[THIN] Re: CPU - Explorer and Winlogon
- From: Mark Lee <marklee15@xxxxxxxxx>
- To: thin@xxxxxxxxxxxxx
- Date: Tue, 30 Jul 2002 20:38:10 +0100 (BST)
Tony,
does this happen to all of your servers ?
does this only happen to specific clients on specific
servers ?
have you done any sort of S/W upgrade on the servers ?
is the login script still running during this period
of High CPU usage ?
Mark
--- Tony Brookus <tbrookus@xxxxxxxxxxx> wrote: >
>
> Recently, I've had my published desktop users begin
> to complain about
> sluggishness and slowness. Essentially, they will be
> working along and
> suddenly everything freezes for 5-15 seconds. They
> can type and click during
> this time, but nothing will happen until after the
> server wakes up and
> catches up with them. After looking at it myself and
> experiencing it
> firsthand, I noticed that during this time the
> processor usage would spike
> to100% (the context switches/sec would also spike
> up). The culprit seemed to
> be the explorer.exe process of a user just logging
> in. I also noticed that
> every time a session was opened to the server (just
> sitting at the login
> prompt), winlogon.exe would eat up a bunch of
> processor. Generally the
> winlogon would use about 20% for about 10 seconds
> and then drop. The
> explorer.exe for a newly logged in user would rocket
> to 50-60% processor
> usage for about 10-15 seconds.
>
> Stats:
>
> - Windows NT 4.0 TSE SP6 (with the SRP installed)
>
> - Metaframe XP FR1 (though I have boxes still at 1.8
> SP3 that have the same
> problem)
>
> - Thin clients are NCD 300s (connecting to a
> published desktop)
>
> - Servers are mostly dual 400s with 2 gig of Ram
>
> So far with testing I haven't been able to figure
> out a whole lot. I'm
> actually building a test box from scratch and
> testing each time I log an
> application or change something. Only thing I've
> noticed is that having
> fewerfonts seems to help the winlogon processor
> usage.
>
> The only change that I can think of during this
> period was that we upgraded
> the firmware and client version of the NCD clients.
> However, I can duplicate
> this problem from a Citrix client on a PC.
>
> Has anyone seen this issue before? Can anyone
> suggest anything else to look
> at?
>
> Thanks,
>
> Tony
>
>
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