defaultExpireTime indicates how long the objected cached in the Memcached would be expired, the default value is 2000 ms. 1: <cacheProvider defaultProvider="MemcachedCacheProvider"> 2: <providers> 3: <add name="MemcachedCacheProvider" 4: type="MemcachedProviders.Cache.MemcachedCacheProvider, MemcachedProviders" 5: keySuffix="_MySuffix_" 6: defaultExpireTime="2000"/> 7: </providers> 8: </cacheProvider> The last configuration would be the log4net. 1: <log4net> 2: <!-- Define some output appenders --> 3: <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender"> 4: <layout type="log4net.Layout.PatternLayout"> 5: <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline"/> 6: </layout> 7: </appender> 8: <!--<threshold value="OFF" />--> 9: <!-- Setup the root category, add the appenders and set the default priority --> 10: <root> 11: <priority value="WARN"/> 12: <appender-ref ref="ConsoleAppender"> 13: <filter type="log4net.Filter.LevelRangeFilter"> 14: <levelMin value="WARN"/> 15: <levelMax value="FATAL"/> 16: </filter> 17: </appender-ref> 18: </root> 19: </log4net>   Get, Set and Remove the Cached Objects Once we finished the configuration it would be very simple to consume the Memcached servers. The Memcached Providers gives us a static class named DistCache that can be used to operate the Memcached servers. Get<T>: Retrieve the cached object from the Memcached servers. If failed it will return null or the default value. Add: Add an object with a unique key into the Memcached servers. Assuming that we have an operation that retrieve the email from the name which is time consuming. This is the operation that should be cached. The method would be like this. I utilized Thread.Sleep to simulate the long-time operation. 1: static string GetEmailByNameSlowly(string name) 2: { 3: Thread.Sleep(2000); 4: return name + "@ethos.com.cn"; 5: } Then in the real retrieving method we will firstly check whether the name, email information had been searched previously and cached. If yes we will just return them from the Memcached, otherwise we will invoke the slowly method to retrieve it and then cached. 1: static string GetEmailByName(string name) 2: { 3: var email = DistCache.Get<string>(name); 4: if (string.IsNullOrEmpty(email)) 5: { 6: Console.WriteLine("==> The name/email not be in memcached so need slow loading. (name = {0})==>", name); 7: email = GetEmailByNameSlowly(name); 8: DistCache.Add(name, email); 9: } 10: else 11: { 12: Console.WriteLine("==> The name/email had been in memcached. (name = {0})==>", name); 13: } 14: return email; 15: } Finally let’s finished the calling method and execute. 1: static void Main(string[] args) 2: { 3: var name = string.Empty; 4: while (name != "q") 5: { 6: Console.Write("==> Please enter the name to find the email: "); 7: name = Console.ReadLine(); 8:  9: var email = GetEmailByName(name); 10: Console.WriteLine("==> The email of {0} is {1}.", name, email); 11: } 12: } The first time I entered “ziyanxu” it takes about 2 seconds to get the email since there’s nothing cached. But the next time I entered “ziyanxu” it returned very quickly from the Memcached.   Summary In this post I explained a bit on why we need cache, what’s Memcached and how to use it through the C# application. The example is fairly simple but hopefully demonstrated on how to use it. Memcached is very easy and simple to be used since it gives you the full opportunity to consider what, when and how to cache the objects. And when using Memcached you don’t need to consider the cache servers. The Memcached would be like a huge object pool in front of you. The next step I’m thinking now are: What kind of data should be cached? And how to determined the key? How to implement the cache as a layer on top of the business layer so that the application will not notice that the cache is there. How to implement the cache by AOP so that the business logic no need to consider the cache. I will investigate on them in the future and will share my thoughts and results.   Hope this helps, Shaun All documents and related graphics, codes are provided "AS IS" without warranty of any kind. Copyright © Shaun Ziyan Xu. This work is licensed under the Creative Commons License.

