It could be a couple of things…. Have you tried removing CSG from the equation and isolate if its WI or CSG? Is your CSG box running in a Virtual Machine? Do you have a LB in front of your WI and/or CSG box? How are you Applying the Ctx Policies for the SpeedScreen/multimedia.
Joe
From: thin-bounce@freelists.org [mailto:thin-bounce@freelists.org] On Behalf Of Chris Grecsek
Sent: Friday, July 18, 2008 10:24 AM
To: 'thin@freelists.org'
Subject: [THIN] Video Performance
We provide published desktops via Citrix/terminal services delivered via the internet. All users come in through the web interface/CSG via high speed, burstable (up to 100mb) connections. Most of the branch offices are <50 users so connectivity/maxxing out the pipe is not an issue. We don’t use any bandwidth restriction policies – users can use as much bandwidth as they’d like. We have bandwidth monitoring to look at all traffic and have our firewalls setup so that only Citrix traffic is using the burstable connection. Latency is sub 20ms and we have no packet loss.
Like everyone else using Citrix we’ve had challenges with video performance on the published desktop (Windows media player works great – Flash/other codecs, not so much). We had an interesting discovery today and I was curious if anyone could answer why/how this happens…when we connect to a published desktop via the WI/CSG (from one of our branch offices) video performance is bad. We ran a test today from within the datacenter where we connected to a published desktop, locally (from a laptop at the DC), using the Program Neighborhood as opposed to coming in over the WI/CSG and low and behold, video performance was excellent.
When we look at the amount of session bandwidth being used it’s nearly the same when coming in via the WI/CSG as it is when testing at the datacenter. So I guess the question is, is there something with the way the WI/CSG works that would be restricting/degrading the video performance (we ran performance counters on the WI/CSG and it doesn’t seem to be working very hard), is there a difference between using the Program Neighborhood verses the web client, etc.?
We’re on Citrix 4.5, latest rollups, latest version of the client, etc.
If anyone has any ideas, it would be much appreciated.
Thank you!
Chris
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chris grecsek | centered networks | t:415-294-7776 | f:415-294-7772 | chris@centerednetworks.com
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