RDP session running flash consuming all available bandwidth, in the Terminal Services forum on BrianMadden.com
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RDP session running flash consuming all available bandwidth, in the Terminal Services forum on BrianMadden.com

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clark_nick Posted: Mon, Jan 16 2012 12:49 PM

Hi,
I have a situation where some RDP sessions are using up all available bandwidth causing line saturation, time outs and ping responses between 100 and 3000 ms.
RDP client is either 6.1 or 7. IE version is 8. Problem occurs when any users browses a web site with flash content.
Adobe flash player 11 Active X (11.0.1.152).
Is there any way in which i can control how much bandwidth an individual RDP connection can use? i.e. some kind of maximum throttle.

Regards,

Nick
 

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as far as i'm aware, your only option is to either reduce color depth or use QOS on your routers. or you can replace your RDP sessions with citrix and it won't be nearly as bad.

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I think your problem is not bandwith. I think its CPU. RDP is a streaming protocol so if memory serves me, it takes 56k bandwith. Flash is a real CPU hog. Matter of fact, our most heavy application is IE. Not to mention, users park their browsers on flash sites and they sit there all day. Some of our users have 10-15 IE tabs open. Did you run extensive diagnostics with task manager? This should reveal something, how much memory is being used by each process, how much cpu is being used by each process.

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Hi Aristotle,

Unfortunately the problem is 100% with the bandwidth. I can track both IP source and destination IP address and bandwidth being used by a session. Therefore i know they are thin clients connecting to our RDP servers and the % of line saturation caused by the 'rouge' session on our line. Issue is intermittent and appears to be irrespective of user, thin client device (we have a few models) or RDS server connected to in the farm. The actual server themselves are of a pretty decent spec and SCOM is not reporting any issues server side.

Any help would be great - this is killing me atm.

 

Regards,

Nick

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