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  • push email / email server tutorial

    - by David A
    Does anyone happen to know the current status of push email in the linux world? From my searching at the moment I have seen Z-push http://www.ifusio.com/blog/setup-your-own-push-mail-server-with-z-push-on-debian-linux and https://peterkieser.com/2011/03/25/androids-k-9-mail-battery-life-and-dovecots-push-imap/ Are there other solutions? Does anyone have any experiences with these? They're somewhat different in that Z-push seems to work in conjunction with an existing imap server? Some time ago I did manage to compile and build Dovecot 2 (since only Dovecot 1 was available in the Ubuntu repos at the time), it would have been a real fluke because I had no idea what I was doing but it seemed to work well with my mobile phone, that said, I can't say for sure that it was pushing, but it seemed like it. Anyway, I'm here again and looking to set up a mail server. I'm hoping to do a better of a job this time around with virtual users and such. Without installing ispconfig3 (or something similar), does anyone have any recent email server tutorials (that cover all aspects MTA, MDA...) that can supply push email on a Ubuntu 12.04 server? (I'm probably of slightly above newb status, but not far) Thanks a bunch

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  • Trade-offs of local vs remote development workflows for a web development team

    - by lamp_scaler
    We currently have SVN setup on a remote development server. Developers SSH into the server and develops on their sandbox environment on the server. Each one has a virtual host pointed to their sandbox so they can preview their changes via the web browser by connecting to developer-sandbox1.domain.com. This has worked well so far because the team is small and everyone uses computers with varying specs and OSs. I've heard some web shops are using a workflow that has the developers work off of a VM on their local machine and then finally push changes to the remote server that hosts SVN. The downside to this is that everyone will need to make sure their machine is powerful enough to run both the VM and all their development tools. This would also mean creating images that mirror the server environment (we use CentOS) and have them install it into their VMs. And this would mean creating new images every time there is an update to the server environment. What are some other trade-offs? Ultimately, why did you choose one workflow over the other?

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  • Creating block devices for openstack deployment using MAAS and juju (nova-volume deployment)

    - by Tom Van Hoof
    Hi, I'm currently trying to get a openstack deployment working by using MAAS with 9 nodes and juju. To do this I found this guide, working with ubuntu 12.04 LTS https://help.ubuntu.com/community/UbuntuCloudInfrastructure and followed it as good as I can. After a vigorous amount of trial and error I finally got to the point where I'm supposed to deploy nova-volume using the "custom" config file. However when my node is started and shows up as running in the "juju status" report the service reports the installation failed. I'm trying to install with juju jitsu by the way. I think it has something to do with the following statement in the openstack.cfg file : nova-volume: # This must be a free block device that is writable on the nova-volume host. block-device: "xvdb" overwrite: "true" I did some research and found that (at least I think) this refers to a Xen Virtual Drive/device, and because the device is not present on the node it's being deployed to, the installation fails. What I don't understand is how I am supposed to have such a block device available on a machine which was completely managed by MAAS. Does anyone here have any experience with this and knows of a way to solve this, or am I missing something big here. Some kind of missing link between the MAAS and a separate XEN host ? My MAAS server is ubuntu 12.04LTS Server. All help is welcome. Kind regards, Tom

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  • Super Computer Built from Raspberry Pi Boards and LEGO Bricks

