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  • How can I simulate a slow machine in a VM?

    - by Nathan Long
    I'm testing an AJAX-heavy web-application. I develop on a new Mac, but I use VmWare Fusion (currently 3.1.2) to test in Windows XP, using IETester to simulate older versions of IE. This lets me see how older IE versions would render the site, but I'd also like to see how the site would perform on an older machine. I see in the VM's settings that I can decrease the RAM; is there a way to also dial down the processor speed? How else might I simulate a slow machine? (I am also going to check out how to simulate a slow internet connection.)

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  • Using PCIe and onboard together

    - by dave
    I'm currently using my PCI Express card to run 2 monitors and my onboard to run another. It works fine despite people saying it won't. I use a gadget to monitor my PCI card but would also like to monitor my onboard GPU as well. I play a game called Eve Online and when I'm running my accts I can only get 20 fps. Before, when I was using just my PCI card, I was getting 60+. To solve this, I set the display options to interval immediate, it was set to one before. My computer handles it no problem at all, but I was always told this was immpossible. I was hoping someone could explain how and why this is working. Thanks! My setup is: i7 2600k 16 GB RAM XFX HD6970 2GB

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  • Problems with blocking reads using libudev on Linux

    - by Steve Hawkins
    We are using the following routine (on Linux, with libudev) to read data from a PIC microcontroller configured as a USB HID device. The data is sent only when a button connected to the PIC microcontroller is pressed or released. The routine is missing messages from the PIC controller, and I suspect that this is because the call to poll below is not behaving as it should. The call to poll will reliably block for 1 second util the first message is read. As soon as the first message is read, the call to poll returns immediately instead of blocking for 1 second (1000 milliseconds) like it should. I have worked around this problem by closing and re-opening the device after each read. This makes poll behave correctly, but I think that closing and re-opening the device may be the reason for the lost messages. bool PicIo::Receive (unsigned char* picData, const size_t picDataSize) { static hiddev_report_info hidReportInfo; static hiddev_usage_ref_multi hidUsageRef; if (-1 == PicDeviceDescriptor()) { return false; } // Determine whether or not there is data available to be read pollfd pollFd; pollFd.fd = PicDeviceDescriptor(); pollFd.events = POLLIN; int dataPending = poll (&pollFd, 1, 1000); if (dataPending <= 0) { return false; } // Initialize the HID Report structure for an input report hidReportInfo.report_type = HID_REPORT_TYPE_INPUT; hidReportInfo.report_id = 0; hidReportInfo.num_fields = 64; if (-1 == ioctl(PicDeviceDescriptor(), HIDIOCGREPORT, &hidReportInfo)) { return false; } // Initizlize the HID Usage Reference for an Input report hidUsageRef.uref.report_type = HID_REPORT_TYPE_INPUT; hidUsageRef.uref.report_id = 0; hidUsageRef.uref.field_index = 0; hidUsageRef.uref.usage_index = 0; hidUsageRef.num_values = 64; if (-1 == ioctl(PicDeviceDescriptor(), HIDIOCGUSAGES, &hidUsageRef)) { return false; } // Transfer bytes from the usage report into the return value. for (size_t idx=0; (idx < 64) && (idx < picDataSize); ++idx) { picData[idx] = hidUsageRef.values[idx]; } return true; } The function PicDeviceDescriptor() does checking on the device to make sure that it is present. Here are the pertinent details of the PicDeviceDescriptor function, showing how the device is begin opened. int PicIo::PicDeviceDescriptor(int command) { struct stat statInfo; static int picDeviceDescriptor = -1; string picDevicePath = "/dev/usb/hiddev0"; if ((-1 != picDeviceDescriptor) && (CLOSE == command)) { close (picDeviceDescriptor); picDeviceDescriptor = -1; } else if ((-1 != picDeviceDescriptor) && (-1 == fstat(picDeviceDescriptor, &statInfo))) { // Handle the case where the PIC device had previously been detected, and // is now disconnected. close (picDeviceDescriptor); picDeviceDescriptor = -1; } else if ((-1 == picDeviceDescriptor) && (m_picDevice.IsConnected())) { // Create the PIC device descriptor if the PIC device is present (i.e. its // device node is present) and if the descriptor does not already exist picDeviceDescriptor = open (picDevicePath.c_str(), O_RDONLY); } return picDeviceDescriptor; } I'm sure that I'm doing something wrong, but I've Googled the issue and cannot seem to find any relevant answers. Any help would be very much appreciated -- Thx.

