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• PC always boots into Command Line

  - by Neptun1337

  My current Problem is, that when I try to install Ubuntu 12.04 Desktop, neither unity nor gnome are installed. During the installation, I am prompted with the message that only the core is installed, and which additional packages I would like to have installed. When I select ubuntu-desktop, the installer grabs some packages and installs them, but after completing the installation and booting into my Ubuntu, i dont get any GUI, but instead I have the command line interface. When I try to start a new Unity session, i get an error saying that Unity is not installed, so I tried to install it. However this changes nothing, my PC still boots into the Command Line. Are there any solutions to my problem? Any help would be greatly appreciated. Thanks in advance. EDIT: I tried to fix it with the following commands: $ sudo apt-get install ubuntu-desktop $ sudo apt-get install gdm $ sudo /etc/init.d/gdm start When I try to boot, I get the Ubuntu splash screen, but then the screen mainly shows white squares, with a few black ones at the top.

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• No sound Ubuntu 12.04 through HDMI

  - by MikeMan

  Specs: Asus G73JH i7/720; ATI Mobility 5870 I have read through a lot of threads on getting HDMI sound to work and non of them have fixed my issue. Granted I am very new to Linux and know only the GUI aspect of what it does from finding similarities that Windows 7 has. I would like to become a Linux Power User and I figured this would be a good step to get started. I was able to successfully install my graphics driver and it shows in use. I connect the HDMI to my HD TV and I get no sound. I don't care about auto switch for sound, that would be great but not necessary. I just want my sound to work through the HDMI. What I have tried: Changed GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash radeon.audio=1" pact set-card-profile 0 output:hdmi-surround Failure: no such entity Sound Settings: Right-click Sound indicator ? Sound Settings ? Output Tab, and set Digital Output (S/PDIF) Built in Audio Speakers Built in Audio I only get 2 settings. If I right-click the area below those 2 in the "play sound through" box, I get no "show hidden devices". I am also doing all this with the HDMI connected to eliminate any possibility for error.

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• Which hard disk drive is which?

  - by djeikyb

  I want to know which hard disk drive corresponds to which device path. It's trivial to match the hard disk stats (brand, size) with the dev path, but I want more. I want to know which drive is which inside my case. What's a good way to go about getting this info? Rules: I am a lazy bum. I don't want to tear apart my server to remove all the drives, then add back one by one. A reboot is acceptable. The drives are inconveniently scrunched together in the case. All label information is hidden. The case can be opened. Most disks are SATA, so theoretically hot swappable. Unplugging cables is fair game. Bonus: For a cli only solution. I'll award answer to the best/easiest gui or cli answer, and give a bounty to the next-best answer of the other kind. Or maybe the other way around, because the bounty is worth more points.

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• Laser range finder, what language to use? Beginner advice

  - by DrOnline

  I hope this is the right place. I am a programming beginner, and I want to make a laser range finder, and I need advice about how to proceed etc. In a few weeks I will get a lot of dirt cheap 3-5V lasers and some cheap usb webcams. I will point the laser and webcam in parallel, and somehow use trigonometry and programming to determined distance. I have seen online that others made done it this way, I have purposefully not looked at the details too much because I want to develop it on my own, and learn, but I know the general outline. I have a general idea of how to proceed. The program loads in a picture from the webcam, and I dunno how images work really, but I imagine there is a format that is basically an array of RGB values.. is this right? I will load in the red values, and find the most red one. I know the height difference between the laser and the cam. I know the center dot in the image, I know the redmost dot. I'm sure there's some way to figure out some range there. TO THE POINT: 1) Is my reasoning sound thus far, especially in terms of image analysis? I don't need complete solutions, just general points 2) What I need to figure out, is what platform to use. I have an arduino... apparently, I've read it's too weak to process images. Read that online. I know some C I know some Python I have Matlab. Which is the best option? I do not need high sampling rates, I have not decided on whether it should be automated or whether I should make a GUI with a button to press for samples. I will keep it simple and expand I think. I also do not need it to be super accurate, I'm just having fun here. Advice!

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• What's the best way to handle numerous recurring log entries in game loop?

  - by Kaa

  I have a custom logging system, use of which is scattered all over the engine and game. The system is linked to a "LogStore" that has an std::vector<string> logs[NUM_LOG_TYPES] - each vector corresponds with it's log type (info, error, debug, etc.). There's one extra std::vector that has "coordinates" to all log entries in the order they were received. Now, all the logging output is also displayed inside my development console in the game. The game console is handled by HTML-type GUI and therefore requires a new <p> element being added for each log output. My problem is that the log entries that are generated in the main loop each frame freeze the engine, because they continue to add elements to the in-game console, and if the console or guy generates a warning - that creates an infinite logging loop. I want to solve it by handling the recurring log entries in an elegant way that lets you know that something is critically wrong, but won't freeze the engine - like displaying the count of errors in the last 60 frames instead of displaying errors themselves. But how do you guys handle this? Does anyone know any nifty tricks to do this? I understand the question may sound vague, but if someone came across this type of issue I'm sure they would know exactly what's happening. Example problematic log entries: OpenGL warnings (I actually do check for errors every frame in many places) Really any prints anywhere in the main loop (may be debugging, may be warnings)

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• Been doing .NET for several years and am thinking about a platform change. Where do people suggest I go?

