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• About the External Graphics Card and CPU usage

  - by Balaji

  We are Rendering 16 live Streams at our client machine through one of our applications and the resolution of the video streams are as 4CIF/MPEG4/25FPS/4000Kbits. The configuration of the client machine is below. HP Desktop Machine: Microsoft Windows XP Intel (R) Core2 Duo CPU E8400 @ 3.00 GHz 2.99 GHz, 1.94 GB of RAM Intel (R) Q45/Q43 Series Express Chipset (Inbuild) The CPU usage of the machine peaks 99% for 16 streams. After some discussion, we had decided to install external graphics card to reduce the CPU usage. So that, we have tried following graphics cards. NVIDIA Quadro NVS 440 - 128 MB Radeon HD 4350 - 512 MB GDDR2 Redeon HD 4350 - 1GB DDR2 ASUS EAH 4350 Silent 1GB DDR2 But the performance wise there has been no difference - even a drop in performance. So, what is the purpose of these external graphics cards? Really it will reduce the CPU usage? What parameters have to check, if we want to reduce the CPU usage?

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• SQL Server backup and restore process

  - by Nai

  Just wondering what backup processes you guys have. I am currently operating a weekly full database backup with daily differential backups. My understanding is that with such a set up, the difference between Full recovery mode and Simple recovery mode is that with Full recovery mode, I will be able to use the transaction logs to rollback my DB to a specific point in time having applied the latest differential backup. Assuming that in my scenario, the last differential backup serves as my last and ultimate 'save point', I don't see a need to rollback my DB even further back using the logs. This brings me to my question: Is there any additional benefits to be had using a Full recovery mode for my current backup process?

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• phpredis + pconnect

  - by john smith

  I am using phpredis on my php based website. The webserver I am using is a the simplest apache apt-get installation, no configuration involved, as this is only a development environment. The issue I am facing is that basically, while using phpredis, there is no difference between "connect" and "pconnect" commands: they both create a new connection everytime, as I can see from the "info" command on redis-cli. Now, I am pretty sure it is because of the apache configuration and the fact that it probably (most likely) is a multi-threaded env, therefore can't enstablish a single connection. My question is basically for when I will turn into production: what would the best choice of a webserver be to avoid this problem? I remember using lighttpd with thousands of users and still get only a very few (like 2 or 3) connections on mongoDB. Any ideas? Thanks in advance.

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• VMWare Converter recommendations

  - by Tank Szuba

  I have two Ghost 14 backups of my machine. One for the machine fully configured with apps after and XP install and one of the last update before i re-imaged it (it's XP, I re-image about once every six months). I recently wanted to try simply using my initial image in a virtual environment to do my testing that generally causes me to need to re-image. I used the VMWare converter to convert the Ghost images to a virtual machine to use in Virtual box but they fail to properly boot. They get stuck after the bios loads and windows begins loading. If I power down the machine and refire it it will go to the error screen in windows that asks if you would like to boot to a different mode. none selected make any difference. What are some possible errors I should look for in the conversion process or in my settings for the converter?

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• Possible to write an implement of RAIDZ or RAIDZ2 for the MD driver in the Linux kernel?

  - by Pharaun

  I am curious on if it is possible to have an implement of RAIDZ and/or RAIDZ2 in the MD driver in the Linux kernel? From my understanding of it is that the RAIDZ version is equivalent to a RAID 5, and that a RAIDZ2 is equivalent to a RAID 6. The main difference is that the stripe size can be variable for RAIDZ as opposite to RAID 5/6 from my understanding, which helps performance. So what I am wondering is would it be possible to add this performance enhancing technique to RAID 5 & 6 in the MD driver in the kernel? Or is it tied too closely to how the ZFS works?

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• SQL Server tempdb size seems large, is this normal?

  - by Abe Miessler

  From what I understand the system database is used to hold temporary tables, intermediate results and other temporary information. On one of my database instances I have a tempdb that is seems very large (30GB). This database has not been modified (as in "last modified date" on the mdf file) in over a week. Is it normal to have the temp db remain that large for that long of a period? It seems to me that it should be updating fairly often and returning space that it is using fairly quickly... Am I way off here or is SQL Server doing something weird? FYI: This is a SharePoint 2010 database, not sure if that makes a difference.

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• How do UEFI and virtual machines relate to each other?

  - by Iterator

  I am trying to get my head around UEFI (Unified Extensible Firmware Interface) and it's not entirely clear to me how this affects virtual machines. Thus, there are three parts to this question: Is UEFI an advance in hardware support for virtualization? All other things being equal, would a machine with UEFI be more likely to run a virtual machine more efficiently than one without, or does UEFI cause any performance hits that negate any speed improvements from a virtual machine? Would the difference in execution be visible to code running in a virtual machine? (In theory, it shouldn't, but in practice?)