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  • How to interpret IOZone results?

    - by homer5439
    Here are the resuts of running IOZone on an ext3 filesystem on an LVM volume residing on a SAN LUN (it was ran with 5 parallel processes). "Throughput report Y-axis is type of test X-axis is number of processes" "Record size = 4 Kbytes " "Output is in Kbytes/sec" " Initial write " 81628.55 " Rewrite " 83354.72 " Read " 115595.02 " Re-read " 119306.09 " Reverse Read " 47684.20 " Stride read " 10011.09 " Random read " 16751.27 " Mixed workload " 5659.77 " Random write " 1661.85 " Pwrite " 36030.83 Now this is all nice and dandy, but my question is: how do I know whether the values are as good as they could be or there is something to tweak (and if so, what?) The actual usage I will have for that Logical Volume is to act as virtual disk for a VM.

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  • Have an iPad's viewable area visible on your computer monitor for remote web-meeting training?

    - by MikeN
    I want to demo the usage of my iPad on my computer screen so that I can transmit it to other people during a training session using a web conference tool (like dimdim.com, gotomeeting.com, fuzemeeting.com, etc...) Is there a way to stream an iPad's display to a computer so it would be visible in such a screen casting software? My current ad-hoc solution for this would be to use a webcam to livecast me using a physical (real life) iPad and broadcast that to other users for training. This is undesirable due to the difficulty in really seeing the iPad well. So I'm hoping someone has a way to do: 1) Video output the iPad's display to my computer screen. 2) Emulate an iPad with a installed app (not having the source code) on the screen.

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  • Intel Rapid Start Driver Reinstallation doesn't work?

    - by elegantonyx
    I recently had to reformat my entire drive and reinstall Windows 7. Something that bothers me is that when I was downloading the Intel Rapid Start driver (I have a Lenovo Ideapad Y480, and it comes standard with the Rapid Start) and tried to install it, the installer claimed that my system did not meet the requirements in order to install, when it was previously installed by the OEM. My startup times have increased from 21 seconds to log-in screen to 50 seconds. Please help... Specs: Lenovo Ideapad Y480 Intel Core i7-3610 Ivy Bridge (quad-core) Nvidia Geforce 640M LE with 2gb VRAM 8GB RAM 1TB hard drive, 32 GB SSD (OEM installed)

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  • let mysql use full resources

    - by shekhar
    We have a Windows server 2008 R2. It has 24GB RAM and 2.926 Mhz, 8 Core(s), 8 Logical Process. We have a large MySQL database and it's taking a lot of time to execute some queries. But while running queries, I have observed it's NOT utilizing full resources. I am thinking that if I let MySQL utilize maximum resources on my server, it can reduce execution time. How can I let my MySQL server utilize maximum resources in a healthy way?

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  • cygwin rsync over ssh very slow

    - by Waleed Hamra
    I have 2 machines running Windows Xp SP3. I have cygwin installed on both, version 1.7. I have rsync and ssh installed on both, and configured using default settings as per ssh-host-config and ssh-user-config programs provided. I moved the public keys into their respective locations, and basically ssh is working fine. i began an rsync operation, using: rsync -av --delete --hard-links local_dir username@other_machine:/some_dir well... on both machines, the processor is running near idle, no heavy usage. I checked IO using process explorer on both machines, and that too is at normal levels (1~2 MB/s), so I can't see where the bottlenecks are, because network performance is aweful. I'm not going over 1MB/s... when a normal file copy using windows sharing achieves some ~10 MB/s.. What could be wrong?

