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• What are the performance differences between PCI-Express x16 and x4

  - by Cestarian

  I have two PCI-Express 2.0 x16 slots on my motherboard, but one of them is actually just x4. For passing through my graphics card to a virtual machine I need to use both slots simultaneously and unfortunately, the easiest way for me to achieve that is putting the stronger card in the x4 slot (secondary slot; I need the stronger card to be in the secondary slot, not the primary). As such I am wondering what sort of noticable performance differences I can expect from using the x4 slot with a strong card as opposed to having it in the true x16 slot. Does it limit the performance so much that the strong card in the x4 slot will actually perform worse than the significantly weaker card in the x16 slot? (For spec comparison I am using a GTX-670 in the x4 slot and GTX-550-Ti in the x16 slot) What implications does this have?

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• Error installing Arch Linux

  - by Garethj94

  So, I am trying to install Arch Linux on my Acer Aspire 4830tg, but I keep running into problems. Some background knowledge, I am trying to install Arch off a usb stick and I got the iso image using bittorrent. I am also trying to install it alongside of Windows 8 (which is already installed). So when I boot into Arch linux I get this error: :: Mounting '/dev/disk/by-label/ARCH_201212' to 'run/archiso/bootmnt' Waiting 30 seconds for device /dev/disk/by-label/ARCH_201212 ... ERROR: '/dev/disk/by-label/ARCH_201212' device did not show up after 30 seconds... Falling back to interactive prompt You can try to fix the problem manually, log out when you are finished sh: can't access tty; job control turned off I know that it will work if I run it on a virtual machine but whenever I try to install it on my laptop I keep getting this error. And since you can't register for the Arch forums without a Arch terminal to run their captcha command I can't ask this on their forums.

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• Hosting 2 different SSL domains on the same IP [closed]

  - by Jim

  Possible Duplicate: Multiple SSL domains on the same IP address and same port? I have 2 different domains, domain1.com and domain2.net. Both require SSL certificates. I've got the certificates signed by a CA and now need to set them up on Apache. I've got a single IP address and have found a post here: SSL site not using the correct IP in Apache and Ubuntu that apparently works for ubuntu but I am on CentOS and have not had the same luck trying that configuration. When I try that configuration, Apache dies telling me that the port is already in use: (98)Address already in use: make_sock: could not bind to address 0.0.0.0:443 I had SSL working for a single domain but now that I've added the second, I get a browser warning about the cert not belonging to the domain. How do I get both domains to work using virtual host containers?

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• Connecting Small business network to Azure Site to Site VPN

  - by MarkKGreenway

  Would like to have connectivity between azure virtual machines and on LAN users. My current network has a Cisco ISA550 connected to the WAN (one Ethernet cable into the office the fiber transceiver is on a different floor)and any public servers can be one-to one NAT-ed to have a public and private IP. What is the best way to get a reliable connection. Between end users and the cloud? I want to know the preferred on site endpoint. Do the azure vm's have to have a local ip in the LAN subnet? (Right now 10.10.0.0/20 or 255.255.240.0 to give room if this is the case). If in purchased an asa550 would I put it behind or in front of the isa550. Would it be ahead or peer with the users switches? What is the best way to get a reliable connection. Between end users and the cloud servers?

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• Windows 7 Natively on Mac OS X Bootcamp, Airport Wifi Unable To Connect....

  - by Goober

  Hello! I am using a brand new MacBook Pro. I am running a copy of Windows 7 natively via bootcamp (No use of Virtual Machine Software at all). However the only way I can get Windows to connect to the internet is via ethernet, as opposed to the Macs Airport card picking up the wireless. It just refuses to connect, and gives me a limited access status. Any ideas!? I've run Windows XP natively via bootcamp and I had a few issues with the network constantly dropping out, however I blamed that on the drivers and the general shiteness of XP.... Help greatly appreciated.

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• Problems switching to QEMU control panel with -nographics

  - by tor

  It seems that the terminal does not recognise CTRL+ALT+2 when typed, so I don't know how to quit the QEMU emulation, or switch to the QEMU control panel. I am running Mac OSX Lion, and I type $ qemu-system-arm -M verdex -pflash flash.img -nographic -sd sdcard.img to start QEMU emulation of an ARM system in the Terminal. I learned from this site that typing CTRL+ALT+2 should work, but the only thing that happens to me, is that a "2" is printed on the command line of the virtual operating system. Any ideas on what could be wrong? Is this a Mac specific issue? (The same problem occurs in both terminal.app and iTerm2)

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• Centos iptables blocks after reboot

  - by bilal

  I have a Centos5 installation with kvm on my server. I am using nat portforwarding to ssh my virtual machines. I have several iptables rules and saved then in /etc/sysconfig/iptables. After reboot, I see all these rules when I type service iptables status but I am getting a connection refused error. After typing service iptables restart everything works. I don't understand, why do I need to restart iptables again? Doesn't it restart on reboot?