    - by Jason Fitzpatrick
    It was only a matter of time before someone chained together dozens of Raspberry Pi boards into a serviceable super computer; read on to see how a team of Southampton scientists built a 64-core machine using them. Image courtesy of Simon Cox and the University of Southampton. From the University of South Hampton press release: Professor Cox comments: “As soon as we were able to source sufficient Raspberry Pi computers we wanted to see if it was possible to link them together into a supercomputer. We installed and built all of the necessary software on the Pi starting from a standard Debian Wheezy system image and we have published a guide so you can build your own supercomputer.” The racking was built using Lego with a design developed by Simon and James, who has also been testing the Raspberry Pi by programming it using free computer programming software Python and Scratch over the summer. The machine, named “Iridis-Pi” after the University’s Iridis supercomputer, runs off a single 13 Amp mains socket and uses MPI (Message Passing Interface) to communicate between nodes using Ethernet. The whole system cost under £2,500 (excluding switches) and has a total of 64 processors and 1Tb of memory (16Gb SD cards for each Raspberry Pi). Professor Cox uses the free plug-in ‘Python Tools for Visual Studio’ to develop code for the Raspberry Pi. How to Get Pro Features in Windows Home Versions with Third Party Tools HTG Explains: Is ReadyBoost Worth Using? HTG Explains: What The Windows Event Viewer Is and How You Can Use It

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  • SQL SERVER – What is Page Life Expectancy (PLE) Counter

    - by pinaldave
    During performance tuning consultation there are plenty of counters and values, I often come across. Today we will quickly talk about Page Life Expectancy counter, which is commonly known as PLE as well. You can find the value of the PLE by running following query. SELECT [object_name], [counter_name], [cntr_value] FROM sys.dm_os_performance_counters WHERE [object_name] LIKE '%Manager%' AND [counter_name] = 'Page life expectancy' The recommended value of the PLE counter is 300 seconds. I have seen on busy system this value to be as low as even 45 seconds and on unused system as high as 1250 seconds. Page Life Expectancy is number of seconds a page will stay in the buffer pool without references. In simple words, if your page stays longer in the buffer pool (area of the memory cache) your PLE is higher, leading to higher performance as every time request comes there are chances it may find its data in the cache itself instead of going to hard drive to read the data. Now check your system and post back what is this counter value for you during various time of the day. Is this counter any way relates to performance issues for your system? Note: There are various other counters which are important to discuss during the performance tuning and this counter is not everything. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, SQL, SQL Authority, SQL Optimization, SQL Performance, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, SQLServer, T SQL, Technology

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  • Podcast Show Notes: Evolving Enterprise Architecture

    - by Bob Rhubart
    The latest series of ArchBeat podcast programs grew out of another virtual meet-up, held on March 11. As with previous meet-ups, I sent out a general invitation to the roster of previous ArchBeat panelists to join me on Skype to talk about whatever topic comes up. For this event, Oracle ACE Directors Mike van Alst and Jordan Braunstein  showed up, along with Oracle product manager Jeff Davies.  The result was an impressive and wide-ranging discussion on the evolution of Enterprise Architecture, the role of technology in EA, the impact of social computing, and challenge of having three generations of IT people at work in the enterprise – each with different perspectives on technology. Mike, Jordan, and Jeff talked for more than an hour, and the conversation was so good that slicing and dicing it to meet the time constraints for these podcasts has been a challenge. The first two segments of the conversation are now available. Listen to Part 1 Listen to Part 2 Part 3 will go live next week, and an unprecedented fourth segment will follow. These guys have strong opinions, and while there is common ground, they don’t always agree. But isn’t that what a community is all about? I suspect that you’ll have questions and comments after listening, so I encourage you to reach out to Mike, Jordan, and Jeff  via the following links: Mike van Alst Blog | Twitter | LinkedIn | Business |Oracle Mix | Oracle ACE Profile Jordan Braunstein Blog | Twitter | LinkedIn | Business | Oracle Mix | Oracle ACE Profile Jeff Davies Homepage | Blog | LinkedIn | Oracle Mix (Also check out Jeff’s book: The Definitive Guide to SOA: Oracle Service Bus)   Coming Soon ArchBeat’s microphones were there for the panel discussions at the recent Oracle Technology Network Architect Days in Dallas and Anaheim. Excerpts from those conversations will be available soon. Stay tuned: RSS Technorati Tags: oracle,otn,enterprise architecture,podcast. arch2arch,archbeat del.icio.us Tags: oracle,otn,enterprise architecture,podcast. arch2arch,archbeat

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