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 >> > >> ************************************************ >> For Archives, RSS, to Unsubscribe, Subscribe or >> set Digest or Vacation mode use the below link: >> //www.freelists.org/list/thin >> Follow ThinList on Twitter >> http://twitter.com/thinlist >> ************************************************ >> > >