  - by rsteckly

  Hi, I've been programming in .NET for several years now and am thinking maybe its time to do a platform switch. Any suggestions about which platform would be the best to learn? I've been thinking about going back to C++ development or just focusing on T-SQL within the Microsoft stack. I'm thinking of switching because: a) I feel that the .NET platform is increasingly becoming commodified--meaning that its more about learning a GUI and certain things to click around than really understanding programming. I'm concerned that this will lend itself to making developers on that stack increasingly paid less. b) It's very frustrating to spend your entire day essentially debugging something that should work but doesn't. Usually, Microsoft releases something that suggests anyone can just click here and there and poof there's your application. Most of the time it doesn't work and winds up sucking so much more time than it was supposed to save. c) I recently led a team in a small startup to build a WPF application. We were really hit hard with people complaining about having to download the runtime. Our code was also not portable to any other platform. Added to which, the ram usage and slowness to load of the app was remarkable for its size. I researched it and we could not find a way to optimize it. d) I'm a little concerned about being wedded to the Windows platform. What are the pros and cons of adding another platform and which platform do people suggest? Thanks!

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• So You Want To Build a SPARC Cloud

  - by user12601629

  Did you ever wish you could get the industrial strength power of UNIX/RISC with the flexibility of cloud computing?  Well, now you can!  With recent advances from Oracle it's possible to build an incredibly high-performance, flexible, available virtualized infrastructure based on Solaris and SPARC.  Here's the recipe! Authored in collaboration across the Oracle "Systems Group" team, we now have a complete best practice guide for you.  Click below to download it: Best Practices for Building a Virtualized SPARC Computing Environment Inside you'll find recommendations for how and when to leverage technologies like: SPARC T4 OVM for SPARC hypervisor (version 2.2 and newer) Solaris 11 Ops Center 12c ZFS Storage Appliance Oracle network switches Based on following these best practices, you'll be able to construct a dynamic, virtualized infrastructure that allows for: Easy, GUI-based provisioning on new VMs Automated HA failover in the event of physical server failures Automatic load balancing across a cluster of VM hosts Complete end-to-end monitoring You should download this paper and check it out.  Even if you aren't planning on buying all new hardware, and instead want to transform some existing gear into a dynamic virtualized environment then this paper will give you concrete info on what to do and the trade-offs you'll make. Have fun getting started on your journey to build a SPARC cloud!

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• How do I force the system to look for new sound devices?

  - by John Zeringue

  I have a small flat screen TV (Toshiba) that I often connect via HDMI to my laptop (an HP Pavilion dv4) and use as a computer monitor. When I do this, I prefer to use the TV's speakers, particularly when I'm watching video, because the sound quality is much better. However, when I connect the HDMI cable after turning on my computer (rather than having it plugged in before booting up), Sound Settings does not list the TV as an output device, and I am forced to reboot. I was curious if there is an easier solution to this, perhaps a CLI command to check for new sound outputs. Does anyone know of something like this or have another solution? To clarify, I believe this is a software problem. The HDMI always works, and I can switch my desktop over to the TV at any time. The issue is that, if the HDMI wasn't connected during start up, the TV will not appear as an output option in the Sound Settings GUI. So, unless I'm mistaken, my question is not HDMI specific, but rather a general usage question about manipulating sound settings from the command line.

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• SourceMonitor Beta Test Version 3.3.2.261 now available

  - by TATWORTH

  Source Monitor is a useful independent utility for producing code metrics. Beta Test Version 3.3.2.261 has been released.Download and test Source Monitor beta (Version 3.3.2.261 - 2.30 MBytes)  via HTTP"The Beta page is at http://www.campwoodsw.com/smbeta.htmlHere is the official description of it>The freeware program Source Monitor lets you see inside your software source code to find out how much code you have and to identify the relative complexity of your modules. For example, you can use Source Monitor to identify the code that is most likely to contain defects and thus warrants formal review. Source Monitor, written in C++, runs through your code at high speed. Source Monitor provides the following: Collects metrics in a fast, single pass through source files.Measures metrics for source code written in C++, C, C#, VB.NET, Java, Delphi, Visual Basic (VB6) or HTML.Includes method and function level metrics for C++, C, C#, VB.NET, Java, and Delphi. Offers Modified Complexity metric option. Saves metrics in checkpoints for comparison during software development projects.Displays and prints metrics in tables and charts, including Kiviat diagrams.Operates within a standard Windows GUI or inside your scripts using XML command files.Exports metrics to XML or CSV (comma-separated-value) files for further processing with other tools.

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• some questions related to ubuntu app showdown

  - by user49557

  Where to ask questions related to ubuntu app developer showdown? http://askubuntu.com/questions/151148/how-do-i-participate-in-the-ubuntu-app-showdown Can I use old code by myself to build on for my entry in the Ubuntu App Showdown contest? after seeing these threads and posting a question at askubuntu where to ask questions related to ubuntu app showdown i got we can ask these questions here my questions: can i submit more than one app in the contest and tell me more about this suppose i submit 5 apps out of which one is won then will it be valid if 2 or 3 are won i think the number of t-shirts does not depends upon number of apps one per person for development i have to use quickly but can i use third party libraries for GUI or other work i think i will need it for eg. pyside the first and second winner will get laptop + mobile too right or not the mobile how the prizes will be delivered will they charge(i don't think so) i would like to use multiple libraries i can use htme right ? more details are always welcomes i have mostly all ubuntu app showdown related pages but if you find something in background than tell me note:i am not saying that i am going to win just questions don't take it in that way

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• How do I get my Intel HD graphics to work alongside my HD7850, as my second(HDMI out) monitor?