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• How to Host Multiple Domains / Web Sites on one IIS6 Server

  - by Josh Stodola

  I currently have an IIS6 server that hosts one web site/domain. I am developing another web site (completely separate) that I want to host on this same server. Both domains were purchased from GoDaddy. I believe I will need a server-side ISAPI rewrite filter to internally route the incoming requests based on the domain name. I plan to use Ionic's ISAPI Rewrite Filter to do this because it is free. I know how to install the ISAPI filter and apply it to a web site in IIS, but I have no clue how I am going to route the incoming requests correctly (based on the domain). Also, I don't know if it is wise to setup multiple "Web Sites" or "Virtual Directories". I am thinking that this will depend on how the configured. How should I go about getting this accomplished?

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• Hyper-V Manager right clicking on remote VM causes MMC error

  - by Greg Bray

  I have a Windows 2008 R2 Enterprise Server with SP1 that I log into and use to manage virtual machines running on multiple HyperV servers on our domain. Sometimes when I right click on a remote VM the HyperV Manager will crash and display the following error message: If I use the Actions menu on the lower right it works just fine, but for some reason right clicking cause MMC to stop working. Is there any way to fix this issue? Here are the full details of the error message. Description: Stopped working Problem signature: Problem Event Name: CLR20r3 Problem Signature 01: mmc.exe Problem Signature 02: 6.1.7600.16385 Problem Signature 03: 4a5bc808 Problem Signature 04: Microsoft.Virtualization.Client Problem Signature 05: 6.1.0.0 Problem Signature 06: 4ce7c9e3 Problem Signature 07: 342 Problem Signature 08: 1f Problem Signature 09: System.OverflowException OS Version: 6.1.7601.2.1.0.274.10 Locale ID: 1033 Read our privacy statement online: http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0409 If the online privacy statement is not available, please read our privacy statement offline: C:\Windows\system32\en-US\erofflps.txt

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• No dual cpu support for VirtualBox with a CPU that doesn't support multicore?

  - by djangofan

  With VMWare it works fine and I can run multiple cores on a VMWare image. With Sun VirtualBox I can only run 1 cpu on a image. Its annoying. Why does Sun Virtualbox not work the same as VMWare in this respect?? My CPU is: XEON 3.00GHz Intel 90nm 2MBCache QUAD CPU x14 Socket 604 mPGA Family 15 Model 4(04) Stepping 3 Revision 05 MMX SSE3 XD SIV.exe tells me: No virtual machine extensions x86 with 64-bit support NO IA64 support MPS but with NO MCP 2 physical processors, 2 cores, 4 logical processors

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• Website with large number of users keeps going down due to memory leaks:Tomcat6 and Java 6

  - by user1766478

  We host many websites on one of our two virtual servers. We use tomcat 6 and Java 6. It is an MVC model with a hibernate like layer. The problem is, one of our biggest clients with the most number of members, keeps crashing the server every 6-8 hours(precisely in the mornings when most members login) We have been having this issue for 4 days now. Trying to figure out the problem but we suspect memory leaks. Any suggestions?

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• Help me set up ssl.conf for multiple domains (name-based vhosts in ssl.conf?)

  - by mmattax

  In my httpd.conf: If I have my virtual host configured as: NameVirtualHost *:80 <VirtualHost *:80 ServerName foo.com ServerAlias www.foo.com Include conf.d/foo.conf </VirtualHost <VirtualHost *:80 ServerName bar.com ServerAlias www.bar.com Include conf.d/bar.conf </VirtualHost Can I get by with a single domain SSL certificate or must I purchase a wildcard SSL certificate to handle the www subdomain? I am now trying to configure the ssl.conf file, can I use name-based vhosts in my ssl.conf file like this: NameVirtualHost *:443 <VirtualHost *:443 ServerName foo.com ServerAlias www.foo.com ... Include conf.d/foo.conf </VirtualHost <VirtualHost *:443 ServerName bar.com ServerAlias www.bar.com ... Include conf.d/bar.conf </VirtualHost or do I need IP based vhosts? If this is possible, what kind of cert would I need in order to do this?

