[THIN] Re: High CPU at the end client when using published apps f rom MPS 3.0
- From: Pedigo Michael-G17060 <Michael.Pedigo@xxxxxxxxxxxx>
- To: "'thin@xxxxxxxxxxxxx'" <thin@xxxxxxxxxxxxx>
- Date: Thu, 9 Sep 2004 10:05:06 -0500
Rick,
I see what you are saying....but one app I support is a dos based UNIX emulator
app which will require scrolling at times...
just doing a dir of a large directory will cause the problem....
If I do it local it will take 3-5 seconds to scroll the 60K text file
If I do it on MPS 3.0 server it can take anywhere from 10 seconds to a minute
or more because it pegs the CPU on the LOCAL PC which causes PC and Citirx
performance to stink.
If I do the same operation from a XP server....it is faster and doesn't peg the
CPU.....In other words they changed something in 3.0 that makes it
worse....unacceptable in my judgment. Before I open an incident with them...I
wanted to see if others see the issue and for you veteran Citirx experts out
there....if you think Citirx would even care to improve it....I don't want to
waste my boss's $400 on something Citrix wouldn't fix anyway.
Thanks,
Mike
-----Original Message-----
From: Rick Mack [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Rick Mack
Sent: Tuesday, September 07, 2004 8:44 PM
To: thin@xxxxxxxxxxxxx
Subject: RE: [THIN] High CPU at the end client when using published apps from
MPS 3.0
Hi Mike,
I guess you mean just listing the file in a command window, that's actually
pretty cpu intensive because the "DOS" window has no smart font handling
capabilities. It doesn't use windows APIs or anything, just displays bitmaps.
Try something simple. On your local machine:
c:
cd \
dir /s > dirs.txt
(now start the task manager)
type dirs.txt
(watch the CPU utilization go to 100% while the text is scrolling in the DOS
window)
And that's local.
The ICA client is limited in what it can do about handling a scrolling bitmap
so the end result is the same. Since the video virtual channel is basically
running at a higher prioroty than anything else, keyboard and mouse input is
backgrounded (ie doesn't respond in a timely fashion) while the bitmap
scrolling is going on.
Just get your users to use a text editor. While notepad is pretty darn stupid
(especially when doing a global search and replace on a large file), there are
freeware editors around like "TheGun (Grown Up Notepad)" which do a pretty good
job.
regards,
Rick
Ulrich Mack
Volante Systems
_____
From: thin-bounce@xxxxxxxxxxxxx on behalf of Pedigo Michael-G17060
Sent: Wed 8/09/2004 5:34 AM
To: 'thin@xxxxxxxxxxxxx'
Subject: [THIN] High CPU at the end client when using published apps from MPS
3.0
Hi,
Has anybody else seen this???
When running a simple command window and cat the file (60K text file).....CPU
on the client will max out at 100% All MPS 3.0 servers does this (3)....
If a user is running multiple applications they start freezing and general
performance stinks.....
Can anybody else reproduce this?
I can run the same apps and cat the same file on my Metaframe XP farm and I can
see CPU shoot up, but it appears it is correctly managed and never consumes
100% and it runs much faster on 550MHz processors vs 3.0GHz
Any advice or at least acknowledgement others can or can't see this issue would
be greatly appreciated.
Thanks,
Mike
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