  - by AlexTes

  Title says it all. Further info: Motherboard: http://www.asrock.com/mb/Intel/Z77%20Pro3/ Processor: http://ark.intel.com/products/65520/Intel-Core-i5-3570K-Processor-%286M-Cache-up-to-3_80-GHz%29 So currently my main screen is running on my HD7850. Got drivers from the amd website. I have looked through dozens of questions here. I'm about to try booting Ubuntu from a stick and seeing if the xorg-edgers drivers might help. When booting, all action goes down on the very screen I'm trying to get to work.*EDIT never mind this. Seems to be special boot magic. As the screen only displays whiteline errors once the gui of ubuntu has kicked in and everything graphic is happening through my graphics card again. Connected through HDMI(motherboard)-DVI. So unless having multiple displays is a huge deal the solution hopefully isn't that complicated. I just feel I'm missing something simple. If this really is complicated, I should probably just hook up the display to my graphics card. My CPU is usually the one chilling out though so I'd like to try to get that to work. Also just because I don't want to buy an extra cable and this set up makes me feel warm and fuzzy inside. Tell me what to try or look up, I'll be most appreciative. Thank you! **UPDATE The x-swat ppa installed some intel stuff. Booting with one monitor plugged into the motherboard gives nothing. Doing it with the pc already on gives the purple "Ubuntu" with 5 dots boot/shutdown screen.

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• Can't install GTX 680 drivers on 12.04

  - by user68945

  I recently installed Ubuntu 12.04 on my desktop. I have three monitors, and after installing, ubuntu only detected one at 1080p. I downloaded the driver from the nvidia website, but when I stop lightdm and try to run the driver, it gives me an error message: ERROR: Unable to find the kernel source tree for the currently running kernel. Please make sure you have installed the kernel source files for your kernel and that they are properly configured; on Red Hat Linux systems, for example, be sure you have the 'kernel-source' or 'kernel-devel' RPM installed. If you know the correct kernel source files are installed, you may specify the kernel source path with the '--kernel-source-path' command line option. I tried instead to install the driver via the terminal, with the X ppa. The installation seemed to work, but when I rebooted, my display was at 640x480 resolution, with no other options for resolution. The NVIDIA X Server settings program is there now, but when I run it, it simply tells me that I don't seem to be using their driver, and that I should run nvidia-xconfig as root. Doing so doesn't help, I simply get the same issue again. I checked the file at /etc/X11/xorg.conf, and it's an NVIDIA file (has nvidia in the header). Does anyone know something else I can try? EDIT: Forgot to mention, I tried installing drivers via the "Additional Drivers" GUI utility, there were two options, one of them marked "(post-release updates)". I tried both of them, in both cases it tried to download and install for a while, then said that there was an error, and that a description could be found at /var/log/jockey.log. Both logs were over 700 lines

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• dist-upgrade broke my insatll HELP

  - by diefuchsjagden

  so I ran apt-get update; apt-get dist-upgrade the upgrade failed and I lost the gui, I have an encrypted /home drive. When I run apt-get * (any command) I have all kinds of errors mostly missing depends and thats because apparently my network stack is gone. I have no NIC if I run ifconfig. It doesn't even show up with lspci If I were to do a "clean" install of 10.04 LTS which is what I had on my on my build, will I lose all my data? BTW I was just using Ubuntu's default encryption to manage the encryption using my PSWD as the key so if I were to use the same user name and PSWD would my data be accessible? I can see my data from command line, when or if Xorg does start it just loads a basic window with nothing but a black X in the middle of the screen which I can only assume is my mouse cursor but it doesn't move! Reddit /r/linux had some ideas none of which worked was, no help. And apparently /r/ubuntu is full of jerks because all they did was ridicule me. If I can get my install back I probably will be switching back to either Slackware or Gentoo. The Ubuntu forums were of no help they had the same suggestion as /r/linux. I am about to just run my back up script to my back up drives and nuke everything else but I'd rather not.

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• One sentence descriptions of the various common software licenses?

  - by Rich

  Instead of having to read entire documentation and sift through all the legalese, can someone outline the more common licenses in language that is short and sweet and gets right to the point? Specifically, I'm using a 3rd party control that uses the Apache 2.0 license. My intention is to use this in a proprietary application that I am building for a corporation's use (not resold, but I'm being paid for my work). Does this mean I can or cannot use this control? Does it mean that I must maintain copyright/license information in my code? Does it mean that I must mention copyright/license information in a clearly visible location in the app? EDIT In response to an answer below with a link to an article by Jeff Atwood, the Apache license is described as follows: Apache License Open Permissive 9 Requires derivative works to provide notification of any licensed or proprietary code in a common location. Does this notification need to be in a "common location" in my source code or a common location visible within the app? What if this were a non GUI app (I'm assuming that could very well be my answer)? Thanks for the responses!!!