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• How to route traffic through a specific SOCKS proxy on a per-app basis?

  - by GJ.

  I'm running a certain desktop app (actually via AIR if it makes any difference) which doesn't have any built-in proxy configuration settings. I need to get all traffic just from this app directed through a secure SOCKS proxy. This implies I can't use the global network preferences, as these would affect many other apps. Is there any way to force all network communication through a given SOCKS proxy on a per-app basis? It would also be helpful to know if there's a way to perform such routing globally, based on specific IP addresses (as this could allow for some reasonable workaround).

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• Media player only works as administrator?

  - by Jeremy

  It seems I can only get Media Player 12 to work as administrator. If I run it normally (I am in the administrator group on my local PC) and right click on Music, and choose Manage Music Library. Media Player will sit and think for 5 or so seconds, then just not do anying, no dialog, no error. If I run as administator I can now get into the Manage Music Library dialog and add my a public folder containing my music. I've even tried granting everyone access to the public folder. One thing to note is that I have recently set up a domain controller and added my PC to the domain. With my local account I never noticed this problem, but I've since created a domain account and am now seeing this issue. I can't find much difference between the local and domain accounts - both are in the administrator group. Why would WMP require run as administrator? OS, Windows 7 64bit

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• Is there a relation between MS SQL Server client licenses and performance

  - by ramdaz

  I have a customer who has an .Net application running on MS SQL Server 2008, supplied by our company as a part of Microsoft Small Business Server. He started off with around 5 users, and hence we had not sold any extra licenses. Today there are 40 users, and there's performance degradation. An MS Consultant said that to improve performance you need to buy extra licenses. Is there a relationship. I am anyway planning to force the customer to buy extra licenses on legal grounds. But will there be any appreciable performance difference too? Advice welcome

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• Rail's FileStore with Linux Disk Caching or RAMdisk?

  - by Yo Ludke

  I have a Ruby on Rails application that stores it's catched files on the filesystem (Rails file-system cache). I was thinking about changing to memcached Store, but a short test shows it isn't a big difference in speed. From linuxatemyram.com I learned a bit about file caching. On the current machine there would be around 40..45GB RAM left which isn't needed for the application and which can be used to linux-disk-cache this rails file cache store. The disk is a RAID10 system with almost 120MB disk perfomance. How can I tell Linux to use free RAM more deliberately and not to be shy about using it? Do think it's necessary to adjust a sysyctl/.. value here, or would I have performance advantages to put the File Store root diretory on a ramdisk? (Loosing the cache during a reboot wouldn't be a problem)

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• Why using Acrobat 10 resaving a PDF file that was 4MB will become 3MB?

  - by Jian Lin

  I had some PDF files and just try to open it and do some highlighting using Acrobat 10 (also called Adode Reader X)... After highlighting, I save the file (using a different filename), and now the file change from 4MB to 3MB... is it just compression? Or making the images have lower clarity? (thought I cannot see any difference). What is the reason? If it is just compression, then why wasn't it done before, as winzip technology is quite mature more than even 10, 12 year ago.

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• How IBM Implement WebSphere Application Server SDK for Sun Solaris OS

  - by Eng Al-Rawabdeh

  I deploy the same application in IBM-WAS on different OS ( Windows , AIX and SUN-Solaris ) , SDK errors appeared on SDK for just Solaris OS , I refer some sites and it talk that the SDK on Solaris OS was build based on Sun SDK is it write ? so please I need to now if the IBM build the Solaris SDK from scratch or based on sun SDK ?? More Details : I Installed the same IBM WAS Application Server on two servers as the following : 1- Server1 - OS (AIX) 2- Server2 - OS ( Solaris) these two server on the same network and have the same configuration . Then I deploy Java Application ( X ) on both servers , the Application X was run on Server1 ( AIX ) without any problem but when I run the Application on Server 2 ( Solaris OS) I faced SDK issue . So I need to know what the difference between AIX WAS SDK and Solaris WAS SDK ?? Note : I try windows and it was run without any problem .

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• Does SQLIO lie when run from a Hyper-V guest on a VHD?

  - by ScottStonehouse

  SQLIO seems like a useful tool. I thought it would be interesting to try to measure the speed difference between a physical disk and a VHD. So I ran SQLIO on the Hyper-V host on the physical drive. Results seemed reasonable. Then I ran it from the guest to test the vhd (on the same physical disk). I expected it to be a bit slower. But instead it was way faster - like 0ms average latency. So I'm trying to learn something here. It seems like hyper-v is fooling SQLIO somehow but I don't understand it well enough to figure it out. It's a dynamic vhd, no snapshots or anything, and the vhd is the only file on the disk. The physical disk is actually a two SAS drive RAID 1.