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  • buying a computer wondering about the pit falls of haveing a 64 bit OS

    - by biladsf
    _I am getting a custom laptop, i only do .net development, i dont play games or download gbs of video/music. I just want a fast computer. Right now in order to get 8gbs of ram i have to have the 64 bit version of 7. I need to know the following: What pitfalls could i encounter. i know a lot of apps out there are not 64 bit apps and only come in 32 bit version. Business Intelligence Development Studio is a good example. _

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  • Linux Live CD for old computer

    - by Joel Coehoorn
    I have a pentium II (that's right, pentium II) with a scant 200MB of ram. This was a high-end workstation in it's day. The machine currently runs dos on a raid array, and I need to pull some data from it. I figure my best chance at this is to use a linux live cd to copy the data to one of our active directory network shares (there is a network card in the machine). Unfortunately, my linux skills are abysmal, so I'm not sure where to get started: Where should I look to find a linux cd that will run well on such an old system Since I'm likely gonna need to be command-line only, what do I need to do to configure the network card and mount the network share via the command line? Bonus points: exact syntax needed to copy and convert the entire volume for use in VMware server 2.0, but really just copying all the data should be enough.

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  • Hyper-V Guests suddenly stopped working

    - by Anton Gogolev
    Hi! Here's my configuration: Windows Server 2008 R2 Standard as a host OS, and two guests VMs running the same exact OS. Yesterday, Trial Activation on all OSes has expired and quite naturally all machines shut down. I rearmed the host, but cannot log on to either guest VMs. From what I see, they start up normally (State is listed as Running) but CPU Usage seems to be stuck at 3% and when I connect to it all I see is black textmode screen with cursor blinking. One of my VMs has several snapshots, and when I revert back, it starts up normally. Moreover, "reference VM" (the one I cloned these two VMs from) starts up just normally. How can I troubleshoot this issue?

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  • Media center consumes all available memory when attempting to play music off of a server

    - by RCIX
    I have Windows 7 Ultimate, and recently, when i try to play a song off of my Twonky Media Server/Windows Media Connect (based on an HP WHS with an Atom), it plays choppily. When i open Resource Monitor, it shows that after ordering the music to play, memory usage rapidly spikes to consume most, if not all, of the available memory on my system (excluding a couple hundred megabytes in standby). Why does it do this and is there anything i can do to stop it? Edit: it happens when I attempt to browse the server's music, not just when i play music. Edit 2: the "ehshell" process is what consumes the memory, appears to me something specific to media center. Moreover, the ehshell process doesn't die in this case. Edit 3: It only happens when browsing my Twonky library, and not my Windows Media Connect.

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  • Restoring files from blueprint on command

    - by Nick
    I am setting up a server. I already have rented a machine running centOS 6 but I have run into a bit of a technical problem with configuring the server software: The server will have some files that it will try to read/write to them but what I need is a way to have a blueprint of these files and everytime the server restarts the files that it used get deleted and replaced by the blueprints. I have heared of a RAM disks or Virtual File Systems but didnt quite understand how they work or how to set them up. The server software is written in java which means bash commands can be run from it. I cannot modify what happens when the server shuts down entirely what I can do is run a command before the server runs the final shutdown save

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  • Minix3 on Vmware

    Hi, I install minix3 on vmware using installation CD i make using .iso image which is available @minix3 I make 2GB Harddisk, 512MB RAM on VMware, and installed step-by-step. It got installed and working fine. But i wana install 'packman' which is X window system. I'm not able to install it. It asks for installation CD, its still there and its detected also, but i couldn't proceed. Actually i install minix to learn Operating system design and Implementation :) Have any1 tried installing 'packman' i.e X window system on minix3. Please guide me. :)

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  • MS Paint: how to enter proper text?