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• Ubuntu (i386 - 32bit) 12.04 LTS [DESKTOP] - Freezes During Preparing to Install

  - by Michael Ecklund

  I know this is for the Desktop version of Ubuntu, but I definitely plan on installing the server as well. I just want a GUI to manage my server. Here is what I have done: Placed Ubuntu i386/32bit 12.04 LTS [DESKTOP] disc in the disc tray. The disc loads fine. Clicked install Ubuntu. Without checking the download updates while installing or install this third-party software. Clicked continue. Mouse cursor turns to spinning circle and remains a spinning circle while the screen freezes its place at "Preparing to install Ubuntu". I tried not checking any of the boxes and clicking continue. I tried checking Download updates while installing. I tried checking Install this third-party software. I tried checking BOTH Download updates while installing AND Install this third-party software. Does anyone else face this very same issue? Is there a workaround for this problem? Do I need to use a lower version of Ubuntu? If so, which version do you recommend for my system specifications? My system meets the system requirements. Here are my exact system specifications. (Custom modifications: 320GBx2 HDD && 256MB AGP GFX card && 1GBx2 RAM)

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• For photography use, is Unity is overheating my laptop? Should I try OpenSuse instead?

  - by SoT

  I am a perfect noob here in the Linux world. Previously was using Windows 7. Mine is an HP laptop - Intel core2duo T5470 @ 1.60GHz × 2 / 965GM with 2GB RAM. I installed Ubuntu 12.04TLS and is quite liking it's display. I really recognized it is 3D before knowing it was Unity 3D interface. My uses are image editing, home uses, downloads, browsing etc.. No video-editing/gaming at all. Being a Photography enthusiast I use image editing programs fairly more. But I am now feeling my laptop is getting a bit overheated - processor and hard-disk. I tried lm-sensor and could not make out much of it. Installed Xsensors.7. It gives the same output as lm-sensors gave me. It gives temperature for 4 things Temp1, temp2, temp3, and temp4. For "acpitz". Please guide me in this. However I wanted to ask something more. Which one is better for working with images - photography I mean - openSUSE 12.1 or Ubuntu with unity 3D? Can I get the display quality with the openSUSE distribution? I heard for laptops openSUSE uses power more efficiently, is there any truth? Please suggest me whether I should try openSUSE or not. If so with which GUI? KDE or GNOME? Thanks in advance. Regards SoT

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• Oracle Java ME Embedded Client 1.1????

  - by sasa

  6?26???????????Java ME????????Oracle Java ME Embedded Client (OJEC) 1.1???????????CDC 1.1.2?Foundation Profile (FP) 1.1.2???????????ARM, MIPS, x86?Linux???????????Security Optional Package, RMI, JDBC, XML API, Web Services?????????????????????????????·???????????? 2011?5???????1.0??????????????XML API???????????????????????????????????????????x86?????????????x86????????Just-in-Time (JIT)?????????????? ?????????????????????(????GUI??)??????????????Linux (x86)?JDK 6?????????????????????? CPU OS ROM RAM ARM (v5) Linux 2.6.31??, glibc 2.10.2?? 5MB?? 8MB?? ARM (v6, v7) Linux 2.6.35??, glibc 2.12.1?? 5MB?? 8MB?? MIPS (MIPS32 74K) Linux 2.6.22??, glibc 2.8?? 5MB?? 8MB?? x86 (Pentium III??) Linux 2.6.35??, glibc 2.12.1?? 5MB??  8MB?? OJEC 1.1??????????????OTN??????????????????????????????????????Java Embedded??????????? OJEC 1.1 ?????? OJEC 1.1 ??????

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• 11g R2 on Windows???????!

  - by [email protected]

  Oracle Database?????????11g Release2(R2)?????????????Windows???????! ????Windows 7? Windows Server 2008 R2????????11g R2 for Windows????????OTN???????11gR2??????????????????????????????? ??????????????! OTN??????????????????????????????????????????????????????????????(?)????????????????????????????????????? http://www.oracle.com/technology/global/jp/software/products/database/index.html ? ???????????????????????????????????????????????????????????????? ??????????????????????? ???????! ??????????????????·??·??????????·??????·RAC????????????? GUI(Oracle Enterprise Manager)????????????···?????????????2??xx????? ??? http://download.oracle.com/docs/cd/E16338_01/index.htm????????????????????? ???????! ???PC?????????Oracle Direct Seminar?????????????????????????????11gR2?????????????????????? ???????????3???????? 2010?4?28?(?) 11:00~12:00 Windows 7 / Windows Server 2008 R2 ?????? Oracle ! 2010?5?26?(?) 11:00~12:00 ? ????DB??????????11g R2??? 2010?5?19?(?) 18:00~20:00 [Oracle Evening Seminar]Oracle Database 11g Release2?Windows Server 2008 R2/Windows7?????! 2010?5?22?(?) 13:00~17:00 [Oracle Weekend Seminar] ????????! Oracle Database ??? ????????????????????????????????! ????????????? ????????????????????? http://www.oracle.com/technology/global/jp/documentation/database.html OTN???????11gR2 ??????????????????????????????????????????????????????? ??? ????????????????????????????????????????????????????????????? ???????? ?????? ?????? FAQ ??????????????FAQ?????????? Coming Soon! 11gR2 on Windows ???????????????5???????????????????? ???????!???????????????????????????????????????··! ???????Oracle Database??????????????????OTN???????????????! ???????????????http://www.oracle.com/technology/global/jp/membership/index.html