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• How can I prevent my domain controller doing forward lookups for remote users?

  - by markmnl

  I have a Windows Server 2003 server in the office. I VPN into the LAN remotely. My VPN has a virtual NIC with the Windows Server as the primary DNS since it is a domain controller. When connected to the VPN and I do an nslookup or simply browse the web the DNS from the VPN provides the DNS answers. I believe this is because it has DNS forwarders, so queries it can't answer are forwarded and then it relays the answer. This is the desired behavior for workstations in the office (they should query their domain controller first); however for remote VPN users this is not desirable. I do not want my remote office's server to answer DNS queries it is not the authority of (which happens to be 192.168.x.x). Is there any way I can configure this?

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• ICS as guest in Ubuntu 12.04 host

  - by oshirowanen

  I have installed Android as per this guide as a guess os via VirtualBox: http://www.android-x86.org/documents/virtualboxhowto Using the following ISO: android-x86-4.0-RC1-eeepc.iso But I am unable to connect to the internet from within the android virtual machine. The host OS is Ubuntu 12.04 where the internet works fine. I have internet access via a usb wireless connection to the home router. All this is fine. If I install Ubuntu 12.04 as a guest, where the host is also Ubuntu 12.04. The guest os'es internet works fine out of the box. But for some reason, I can't get the above androids internet to work out of the box as the guest os. Anyone know what I am doing wrong?

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• Can not change to a static IP in Fedora 19

  - by user196272

  Im having a bit of a weird situation. Ive installed Fedora Linux 19 onto a virtual machine with no GUI. initially eth0 does not show up when I perform ifconfig. when I run dmesg | grep eth I see the adapter but it says it changed names to p2p1. Once I perform the ifconfig p2p1 up command it shows up. Now when I try to edit the /etc/sysconfig/network-scripts/ifcfg-p2p1, it does not exist. the only scripts that are there lo and enp0s3. If I try to create the ifcfg-p2p1 file with the correct settings, I can not restart the network service. I tried editing the enp0s3 file, but that did not work. Im fairly new to linux and not sure what else to put in here, so if you need any more information just let me know and Ill put it in here.

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• Raid HDD Boot up

  - by user234695

  My server is Power Edge 1950 running server 2008 32Bit, using 3 Physical SAS HDD as a Virtual 2 Disk configured for RAID5, with partition of C drive as OS and D drive as Data. Planning to format and install Server 2008 R2 64Bit so I insert a New Physical disk and configured as RAID5 and clone the C drive and D drive to the new hard disk. Now I need to test that the new hard disk is able to boot windows and work as expected. How do I test, I am not able to boot the windows by choosing the new harddisk, the bios show only the existing HDD, not the new one. Also, if I remove the old three hard disk, and leave the new harddisk and then am I able to boot the device, if I do this does my existing RAID5 configuration and data on the hard disk still remain.

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• VirtualBox / Ubuntu 10.04 Server

  - by SevenCentral

  I created a virtual machine using VirtualBox 3.2 and Ubuntu Server 10.04 x64. Everything works fine. I logged in. I mounted the VBoxGuestAdditions.iso file. However, I can't for the life of me find where in the operating system this was done so I can get the additions installed. I've tried /media, /cdrom, /mnt, etc... I'm obviously new at this. Can someone help figure out how to install the guest additions and how to locate the mounted file? Thanks.

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• Apache, Django with mod_wsgi, and large request buffering

  - by Mukul

  In my setup of Apache 2.2 MPM worker and Django 1.3 with mod_wsgi 2.8, I need to support large POST request payloads. The problem is that when there are many such simultaneous requests, Apache uses up all the memory in the system and then crashes. It seems that Apache is buffering the requests completely in memory before executing the WSGI handler and passing it the request. Is there any way to control request buffering in Apache? The log shows the following error whenever the crash happens: [Wed Jun 29 18:35:27 2011] [error] cgid daemon process died, restarting Here's my virtual host's configuration: <VirtualHost *:8080> ServerName example.com ErrorLog /var/log/apache2/error.log WSGIScriptAlias / <path to django.wsgi> WSGIPassAuthorization on WSGIDaemonProcess example.com WSGIProcessGroup example.com XSendFileAllowAbove on XSendFile on </VirtualHost>

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• Cisco FC SAN switch decision

