[THIN] Re: Limits of Latency
- From: "Schack, Stephen" <sschack@xxxxxxxxxxxxx>
- To: "'thin@xxxxxxxxxxxxx'" <thin@xxxxxxxxxxxxx>
- Date: Thu, 25 Sep 2003 18:25:01 -0400
I think that the times need to be below. We have used Starband in the past
and it has yielded times of 200-300ms from Utah to Florida and it has worked
fine. If the times got over 300 or so we had problems.
-----Original Message-----
From: Jan Broucinek [mailto:tinybeetle@xxxxxxxx]
Sent: Thursday, September 25, 2003 5:01 PM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Limits of Latency
It depends on the app. In our experience, If the user is typing, the max
would be about 150-200ms. If it is a click and select check-boxes type app,
then perhaps as high as 400-600ms would be acceptable. Satellite will NEVER
be any better than 600ms due to the distance involved and the speed of
light.
Disconnects are generally caused by lost packets, you need to see how many
retries and packets you lose on the average connection.
----- Original Message -----
From: Christopher_Wilson@xxxxxxxxxxxxxx
<mailto:Christopher_Wilson@xxxxxxxxxxxxxx>
To: thin@xxxxxxxxxxxxx <mailto:thin@xxxxxxxxxxxxx>
Sent: Thursday, September 25, 2003 4:39 PM
Subject: [THIN] Limits of Latency
Hi, list.
Is there any documentation from Citrix or another source that sets a bound
on how much latency an ICA session will tolerate?
I have a few new locations that have recently been set up our WAN/Satellite
guy to use a DirectWay satellite connection to the internet then on into
Nfuse and my MF 1.8 farm. The problem is that these locations experience
frequent disconnects from ICA sessions to the point of rendering Citrix
unusable. (No problems surfing mind you.) A ping from them to us returns
with a latency of 850-1000ms. The best I remember hearing from this list
and elsewhere, latency beyond 300-400ms degrades performance and can cause
disconnects. Is this accurate? What is the max latency tolerance by your
experience?
Also, I have already tweaked the recommended ICA time-out and TCP
retransmission settings with no results for this problem. Is there any
other tweaking that might help?
Thanks in advance,
Christopher Wilson
Citrix Administrator
BJ Services Network Support
713.895.5681
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