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• What differences should I know? I just upgraded to 13.10 from 10.10 [on hold]

  - by test

  I ran Ubuntu 10.10 for a long time because I liked the menu style. The change in GUI with the upgrades drove me nuts but I finally gave in and downloaded Saucy Salamander 13.10 x64. It's a fresh install running as a virtual machine guest in VMWare Workstation 9 on a Windows 7 x64 host. Well it looks like all those icons are still there on the side which I would be OK with if there were some way to bring back my menus. I have no organized way of accessing things now, or do I? That is the purpose for this question, maybe there is some functionality I just can't find but is there. Also all my fine tuning was gone. I used to be able to change DPI but that's gone. I went ahead and installed Unity Tweak Tool via sudo apt-get install unity-tweak-tool but I couldn't find an icon for it after I installed it.. because again no menu. So I did a search for it and found it there. I've changed the font and which side the window buttons appear on which is good enough for now. Anyway... any suggestions you may have for me I'm game. I'm a Windows 7 user primarily but I use Ubuntu every once in a while. I really liked the old style where everything was categorized like for Applications there was Accessories, Games, Graphics, Internet, Office, Sound & Video, Wine.

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• 4?????????????(Database??)

  - by rika.tokumichi

  ???????????OTN????????? ???????5???????????????????????????????????????? ?????????????????????????????????? ????????????????????????????????????????????????????? ????????????????????????????????????^^ ???Database??????????????4?????????????????????????????????? ??????????? 1?:Oracle Database 11g Release 2?Download? 2?:Oracle Database 10g Express Edition?Download? 3?:Oracle SQL Developer 2.1 (2.1.0.63.73)?Download? 4?:Oracle Database 11g Release 1?Download? 5?:Oracle Database 10g Release 2?Download? (????4?1?~4?30?) ??????????Oracle Database 11g Release2?Windows?????????????????? Oracle Database 11g Release 2?4?????????! Oracle Database 11g Release 2 5??1? ? Oracle Database 10g Express Edition 3??2? ? Oracle SQL Developer 1??3? ? Oracle Database 11g Release 1 2??4? ? Oracle Database 10g Release 2 4??5? ? ???Oracle Database 11g Release2?Windows???????????? ???: >11g R2 on Windows???????! ???:???????????GUI??????/???????????????? >?????!? Oracle Database 11g Release2 - Windows? ???????????(PDF) ????:Oracle Database 11g R2?????????????????????6?15???!! >Oracle Database 11g R2 Windows? ??????!??????????? ???????????

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• ????????! ?????????????????JRockit Flight Recorder????|WebLogic Channel|??????

  - by ???02

  ???????????????????????????????????????WebLogic Server????????·??????????????????????????????????????????????WebLogic Server????????????????????????????????????????????????????????????????????????JRockit Flight Recorder???WebLogic Server????????????????????????????????????????????????????????????????????????????????????????(???)?????????????????――????????JRockit Flight Recorder　???????????·??????????????????????????????????????????????????????????????????????????????????　????Java?????(JVM:Java Virtual Machine)??????????????????????????????????·??????????????????·?????????????????????????????????·???·????????????????????????????????????????????·?????JVM?????????????????????????????????????????????????????????????????????????????????????????????　???JVM?????????????·??????(Out of Memory Error)????????????????·???????????·??????(GC)?????????????????????????????????????????????????????????JVM?????????GC????????????????????????????????????????????????　???????????????????2010?7?????????WebLogic Server Enterprise Edition 11g R1 Patch Set 2???????????????????JRockit Flight Recorder????????????????????????????????????????????????????????????????????????????????????????????????????JRockit Flight Recorder????????OS?????????·?????CPU??????????????????????JVM?????????JVM?????????·????????????·??????????????????·????????JVM?CPU????????·?????????·????JIT?????????????????Java????????·???????/???????????????/????????????WebLogic Server????????????EJB?JDBC?Web?????JTA??????????????????????????????　??WebLogic Server??????????????????????????JRockit Runtime Analyzer??????????Runtime Analyzer?????????????????????????????????????????WebLogic Server?????????????????????????????????JRockit Flight Recorder??????????????????????????????????????????????　JRockit Flight Recorder????????????????????????????????????????????????????????　???Java EE???????????????????????????????????????????????????JVM?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????　???????JRockit Flight Recorder????JVM(JRockit)?????????????????????????????????????????????????????????????3%??????????????????????????????????????????????????????????????????????????　????????JRockit Flight Recorder?????????????????????????????????????????????????????????????????????????JRockit Flight Recorder?????　JRockit Flight Recorder????????????????????(????????????????????????)??????????????????????????(???????·????)???????????????　???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????　???????JRockit Flight Recorder??????????????????????????????????????????·?????????????????????????????????????(?????GUI????Oracle JRockit Mission Control????)????????·??????????????????????????????JRockit Flight Recorder?????????????????????　??????????????????????JRockit Flight Recorder?WebLogic Server Enterprise Edition???????????WebLogic Server??????????????????????????????????????????????????????????????????????????????????????????????????　??????????JRockit Flight Recorder?????????????????????????????????????　????????JRockit Flight Recorder??????????????????????????????????????????·?????????????????JRockit Mission Control???????????????????????????????????????　??????????????????????????????????????????????????????????????????????????????????????????????????????????????　???????????????????????????????????????????????????????????????????????????????????????????????????????????????????　??????????????1????????????????????????????????????Thread Parked????????????????????????????????????????????Thread Parked?????????????????????????????　???JRockit Flight Recorder?JDBC??????????????????SQL??????????????????????????????????　??????·???????????????????????????JRockit Flight Recorder?????????1???????????SLA??????　JRockit Flight Recorder?????????????????????　????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????　????JRockit Flight Recorder???????????????????????????????????SLA(Service Level Agreement)??????????????????????????????????????????????????????????????????????????????????????????　????????????JRockit Flight Recorder???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????JRockit Flight Recorder????????????1???JRockit Flight Recorder?????????????????　????????JRockit Flight Recorder??????????????????????????????????????????????????　???JRockit Flight Recorder??????????????????1??????! ?????????????????????????????????3????????????????????????????6??????????????????13???????????????????????????????????????????????????????20???????????????????????35???????????????38??????????????????????????　???????JRockit Flight Recorder???????????????????????????1??????! ??????????????????JRockit Flight Recorder??????????????????????3???????????????????18???????????????21??????????????????????????　??????????????JRockit Flight Recorder????????????????????????????????????????JRockit Flight Recorder???????????????????????????????????????????????????JRockit Flight Recorder????????????　??????????????????·???????????????????????JRockit Flight Recorder???????????????????????????? ???????????????????????????????――???????????????????　???????????JRockit Flight Recorder??????2????1??????????????????????????????????????????????????????????　??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????JRockit Flight Recorder???????????????????????????????????????????????????????????????????SIer???????――???????/????????????????　JRockit Flight Recorder????????????????????IT?????????SIer?????????????　??????????????????????????SIer?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????(???????)??????????????????????????????????????????????????????????????????????????　???JRockit Flight Recorder??????????????????????????????????????????????????????????????????????????????????????????/????????????????????????????????????????*　　　*　　　*　???????WebLogic Server Enterprise Edition???????????????????JRockit Flight Recorder????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????WebLogic Server?????????????JVM Oracle JRockit??? ???? ···???JVM?Oracle JRockit??????????????????????????JRockit Flight Recorder????????????????? ?????45???????????????????????????????????? ?WMV?? ?MP4??

