Citrix 2k3 Tuning Changes.

After much work, here are some common Citrix 2k3 tuning changes I often make:


HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\TCPIP\Parameters

• DWORD MaxUserPort and set to 65534 (new entry)
• DWORD TcpWindowSize and set to 65535
• DWORD MaxFreeTcbs and set to 72000 (new entry)
• DWORD MaxHashTableSize and set to 65536 (new entry)
• DWORD TcpTimedWaitDelay and set to 60 (new entry)
• DWORD KeepAliveTime 300000 (new entry)
• DWORD KeepAliveInterval 1000 (new entry)
• DWORD TcpMaxDataRetransmissions 10 (new entry)
• DWORD NumTcbTablePartitions 4 *<numcpu> (new entry)

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\TCPIP\Parameters\Interfaces\{OID}

• DWORD TcpAckFrequency 13 for gigE 5 for FE (new entry)

HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\XTEConfig

• DWord MaxThreads 255 (new entry)

HKEY_LOCAL_MACHINE\SYSTEM\Current Control Set\Control\File System

• DWORD SecondLevelDataCache <CPU CACHE SIZE> (new entry)

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management

• DWORD DisablePagingExecutive 1
• DWORD SecondLevelDataCache <CPU CACHE SIZE>
• DWORD IoPageLockLimit 65536 (new value)

HKEY_LOCAL_MACHINE\SOFTWARE\Adobe\Acrobat Reader\7.0\FeatureLockdown

• DWORD BEFIPrintMe 0
• DWORD bPurchaseAcro 0
• DWORD bUpdater 0
• DWORD bRegisterProduct 0
• DWORD bShowAdsAllow 0

HKEY_LOCAL_MACHINE\SOFTWARE\Adobe\Acrobat Reader\7.0\AdobeViewer

• DWORD EULA 0

HKEY_LOCAL_MACHINE\SOFTWARE\Adobe\Acrobat Reader\7.0\Updater

• DWORD bShowAutoUpdateConfDialog 0
• DWORD bShowNotifDialog 0
• DWORD iUpdateFrequency 0

HKEY_LOCAL_MACHINE\SOFTWARE\Adobe\Acrobat Reader\7.0\Originals

• DWORD bDisplaySplash 0

HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main

• DWORD Force Offscreen Composition 1

HKEY_CURRENT_USER\Software\Microsoft\Office\Common

• DWORD QMEnable 0

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters

• DWORD IRPStackSize 15 (new value)
• DWORD SizReqBuf 32768 (new value)
• DWORD MaxMpxCt 1024 (new value)
• DWORD MaxWorkItems 4096 (new value)

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Lanman\WorkStation\Paramters

• DWORD UtilizeNTCaching 0 (new value)

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\WinSatations\ICA-tcp\UserOveride\Control Panel\Desktop

• "AutoEndTasks" ="1"
• "MenuShowDelay"=10"
• "CursorBlinkRate"="-1"
• "DragFullWindows"="0"
• "WaitToKillAppTimeout"="20000"
• "SmoothScroll" = dword:0
• "Wallpaper" = "<advaniswall paper>"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\WinSatations\ICA-tcp\UserOveride\Control Panel\Desktop\WindowMetrics

• "MinAnimate"="0"

(NOTE these could also be RDP-tcp)
HEKY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer

• REG_SZ AlwaysUnloadDLL 1

HKEY_USERS\.DEFAULT\Control Panel\Desktop

• REG_SZ MenuShowDelay 10

HKEY_USERS\.DEFAULT\Software\Microsoft\Internet Explorer\Main

• DWORD "Force Offscreen Composition" 1 (new value)

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ICABrowser\Parameters

• REG_SZ DisabledTcpAddress <IPADDR OF INTERFACE TO DISABLE> (new value)

From some of the following:

http://support.microsoft.com/kb/q120642/
http://support.microsoft.com/kb/q158474/
http://support.microsoft.com/kb/324270/en-us
http://technet2.microsoft.com/WindowsServer/en/library/db56b4d4-a351-40d5-b6b1-998e9f6f41c91033.mspx?mfr=true
http://www.microsoft.com/technet/interopmigration/unix/sfu/perfnfs.mspx#EWF