[THIN] Re: XenServer Slowdown

  • From: "James Scanlon" <James.Scanlon@xxxxxxxxxxxxxxxx>
  • To: <thin@xxxxxxxxxxxxx>
  • Date: Wed, 17 Nov 2010 16:12:28 -0000

Mandatory profile 'share' on a Physical HP hardware 4000 NAS server
share (4yrs old?). (1TB DISK - 15K SCSI) - 400 something users accessing
this server
Specific user keys hived out to user home drive using appsense EM
Users home drive 'H:\' stored on new VMWARE server - 100GB LUN (all on
SAN) <-- registries hived out here...H:\profile\xxxx


From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of Raffensberger, Stephen D
Sent: 17 November 2010 15:54
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: XenServer Slowdown



How are you handling user profiles?



Steve Raffensberger

Produban US



From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of James Scanlon
Sent: Wednesday, November 17, 2010 10:45 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: XenServer Slowdown



(sorry about last unfinished email went to save to get more info and
clicked send - sigh)


We are having speed issues with our XenServers 

*       Brand New builds 
*       Deployed with Altiris 
*       Xenserver 5.0 
*       Windows 2008 Standard 64bit 
*       36GB RAM 
*       Dual CPU, 8 Core processors X5560 2.80Ghz 
*       Appsense EM and PM (with citrix CPU and memory management
*       Sophos AV 
*       HP Hardware DL380 G6 with teamed nics 

For normal operation we are getting 25 second login time (to desktop)


After approx 30 users (or 2 days without a reboot), the performance
drops to 1-1.5 minutes just to log in, everything sluggish, cant open
task manager even though multiple taskman icons appear in systray.

No performance issues on the systems themselves, all sitting around %25
utilised. (CPU, MEM, DISK etc)


So far:

We have disabled Sophos, no result

disabled Appsense, no result

turned on VT instructions for CPU in the BIOS, no result

turn off TCP offloading for the NICS

HW firmware for Servers / patching (latest PSP)
Software for OS and apps / patching 



Any one seen anything like this already? apart now from bringing up a VM
host to eliminate hardware or a full manual rebuild and testing at each
stage of the build process - we are starting to run out of 'obvious

ANY assistance and advice greatly appreciated!









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