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• ????????????????????????|WebLogic Channel|??????

  - by ???02

  ???Java EE???????????????????????·???????????????????·??????????????????????????????????·???????????????????????????????????WebLogic Server?????????????????????????·???????????????????????????????2??????????WebLogic Server???????????????????·????????????????????????????????WebLogic Server?????????????????????(???)?Java EE???????????????????????·???　?????????WebLogic Server??Java EE??????????????·???????????????????????????????·???????Java EE ???????????????????????/?????????????????????????????????　????????????WebLogic Server 12c(12.1.1)?????????????Standard Edition?Enterprise Edition?WebLogic Suite?3???????????????????????????·???????Standard Edition???????????????????????/????????????Enterprise Edition?????WebLogic Suite??Enterprise Edition??????????????????????????????WebLogic Real Time???????·??????????Coherence Enterprise Edition????????????????????¦??????????????????????????????????　???????WebLogic Server??????????????????????????????????????????????　???Java???????????????·?????????Java EE????????????WebLogic Server????????????????????????????????　?????????????·?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????　???????????????????2??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????　????????????WebLogic Server???????????????????????????????????????2???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????¦??????????????????????????WebLogic Server????????·??????????――?????·??????·???????????WebLogic??????????????????????????????　???????????????????????????????????????????WebLogic Server?????????Java EE????????·??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????WebLogic Server??????????????????????????????????????????????????????????????????????????????????????JRockit Flight Recorder　WebLogic Server???????·??????·????????????????JRockit????JVM??????????JVM??????????????????JRockit Flight Recorder????????????????　?????????????????????????????JRockit Flight Recorder?????????????????????????????????????????????????????????JRockit Flight Recorder??????????????????????JRockit Mission Control????????????????GUI?????????????????????????????????????¦????????????! ?????????????????JRockit Flight Recorder??????JRockit Mission Control! ?????WebLogic??????????????????????????????????????JRockit Mission Control! ?????WebLogic?????????????????????OutOfMemory????????????????????????????Oracle Database??????????　????????·?????????1???????????????????Java EE????????·??????????????????????????SPEC jApp Server2004????2010?????????WebLogic Server?????????????????????????????　?????????????????????????????????Java EE????????????????????????????????????JVM????????·??????(GC)?????????????????????????????????????????GC??????GC????????????·????????????????????????????????????????????????????????????????????????WebLogic Real Time?????GC?????????????????????????????????????????????????????GC???????????????????????????????　????WebLogic Server???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????WebLogic Server???????????????????????????????????????　?????????????????????????????????????·???????????????????????????????????????????????????????????????????????????????????????????????????????????　????????????Oracle Database????????????Java EE????????·???????????????????Oracle Database????????????????Oracle Real Application Clusters(RAC)????????????????????????Oracle RAC?????????????????????????????????????????????????????????????????????WebLogic Server?Oracle Database?????????????????????????????????????????????????¦????WebLogic?RAC????????????――Active GridLink for RAC????RAC??????????????????????????WebLogic?RAC????????????――Active GridLink for RAC?????????????4????WebLogic Server??????/??　???WebLogic Server???????????????????????????????????????????WebLogic Server???/??????????????1???????????????·?????????????????????????????　1?????????1??????????????????????????????(???????)???/?????????????????????????????????????????????/?????????????　???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????　????????WebLogic Server??????????????????????????WebLogic Server?????????????????????????¦??????????Oracle WebLogic Server ???????·????????????WebLogic Server?????????????????????!?????

