[THIN] Re: PS4.0 session freezes

  • From: Matt Kosht <matt.kosht@xxxxxxxxx>
  • To: thin@xxxxxxxxxxxxx
  • Date: Mon, 17 Jan 2011 21:27:53 -0500

Thanks very much Andy. Judging by the path used in this cmd script this is
for a Windows 2008 server, but I can easily mod it for Windows 2003R2 as
well.
-Matt

On Sat, Jan 15, 2011 at 3:33 AM, Andy Friar <Andy.Friar@xxxxxxxxxxx> wrote:

>  Something we do on reboot
>
>
>
> @Echo off
>
> set SearchDir="C:\ProgramData\Microsoft\Group Policy\History"
>
> set tempdir=%TEMP%
>
> set tempfile=%tempdir%\GPOHistory.txt
>
>
>
> cd %SearchDir%
>
>
>
> dir %SearchDir% /b /ad > %tempfile%
>
>
>
> for /F "tokens=*" %%i in (%tempfile%) do rd /S /Q "%%i"
>
>
>
> Rgds
>
>
>
> Andy
>
>
>
>
>
> *From:* thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] *On
> Behalf Of *Matt Kosht
> *Sent:* 14 January 2011 17:37
> *To:* thin@xxxxxxxxxxxxx
> *Subject:* [THIN] Re: PS4.0 session freezes
>
>
>
>
>
> After much delay it was discovered that Client Side Preferences (CSP)
>  history had reached such a size as to impact performance in a large way.
> Issue was isolated to winlogon.exe take 1 core or more to 100% util.  MS had
> us apply http://support.microsoft.com/kb/974266 which didn't seem to fix
> the issue (moves CSP processing to background vs. foreground). Further
> digging found that winlogon.exe was very busy enumerating C:\Documents and
> Settings\All Users\Application Data\Microsoft\Group Policy\History\ folder
> contents.  Affected servers had 5,000 to 6,000 folders and 2,000 to 3,000
> files that got accessed everytime a refresh happened.  Simply renaming the
> history folder forced it to rebuild to less than 200 files and 500 folders.
> This resolved the issue and from posts I have seen cleaning up this folder
> on a schedule is the long term fix to this as it will only balloon again
> over time.
>
>
>
> -Matt
>
> On Mon, Dec 13, 2010 at 4:23 PM, Matt Kosht <matt.kosht@xxxxxxxxx> wrote:
>
> Yes quite certain. Especially when you consider I get the issue with a LAN
> attached client.
>
> I did run across this KB http://support.microsoft.com/kb/324446 and I did
> confirm I can get the issue in RDP as well as ICA sessions.  The term
> servers use a file server to store redirected My Docs, roaming profiles, and
> Desktop. The issue was noticed after we added redirected Desktops. My
> unproven hunch is our file server is what is causing the freeze ups and
> hopefully making the lanmanserver changes recommended in the KB article on
> our term and file servers resolve the issue.
>
>
>
>
> On Mon, Dec 13, 2010 at 3:14 PM, Pat Coughlin <strangedog@xxxxxxxxx>
> wrote:
>
> Almost sounds like a network problem.  Do you have enough bandwidth to
> support both the user traffic and what the applications are consuming?
>
> Pat Coughlin
> Citrix Goon
>
>
> On 12/13/10, Matt Kosht <matt.kosht@xxxxxxxxx> wrote:
> > I have an older farm that under load will exhibit an issue of the Citrix
> ICA
> > session not accepting input and not changing the display save for the
> mouse
> > moving. This seems to happen on different servers (physical and virtual
> > ones), LAN or WAN attached clients, and doesn't seem to be related to the
> > performance of the Citrix server itself (disk/cpu/net seem fine from perf
> > metrics) I look at).  There are no events in the event log that give me
> much
> > to go on either. Any suggestions on where to look for a root cause to
> this
> > issue?
> > -Matt
> >
>
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