[THIN] Re: Troubleshooting slow/hanging on Servers

We just had this exact problem.  Ours turned out to be our backup server was configured for  Switched assisted load balancing when it was cross connected to two different switches.  This was causing Unicast broadcasts which just killed our Citrix environment when we backed up our profile server.  We thought the same thing that it was the LAN links until we hooked up a sniffer.  Best way to check is to look to see what your network utilization is normally on your servers and then look when you are having the problem.  If you have unicast broadcasts all of your servers on the subnet will show the same characteristics and similar spikes in network utilization.

 

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From: thin-bounce@freelists.org [mailto:thin-bounce@freelists.org] On Behalf Of Angela Smith
Sent: December 10, 2008 6:00 AM
To: thin@freelists.org
Subject: [THIN] Troubleshooting slow/hanging on Servers

 

Hi

I have a strange issue I was hoping you could assist with.  I have 2 issues I need guidance on:

1) Every Friday we get a huge influx of calls with users complaining about frozen/slow sessions.  There is nothing special about this day.  No scheduled Tasks run, the Citrix Presentation 4 servers are not running out of resources.  All our users connect in over a WAN from various sites.  Links are not being saturated and are lightly loaded.  What I would like to know is if there are any good utilities I can run on the Citrix server to see in detail whats going on.

2) I randomly get users telling me certain applications are slow but when I check the server performance nothing is happening.  TS Profiles are small, LAN utilisation is OK.  What tools can I run to troubleshoot these issues?

System is Windows 2003 running Presentation Server 4

Thanks
Angela

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