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• iproute2 not functioning ("RTNETLINK answers: Operation not supported")

  - by James Watt

  The command and error message: gtwy ~ # ip rule add from 64.251.23.186 table t1 RTNETLINK answers: Operation not supported Older article of the same problem, but it did not help me: http://forums.gentoo.org/viewtopic-t-696982-start-0-postdays-0-postorder-asc-highlight-.html I have looked on google at great lengths to try to find a solution. It seems that my kernel configuration is missing something? Any help or ideas would be appreciated. My system/kernel is: 2.6.36-gentoo-r5 #3 SMP Thu Jan 13 10:49:06 EST 2011 x86_64 Intel(R) Xeon(R) CPU X3220 @ 2.40GHz GenuineIntel GNU/Linux. I am posting this on SuperUser since this system is used as a workstation and this problem is unrelated to specific tasks that are handled exclusively by servers. iproute2 is installed: gtwy etc # emerge --search iproute2 Searching... [ Results for search key : iproute2 ] [ Applications found : 1 ] * sys-apps/iproute2 Latest version available: 2.6.35-r2 Latest version installed: 2.6.35-r2 Size of files: 378 kB Homepage: http://www.linuxfoundation.org/collaborate/workgroups/networking/iproute2 Description: kernel routing and traffic control utilities License: GPL-2 A small snippet of my kernel .config (view entire .config): gtwy linux # cat .config | grep NETLINK CONFIG_NETFILTER_NETLINK=y CONFIG_NETFILTER_NETLINK_QUEUE=y CONFIG_NETFILTER_NETLINK_LOG=y CONFIG_NF_CT_NETLINK=y CONFIG_SCSI_NETLINK=y gtwy linux # cat .config | grep IP_ADVANCED_ROUTER CONFIG_IP_ADVANCED_ROUTER=y gtwy linux # cat .config | grep INGRESS CONFIG_NET_SCH_INGRESS=y gtwy linux # cat .config | grep NET_SCHED CONFIG_NET_SCHED=y emerge --info Portage 2.1.9.25 (default/linux/amd64/10.0, gcc-4.1.2, glibc-2.10.1-r1, 2.6.36-gentoo-r5 x86_64) ================================================================= System uname: Linux-2.6.36-gentoo-r5-x86_64-Intel-R-_Xeon-R-_CPU_X3220_@_2.40GHz-with-gentoo-1.12.13 Timestamp of tree: Thu, 13 Jan 2011 01:15:01 +0000 app-shells/bash: 4.0_p37 dev-java/java-config: 1.3.7-r1, 2.1.10 dev-lang/python: 2.4.6, 2.5.4-r4, 2.6.5-r2, 3.1.2-r3 sys-apps/baselayout: 1.12.13 sys-apps/sandbox: 1.6-r2 sys-devel/autoconf: 2.13, 2.65 sys-devel/automake: 1.9.6-r2::<unknown repository>, 1.10.2, 1.11.1 sys-devel/binutils: 2.20.1-r1 sys-devel/gcc: 4.1.2, 4.3.4, 4.4.3-r2 sys-devel/gcc-config: 1.4.1 sys-devel/libtool: 2.2.6b sys-devel/make: 3.81 virtual/os-headers: 2.6.30-r1 (sys-kernel/linux-headers) ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="*" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=nocona -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /var/bind" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-march=nocona -O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="assume-digests binpkg-logs distlocks fixlafiles fixpackages news parallel-fetch protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch" GENTOO_MIRRORS="http://gentoo.chem.wisc.edu/gentoo" LC_ALL="en_US.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LINGUAS="en" MAKEOPTS="-j5" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.namerica.gentoo.org/gentoo-portage" USE="acl amd64 apache2 berkdb bzip2 cli cracklib crypt ctype cups curl cxx dri fortran gdbm gpm iconv jpeg jpeg2k libwww mmx modules mudflap multilib mysql ncurses nls nptl nptlonly openmp pam pcre perl php png pppd python readline session sockets sse sse2 ssl symlink sysfs tcpd threads unicode vhosts xml xorg xsl zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ubx" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en" PHP_TARGETS="php5-3" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="fbdev glint intel mach64 mga neomagic nouveau nv r128 radeon savage sis tdfx trident vesa via vmware dummy v4l" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LANG, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

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• Apache doesn't run multiple requests