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• From a quality perspective, what is better: Turning volume up in the software, in the OS, or on the speakers?

  - by Qqwy

  I kept thinking about this, and out of sheer curiosity, I decided to ask: If music isn't loud enough. How do I get the best quality?(Even if the difference is in fact so small it's neglectible) By making the music louder in my music player, game or other sound-producing software program. By raising the volume at the Operating System level (for instance, by clicking the 'speaker' icon on the windows bar and turning the volume up) By turning the volume up on the Amplifier or Speakers that are attached to your computer, and thus changing the volume on the 'hardware' Does programs vs OS matter? Does software vs. hardware matter? Thanks, Qqwy

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• RHEL raw device (over VMware RDM) performance issues

  - by jifa

  I'm running RHEL 5.3 over vSphere 4.0U1. I configured multiple LUNs on my NetApp (Fibre) storage, and added the RDM on two (Linux) VMs, using the Paravirtual SCSI adapter. One LUN is 100GB in size, successfully mapped to /dev/sdb on both VMs, 5 more are 500MB in size (mapped to /dev/sd{c-g}. I also created one partition per device. I have encountered two issues: First, writing directly to /dev/sdb1 gives me ~50MB/s, while any of the /dev/sd{c-g}1 gives me ~9MB/s. There is no difference in configuration of the LUNs apart from their size. I am wondering what causes this but this is not my main problem, as I would settle for 9 MB/s. I created raw devices using udev pretty straightforwardly: ACTION=="add", KERNEL=="sdb1", RUN+="/bin/raw /dev/raw/raw1 %N" per device Writing to any of the new raw devices dramatically slows down performance to just over 900KB/s. Can anyone point me in a helpful direction? Thanks in advance, -- jifa

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• Get-QADComputer -LdapFilter & NOT operator

  - by dboftlp

  I'm having issues excluding an OU from my LDAP filter $DaysAgo = (Get-Date).AddDays(-31) $ft = $DaysAgo.ToFileTime() Get-QADComputer -SizeLimit 0 -IncludeAllProperties -SearchRoot 'DC=My,DC=Domain,DC=Local' -LdapFilter "(&(objectcategory=computer)(lastLogonTimeStamp<=$ft) (!(ou:dn:=DisabledPCs))(|(operatingsystem=Windows 2000 Professional) (operatingSystem=Windows XP*)(operatingSystem=Windows 7*) (operatingSystem=Windows Vista*)(operatingsystem=Windows 2000 Server) (operatingsystem=Windows Server*)))" I'm looking to query for all Windows OS systems that haven't logged in to AD for more than 31 days & that are not already in the OU "DisabledPCs", which is where I'll be moving them to. When I run it now, I'm getting all the systems I'm looking for, including those in the "DisabledPCs" OU... I've tried several variations including: (&(!(ou:dn:=DisabledPCs))) As well as putting it in different locations in the filter (not that I thought it would make a difference, but I obviously don't know that...) Thanks in advance for any help, -dboftlp

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• Windows Virtual PC File Copy from host very slow

  - by Shiv Kumar

  I have a Windows 7 desktop on which I've installed Windows Virtual PC and an instance Windows 7. I also have virtual XP instance on the same host. The problem I am having is that copying files from the host to the virtual machine is dog slow. I'm talking 17KB/sec. The host machine has a gigbit NIC. While using the XP virtual instance to do the same I didn't notice a huge difference but on the Window 7 virtual instance the time is really slowing me down. Is there something I need to do (settings) to fix this? I've attached an image of the Resource monitor (of the virtual Windows 7 instance) that shows my network traffic going in bursts rather than relatively steady. The files are on a "public" folder on my host machine.

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• Outlook Replies with Inline Comments

  - by BillN

  I have a user who uses Word as his e-mail editor. Often when replying to an e-mail, he'll insert his comments into the body of the original e-mail. Since he is using Word as the editor, these show as [User Name] Comment Text in a contrasting color. However, some users see the comments in their Outlook, and others do not. I've tried Selecting/DeSelecting Word as the e-mail editor on the recipients, and it does not seem to make a difference. We are using Exchange 2007 with Outlook 2003 and Outlook 2007 clients along with a few Entourage Clients. There does not seem to be a pattern related to which client is used, but Entourage seems to be more likely to have the problem. TIA, Bill

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• Escape not idempotent in zsh's vi emulation?

