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This posting is provided "AS IS" with no warranties, and confers no rights. The opinions expressed within are my own and should not be attributed to any other Individual, Company or the one I work for. I just happen to be a classic techie who is passionate about getting things to work as they should do (and are sometimes advertised and marketed as being able to?) and when I can I drop notes here to help others falling in to the same traps that I have fallen in to. If this has helped then please pass it on - if you feel that I have commented in error or disagree then please feel free to discuss with me either publically or privately? Cheers, Dave
Thin Clients, VDI and Linux integration from the front lines.... Raw and sometimes unedited notes based on my experiences with VMware, Thin Clients, Linux etc.
Saw an email this morning that give us a heads up that Doug Brown from DABCC.com was doing a small presentation this afternoon prior to the Registration, so we thought we'd attend - this is my raw notes:

DABCC
Amex International Hotel - 16:30 6/6/2005
Network Troubleshooting and Premitech's Performance Guard 4.0


Slow Network/Performance - Question: Is perception reality? To the end user Perception *IS* Reality, deal with it !! Don't forget that ALL issues on the Desktop are magnafied by an order of magnitude on the TS/Citrix Server

Don't forget the Basics:
Check HDD's with chkdsk
Run defrag
Clean Temp dir's
Check space available

Name Resolution/DNS:
Verify DNS - Q330511

Anti-Virus:
Biggest cause of Context Switching, less users, less process's = less Context Switches
Make sure it's NOT monitoring ALL files - can cause extreme Slowdowns

(see my notes from just recently...)

Bad Hardware:
Verify Cables - can test OK but swap to make sure?
Verify NIC isn't dropping packets

Mismatch:
Duplex Mismatch
Hardcode **ALL** settings
DO THIS EVERYWHERE!!!!! Auto is for lazy bastards! <<(my comments)
If unsure, always check for bad packets, dropped packets, etc.

Carsten - then presented Performance Guard 4.0 from Premitech - very interesting product, but I'm going to need to check the pricing......

Slow Logon's:
Perception.....(this will always catch you if nothing else does...)
Move CMSTART.EXE from Windows Key to Login script? (Careful, this can backfire??)
Disable TimeZone support and enable TimeZone from Citrix Policy
Set Client Printers to be AutoCreated in background?
Client Drives - not done by default - enable only by Citrix Policy
Do the same with COM and LPT Ports...... you know the drill by now..... ;-))
Policies can be enforced by Allow or Deny - IP/User/Group/Client Name/Server, etc....
dabcc.com has a list of all TS related GPO's
UPHClean - word has it that it's not necessarily working on Server 2003 SP1......?
Look at HKLM\Sw\Ms\WinNT\CV\Winlogon\AppSetup = ???? These are the things that are being run at logon
HKCU\Sw\Ms\ ......run = Same deal
Don't assume!! = check the Login Script
Good idea to add %SystemRoot%\Fonts to the Path on all servers, this can help - Honest!
6.x ICA Clients can cause slow logons
2000 SP4 needs Q824309
Logons are related to the speed of your Data Collector!! Enable Write Back Cache


That's all for now - more tomorrow - maybe even pictures
All this time inside and it's 18degrees and Sunny!!
Posted on Sunday, June 12, 2005 12:34 AM Citrix | Back to top


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