  - by Reinderien

  I'm currently running this simple Python CGI script to test rudimentary IPC: #!/usr/bin/python -u import cgi, errno, fcntl, os, os.path, sys, time print("""Content-Type: text/html; charset=utf-8 <!doctype html> <html lang="en"> <head> <meta charset="utf-8" /> <title>IPC test</title> </head> <body> """) ftempname = '/tmp/ipc-messages' master = not os.path.exists(ftempname) if master: fmode = 'w' else: fmode = 'r' print('<p>Opening file</p>') sys.stdout.flush() ftemp = open(ftempname, fmode) print('<p>File opened</p>') if master: print('<p>Operating as master</p>') sys.stdout.flush() for i in range(10): print('<p>' + str(i) + '</p>') sys.stdout.flush() time.sleep(1) ftemp.close() os.remove(ftempname) else: print('<p>Operating as a slave</p>') ftemp.close() print(""" </body> </html>""") The 'server-push' portion works; that is, for the first request, I do see piecewise updates. However, while the first request is being serviced, subsequent requests are not started, only to be started after the first request has finished. Any ideas on why, and how to fix it? Edit: I see the same non-concurrent behaviour with vanilla PHP, running this: <!doctype html> <html lang="en"> <!-- $Id: $--> <head> <meta charset="utf-8" /> <title>IPC test</title> </head> <body> <p> <?php function echofl($str) { echo $str . "</b>\n"; ob_flush(); flush(); } define('tempfn', '/tmp/emailsync'); if (file_exists(tempfn)) $perms = 'r+'; else $perms = 'w'; assert($fsync = fopen(tempfn, $perms)); assert(chmod(tempfn, 0600)); if (!flock($fsync, LOCK_EX | LOCK_NB, $wouldblock)) { assert($wouldblock); $master = false; } else $master = true; if ($master) { echofl('Running as master.'); assert(fwrite($fsync, 'content') != false); assert(sleep(5) == 0); assert(flock($fsync, LOCK_UN)); } else { echofl('Running as slave.'); echofl(fgets($fsync)); } assert(fclose($fsync)); echofl('Done.'); ?> </p> </body> </html>

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• Where is my VMware-ws FreeNAS CIFS(ZFS) bottle-neck?

  - by maka

  Background: I'm building a quiet HTPC + NAS that is also supposed to be used for general computer usage. I'm so far generally happy with things, it was just that I was expecting a little better IO performance. I have no clue if my expectations are unreal. The NAS is there as a general purpose file storage and as a media server for XBMC and other devices. ZFS is a requirement. Question: Where is my bottle-neck, and is there anything I can do config wise, to improve my performance? I'm thinking VM-disk settings could be something but I really have no idea where to go since I'm neither experienced with FreeNAS nor VMware-WS. Tests: When I'm on the host OS and copy files (from the SSD) to the CIFS share, I get around 30 Mbytes/sec read and write. When I'm on my laptop laptop, wired to the network, I get about the same specs. The test I've done are with a 16 GB ISO, and with about 200 MB of RARs and I've tried avoiding the RAM-cache by reading different files than the ones I'm writing ( 10 GB). It feels like having less CPU cores is a lot more efficient, since the resource manager in Windows reports less CPU-usage. With 4 cores in VMware, CPU usage was 50-80%, with 1 core it was 25-60%. EDIT: HD ActiveTime was quite high on SSD so I moved the page file, disabled hibernate and enabled Win DiskCache both on SSD and RAID. This resulted in no real performance difference for one file, but if i transferred 2 files the total speed went up to 50 Mbytes/s vs ~40. The ActiveTime avg also went down a lot (to ~20%) but has now higher bursts. DiskIO is on ~ 30-35 Mbytes/s avgs, with ~100Mb bursts. Network is on 200-250Mbits/s with ~45 active TCP connections. Hardware Asus F2A85-M Pro A10-5700 16GB DDR3 1600 OCZ Vertex 2 128GB SSD 2x Generic 1tb 7200 RPM drives as RAID0 (in win7) Intel Gigabit Desktop CT Software Host OS: Win7 (SSD) VMware Worksation 9 (SSD) FreeNAS 8.3 VM (20GB VDisk on SSD) CPU: I've tried 1, 2 and 4 cores. Virtualisation engine, Preferred mode: Automatic 10,24Gb ram 50Gb SCSI VDisk on the RAID0, VDisk is formatted as ZFS and exposed through CIFS through FreeNAS. NIC Bridge, Replicate physical network state Below are two typical process print-outs while I'm transfering one file to the CIFS share. last pid: 2707; load averages: 0.60, 0.43, 0.24 up 0+00:07:05 00:34:26 32 processes: 2 running, 30 sleeping Mem: 101M Active, 53M Inact, 1620M Wired, 2188K Cache, 149M Buf, 8117M Free Swap: 4096M Total, 4096M Free PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND 2640 root 1 102 0 50164K 10364K RUN 0:25 25.98% smbd 1897 root 6 44 0 168M 74808K uwait 0:02 0.00% python last pid: 2746; load averages: 0.93, 0.60, 0.33 up 0+00:08:53 00:36:14 33 processes: 2 running, 31 sleeping Mem: 101M Active, 53M Inact, 4722M Wired, 2188K Cache, 152M Buf, 5015M Free Swap: 4096M Total, 4096M Free PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND 2640 root 1 76 0 50164K 10364K RUN 0:52 16.99% smbd 1897 root 6 44 0 168M 74816K uwait 0:02 0.00% python I'm sorry if my question isn't phrased right, I'm really bad at these kind of things, and it is the first time I post here at SU. I also appreciate any other suggestions to something, I could have missed.

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