  - by user1063042

  I have zsh configured to use vi keybindings. I've noticed some unexpected behavior with "escape". In vim (I haven't tested vanilla vi) if I hit escape twice, I can hit 'i' once to return to insert mode. In zsh if I happen to hit escape twice, hitting 'i' won't return me to insert mode, I have to hit it twice. Another example of this comes up in navigation. If I hit escape once, I can use '^' and '$' as expected. But if I've accidentally hit escape twice (or more) they fail to work until I return to insert mode and escape again. Do I somehow have zsh configured incorrectly, or is this just a known difference in zsh's vi emulation?

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• exported variable not persisted after script execution

  - by Daniele

  I'm facing a wierd issue. I've a vm with solaris 11, and trying to write some bash scripts. if, on the shell, I type : export TEST=aaa and subsequently run: set I correctly see a new environment variable named TEST whose value is aaa. If, however I do basically the same thing in a script. when the script terminates, I do not see the variable set. To make a concrete example, if in a file test.sh I have: #!/usr/bin/bash echo 1: $TEST #variable not defined yet, expect to print only 1: echo 2: $USER TEST=sss echo 3: $TEST export TEST echo 4: $TEST it prints: 1: 2: daniele 3: sss 4: sss and after its execution, TEST is not set in the shell. Am I missing something? I tried both to do export TEST=sss and the separate variable set/export with no difference.

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• PowerShell Remoting: No credentials are available in the security package

  - by TheSciz

  I'm trying to use the following script: $password = ConvertTo-SecureString "xxxx" -AsPlainText -Force $cred = New-Object System.Management.Automation.PSCredential("domain\Administrator", $password) $session = New-PSSession 192.168.xxx.xxx -Credential $cred Invoke-Command -Session $session -ScriptBlock { New-Cluster -Name "ClusterTest" -Node HOSTNAME } To remotely create a cluster (it's for testing purposes) on a Windows Server 2012 VM. I'm getting the following error: An error occurred while performing the operation. An error occurred while creating the cluster 'ClusterTest'. An error occurred creating cluster 'ClusterTest'. No credentials are available in the security package + CategoryInfo : NotSpecified: (:) [New-Cluster], ClusterCmdletException + FullyQualifiedErrorId : New-Cluster,Microsoft.FailoverClusters.PowerShell.NewClusterCommand All of my other remote commands (installing/making changes to DNS, DHCP, NPAS, GP, etc) work without an issue. Why is this one any different? The only difference is in the -ScriptBlock tag. Help!

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• Internet Explorer defaults to 64-bit version

  - by Tim Long

  My IE8 has suddenly started defaulting to the 64-bit version. I have no idea how or why this has happened, but I suspect it might be linked to the Browser Choice Screen that Microsoft was recently forced to display by EU law. However, many web sites will not display correctly in IE8 x64 (eg. sites that use Adobe Flash or Microsoft Silverlight). I have the 32-bit version of IE pinned to my taskbar and if I launch it manually, everything is fine. But when I click on a URL from another program and IE is not already running, then the 64-bit version gets launched. This really messes with programs like BBC iPlayer which rely heavily on Adbobe Air and Flash. So, how do I get IE8 32-bit version to be the default version again? I've tried using the "default programs" control panel and that doesn;t make any difference (in fact, it doesn't give the choice between x84 and x64 versions, it just lists "internet explorer").

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• How do I remove a URL from Google without having to have a Google E-mail Account

  - by PP

  Really simple question. I do not want a Google account. I just want Google to stop making requests every 2 minutes for a URL it should never have known about (apparently Google harvests URLs from search requests as well as private e-mails, not just from actual web pages). But when I search Google help for removing URLs it appears I have to use their "webmaster tools" which require logging into a GMail account! How do I tell Google not to index my URL without becoming a customer? Note: I already return 404 for the URLs in question using a rewrite rule - this appears to make zero difference to the crawler which continually attempts to fetch the page every 2 minutes.

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• Using "mv" or "ditto" to merge folders in OS X

  - by Sandro Dzneladze

  Used to the Windows way of doing I just found out OS X has no merge function – moving means replacing the folder. While this does make sense, I miss merging! I've two Wordpress directories, 1 contains default source and 2 contains worked version with plugins custom theme etc. I want to see difference between this two, so I'm putting it on SVN. Folder 1 is already up, now in theory I should simply merge contents of 2 with 1 by replacing everything with contents of 2 but leaving hidden SVN files untouched. Unfortunately OS X, when moving, replaces the folder so that my SVN client goes crazy and doesn't understand folder structure anymore. So, I believe my options are mv and ditto, but which one would you use in my situation and how? sudo mv wordpress /Documents/svn/wwwholiday/trunk/wordpress I want mv to overwrite everything it finds, but leave alone whatever is already inside folder 1 and has no duplicate in folder 2.

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