  - by Chopper3

  I've got to buy a bunch of FC SAN switches in the next week or so, I have to, and want to, buy Cisco MDSs. Servers are HP BL490c G6's in C7000 chassis with Virtual-Connect Flex-10 ethernet interconnects and VC FC interconnects (Emulex HBAs btw), all running ESX 3.5U4 (for now). I think I've only really got two choices; MDS 9509's with dual-supervisors with a single 48-port 4Gb FC card MDS 9222i's with single supervisor and the built-in 18-FC-port/4-GigE-FCIP-port option Both have the same functionality (I think, buying the enterprise licence btw), both have plenty enough performance and adequate ports for now and the next three years. The 9222i's are about 55% the price of the 9509's - logic says get the 'i's but will I really miss the dual-supervisors? I've got lots of 9509's with dual-supervisors that I'm very happy with but I'm not sure I've every benefitted from the dual-sups in the past and they are nearly twice the price - but if I don't buy them and miss them I can't retrofit them later. What are your thoughts?

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• does heartbeat v3 support same resource agent types of pacemaker?

  - by Emre He

  As we know, Pacemaker supports three types of Resource Agents, ? LSB Resource Agents, ? OCF Resource Agents, ? legacy Heartbeat Resource Agents http://www.linux-ha.org/wiki/Resource_Agents does heartbeat v3 support above 3 types resource agent? or it only support LSB and legacy heartbeat resource agents? because we have only virtual ip and one service need to switch in ha cluster, so we decide not involve pacemaker, so we come to this question, for example we cannot monitor the application service by heartbeat, heartbeat only can handle to start it on active node. thanks, Emre

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• Install both 64-bit and 32-bit JDK on a 64-bit windows?

  - by Toperi

  I need to use a java library that uses native code requiring a 32-bit jvm. I have 64-bit windows with 64-bit eclipse installed with 64-bit JDK7. In order to develop with it, do I need to have 32-bit JDK? Or would the JRE suffice? If it is possible to install both, what is the naming convention you use for the installation directory for the 32-bit jre or jdk? I have heard rumors there is a performance hit on virtual memory if both are installed, is this true?

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• How to access my local host server from internet

  - by rahul.p.33

  How to access my local host server from internet have installed WAMP server on my Windows XP, And i had created a index.php file in my root folder, and i assigned a virtual name to my localhost. eg: earlier i accessed my index.php via: Code: http:// localhost/ index.php but now i can access like : Code: http: //www. mysite. com/index.php but the problem is that i can access this from my computer only.. how can i use it from internet.. please help me.... Thanks.

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• How to access my local host server from internet

  - by rahul.p.33

  How to access my local host server from internet have installed WAMP server on my Windows XP, And i had created a index.php file in my root folder, and i assigned a virtual name to my localhost. eg: earlier i accessed my index.php via: Code: http:// localhost/ index.php but now i can access like : Code: http: //www. mysite. com/index.php but the problem is that i can access this from my computer only.. how can i use it from internet.. please help me.... Thanks.

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• Unable to create context rendering error when run OpenGL application

  - by Rodnower

  Hello, I try to run Mesa gears example and I get following error: freeglut (./gears): Unable to create direct context rendering for window 'Gears' This may hurt performance. though the application runs successfully, but I guess that in future I will have much problems with productivity. I run Linux CentOS 5 on WMvare 7. Mesa's version is 6.5 Relevant output of lspci -v gives: 00:0f.0 VGA compatible controller: VMware SVGA II Adapter (prog-if 00 [VGA controller]) Subsystem: VMware SVGA II Adapter Flags: bus master, medium devsel, latency 64, IRQ 9 I/O ports at 10d0 [size=16] Memory at d0000000 (32-bit, non-prefetchable) [size=128M] Memory at d8000000 (32-bit, non-prefetchable) [size=8M] [virtual] Expansion ROM at 30000000 [disabled] [size=32K] Capabilities: [40] Vendor Specific Information Any one have idea? There is driver of vmvare for CentOS? Thank you for ahead.

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• Is Hyper-V Server 2008 working on Intel's Atom platform

  - by Josip Medved

  Did anybody try to install Hyper-V on Intel Atom platform? Hyper-V requires: x64 compatible processor with Intel VT or AMD-V technology enabled Hardware Data Execution Prevention (DEP) It seems that both requirements are satisfied with Atom as processor. However, I wonder whether there is some blocking issue (e.g. BIOS that does not support it) since all Atom motherboards I checked had quite old north/south-bridge. My intentions are to run two low-requirements virtual machines (embedded Linux), so performance should not be an issue.

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