    - by Peter Mortensen
    How do I enter normal text in Microsoft Paint? Normally I don't have any problems adding text to an image in Paint. But I ran into this problem: The text is supposed to be "abcdefd" (entered in a text editor and pasted). The same characters appear if typed directly. So apparently it is using some other character set. How do I restore normal operation? Platform: MS Paint 5.2, Windows XP Professional x64 SP2, 8 GB RAM.

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  • How do I use memmap to reserve memory on boot?

    - by alexl
    Ive got a laptop with some corrupted ram addresses, so I'm trying to use memmap to reserve them before linux boots up. Ive been trying to use memmap=10M$1024M' as a kernel boot option, but linux crashes (with no errors) and restarts. If I use a different syntax for memmap likememmap=1023M@0M` it boots fine. Do I have to specify a certain size block to reserve or could my kernel version not support reserving memory with memmap? Maybe I'm better off using memmap=exactmap, and if so, could somebody point me to a good faq on how to use it?

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  • Is it better to always purchase as much as higher in Watts SMPS, for PC?

    - by metal gear solid
    Is it better to always purchase as much as higher in Watts SMPS, for PC? Does higer watts SMPS also consume more power (electricity bill)? How to know how much watts of SMPS we should purchase? What are factor who decide how much watt of power will need? I'm going to purchase a new Motherboard + CPU + HDD + RAM + DVD Wrtiter + SATA 500 GB HDD ? I'm not purchasing any external Graphic Card. How to decide which watt of SMPS ,I should purchase?

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  • Upgrading Mac OS X 10.5.8 Corrupted Lightroom 2.7

    - by Tedd
    I use Photoshop CS4 and Lightroom 2. I recntly upgraded to 10.5.8 and began to have issues with LR. So, I reinstalled and downgraded my OS. I'm now running 10.5.2 on my MacBook 2.4G Core Duo with 4G RAM. Everything works fine now, but the downgrade also resulted in having only Safari 3.0.4 and and older version of iTunes. I can't upgrade either of those until I upgrade the OS but I'm reluctant to do so because I might have problems again. Any suggestions? Install 10.6 instead? What kind of issues can I expect from that?

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  • iPad Synching with Exchange 2007 is Losing Contacts

    - by Christopher
    We have a user who has an iPad that is synching to our Exchange 2007 SP1 Server. She is reporting that her contacts are being "eaten", which we take to mean are being slowly deleted over time. This user also has a BlackBerry that is synching through a Blackberry Enterprise Server. I have two questions - 1) Has anyone run into this situation of "self-deleting" contacts or does anyone have any idea what is going on? 2) Can anyone give insight into usage of iPads in their Active Directory/Exchange environment?

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  • Is it safe to run an operating system from an USB flash drive?

    - by Georg
    I've got a laptop that has a broken harddisk controller. Replacing the motherboard is quite expensive. I thought about buying a flash drive and installing & running the system from it. However, I'm concerned about some things. Speed: Are they fast enough for swap memory (I've got only 1GB RAM installed.) I'm considering buying 2 or 3 of them and making them into a RAID. What about limited write cycles? How long will it last for a system that has a filesystem with journaling enabled? I'd hate to abandon it. Are there significant differences between internal SSD which are used in modern laptops like MacBooks and USB flash drives? What should I expect in 10 years when the memory wear starts kicking in?

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  • httpd service keep restarting. after 15-20 mins

    - by niraj
    I have recently purchased Dedicated Server which has 16bg ram and 1TB Harddisk. It has Cpanel and for firewall CSF Installd. I am mainly going to install it for File hosting service. Now the day i moved my httpd service keep restarting every 15-20 mins. It becomes unresponsive after that so have to manually restart it. My httpd settings are Start Servers = 5 Minimum Spare Servers = 5 Maximum Spare Servers = 10 Server Limit = 20000 Max Clients = 10000 Max Requests Per Child = 10000 Keep-Alive = On Keep-Alive Timeout = 5 Max Keep-Alive Requests = Unlimited Timeout 300 TOP is top - 14:53:41 up 1 day, 23:39, 2 users, load average: 0.10, 0.14, 0.09 Tasks: 1563 total, 1 running, 1562 sleeping, 0 stopped, 0 zombie Cpu(s): 0.7%us, 0.6%sy, 0.0%ni, 98.1%id, 0.2%wa, 0.0%hi, 0.5%si, 0.0%st Mem: 16303780k total, 16142048k used, 161732k free, 135264k buffers Swap: 8224760k total, 868k used, 8223892k free, 14136616k cached Please help me in this its keep happning.

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  • Looking for Mini itx capable of running Photoshop + Illustrator (cs4 or higher)

    - by drozzy
    Ok, so I want to build a small pc for my gf that she can take with her instead of the crappy laptop that she has. Overall I think the complete system should not weight more than 10 lbs. The requirements are to run at least 4 applications simultaneously, and be able to switch between them with no problems: Photoshop Illustrator Word editor Browser Should be able to handle 1920x1200 resolution. I am currently looking at LGA775 socket as I can just transfer my desktop cpu Q6600 to it. Currently deciding between DQ45EK and DG41TX, but any other suggestions are welcome. So I am thinking something along the lines of: MINI-BOX M350 Case with 90 watt psu Q6600 cpu (my desktop cpu) 2x2GB kingston ram (or similar) Video? Need external or built-in G45 on DQ45EK will do? My primary concern is whether the 90WATT is sufficient of the Q6600? Thanks

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  • System freezes for 5 seconds when seeking in or skipping to songs and videos

    - by pragmatick
    When I start playing a new video or MP3 or skip to a time when playing them, my system hangs for a couple of seconds. A restart solves this problem, but only for a while. It does not matter which player I use (VLC, Media Player, Winamp, Zoom Player), which media files or if they are located on a network drive or on the local hard drive. Everything else works flawlessly and after the playing has started, there are not problems - until I switch to another file. Additionally, when the Winamp playlist continues to the next song, the system does not hang. When I skip to the next song manually, the system hangs. I've been using Windows XP for years and consider myself a fairly professional windows user, but I have no idea what could cause this. Dual-core 2Ghz, 2GB RAM, Windows XP SP3, Audigy card with kxproject. Worked flawlessly for years. Would be glad if anyone could help.

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  • Best Solution For My Requirements

    - by Eray
    Hello, I'm a web developer. I have a few small online web application and a few Wordpress blogs. But i don't have too much experience with installing / configuring web servers . One of my web application needs cron jobs. It will check a lot of web sites availability. And, this application will leech too much RAM. And i think shared-hosting isn't suitable for this. But 1GB storage is enough i think. I don't need too much storage for my web sites. What do you think ? Which hosting solution is more suitable for my requirements ? Reseller ? VPS ? Cloud Server ? etc ...

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  • ffmpeg encoding on QuadCore

    - by Gotys
    I am trying to push my server's CPU cores to the max, but no success. Encoding 2-pass style, set my "-threads" to 128 . When running 2nd pass , the CPU seems to be at 98% usage, but first pass run totally ignores "-threads" option. Using libx264 . Here is my preset: flags=+loop+mv4 cmp=256 partitions=+parti4x4+parti8x8+partp4x4+partp8x8+partb8x8 me_method=hex subq=7 trellis=1 refs=5 bf=3 flags2=+bpyramid+wpred+mixed_refs+dct8x8 coder=1 me_range=16 g=250 keyint_min=25 sc_threshold=40 i_qfactor=0.71 qmin=10 qmax=51 qdiff=4 Is there any reason why the 1st pass is not utilizing my CPUs ? Thank you in advance! This community has always been very kind to me.

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