[THIN] Re: XenApp 5 - 2008 x64 Slow
- From: "Jeremy \(J House Consulting\)" <jeremy@xxxxxxxxxxxxxxxxxxxx>
- To: <thin@xxxxxxxxxxxxx>
- Date: Thu, 6 Jan 2011 23:55:54 +0800
Hi Andy,
Is the lag/pause random or consistent. Ie. At 60 users logged in, will you
always see a lag selecting a cell in Excel?
What are your Redirector\Current Commands sitting at, as the value below is
missing?
I would also be checking %Page File Usage and Memory:Pages/Second counter.
There could be a process paging big time.
Known issues could be AV realtime scanning, Print Drivers, SMB V1.0 tuning.
Carl posted a heap of relevant hotfixes a couple of months ago.
http://support.microsoft.com/kb/983533
http://support.microsoft.com/kb/2028453
http://support.microsoft.com/kb/2028484
http://support.microsoft.com/kb/2059743
http://support.microsoft.com/kb/2065362
http://support.microsoft.com/kb/2213578
http://support.microsoft.com/kb/2231728
http://support.microsoft.com/kb/2251177
http://support.microsoft.com/kb/2261826
http://support.microsoft.com/kb/2272153
http://support.microsoft.com/kb/2281477
http://support.microsoft.com/kb/2300745
http://support.microsoft.com/kb/2414013
http://support.microsoft.com/kb/2444213
http://support.microsoft.com/kb/949538
http://support.microsoft.com/kb/955365
http://support.microsoft.com/kb/956438
http://support.microsoft.com/kb/958089
http://support.microsoft.com/kb/958596
http://support.microsoft.com/kb/960568
http://support.microsoft.com/kb/967113
http://support.microsoft.com/kb/967933
http://support.microsoft.com/kb/968074
http://support.microsoft.com/kb/968358
http://support.microsoft.com/kb/968930
http://support.microsoft.com/kb/968967
http://support.microsoft.com/kb/968995
http://support.microsoft.com/kb/969290
http://support.microsoft.com/kb/969837
http://support.microsoft.com/kb/969851
http://support.microsoft.com/kb/969940
http://support.microsoft.com/kb/969972
http://support.microsoft.com/kb/970603
http://support.microsoft.com/kb/970689
http://support.microsoft.com/kb/970840
http://support.microsoft.com/kb/970910
http://support.microsoft.com/kb/970911
http://support.microsoft.com/kb/970964
http://support.microsoft.com/kb/971253
http://support.microsoft.com/kb/971271
http://support.microsoft.com/kb/971338
http://support.microsoft.com/kb/971347
http://support.microsoft.com/kb/971370
http://support.microsoft.com/kb/971427
http://support.microsoft.com/kb/971438
http://support.microsoft.com/kb/971589
http://support.microsoft.com/kb/972495
http://support.microsoft.com/kb/972596
http://support.microsoft.com/kb/972600
http://support.microsoft.com/kb/972904
http://support.microsoft.com/kb/973062
http://support.microsoft.com/kb/973521
http://support.microsoft.com/kb/973554
http://support.microsoft.com/kb/973744
http://support.microsoft.com/kb/974103
http://support.microsoft.com/kb/974195
http://support.microsoft.com/kb/974266
http://support.microsoft.com/kb/974825
http://support.microsoft.com/kb/975848
http://support.microsoft.com/kb/976036
http://support.microsoft.com/kb/976038
http://support.microsoft.com/kb/976110
http://support.microsoft.com/kb/976520
http://support.microsoft.com/kb/976538
http://support.microsoft.com/kb/976674
http://support.microsoft.com/kb/977225
http://support.microsoft.com/kb/977263
http://support.microsoft.com/kb/977269
http://support.microsoft.com/kb/977389
http://support.microsoft.com/kb/977401
http://support.microsoft.com/kb/977541
http://support.microsoft.com/kb/977585
http://support.microsoft.com/kb/977611
http://support.microsoft.com/kb/977675
http://support.microsoft.com/kb/977686
http://support.microsoft.com/kb/978042
http://support.microsoft.com/kb/978829
http://support.microsoft.com/kb/978927
http://support.microsoft.com/kb/979241
http://support.microsoft.com/kb/979425
http://support.microsoft.com/kb/979548
http://support.microsoft.com/kb/979557
http://support.microsoft.com/kb/980248
http://support.microsoft.com/kb/980356
http://support.microsoft.com/kb/980380
http://support.microsoft.com/kb/980568
http://support.microsoft.com/kb/980663
http://support.microsoft.com/kb/980945
http://support.microsoft.com/kb/981062
http://support.microsoft.com/kb/981369
http://support.microsoft.com/kb/981462
http://support.microsoft.com/kb/981500
http://support.microsoft.com/kb/981704
http://support.microsoft.com/kb/981891
http://support.microsoft.com/kb/981964
http://support.microsoft.com/kb/982051
http://support.microsoft.com/kb/982303
http://support.microsoft.com/kb/982334
http://support.microsoft.com/kb/982416
http://support.microsoft.com/kb/982606
http://support.microsoft.com/kb/982931
http://support.microsoft.com/kb/983237
http://support.microsoft.com/kb/983385
http://support.microsoft.com/kb/983458
http://support.microsoft.com/kb/983533
Cheers,
Jeremy.
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf
Of Andy Friar
Sent: Thursday, 6 January 2011 11:10 PM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] XenApp 5 - 2008 x64 Slow
I'm have a problem with the following Windows 2008 SP2 Enterprise x64
XenApp 5 Enterprise R01
Boxes are Dell blade 8 core + HT 49Gb RAM
Local manadatory profiles with full Appsense suite utilising EM +
Personalisation service.
Desktop / My Documents / Favourites redirected to a Netapp Filer running
CIFS.
The more users that come onto the box the slower the machine gets.
@ 0-45 users the box is responsive, logon times are good but it still has
this apparent lag when accessing local apps
@ 50 the lag is getting worse sometimes freezes but always comes back.
@ 60 logon times are substantial, just selecting a cell in excel can take
30+ seconds.
Performance counters seem fine
14% processor time
25k context switches / sec no massive jumps
0 Processor queue length
99% disk idle
0 disk queue length
15-20k threads
0 Redirector\Current Commands
The only large one is system calls / sec which can be anywhere from 80k to
1.5m, I've cut down the apps but system calls are still high.
To me the server feels as if it has no cpu left, but given the resources
free it looks more like an i/o problem, I've tuned the smb with the
following
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Lanmanserver\Parameter
s]
"MaxWorkItems"=dword:00002000
"MaxMpxCt"=dword:00000800 (subsequently has
been changed to match the Netapp)
"MaxRawWorkItems"=dword:00000200
"MaxFreeConnections"=dword:00000064
"MinFreeConnections"=dword:00000020
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Lanmanworkstation\Para
meters]
"MaxCmds"=dword:00000800
[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session
Manager\Configuration Manager]
"RegistryLazyFlushInterval"=dword:0000003C
The NetApp filer has had cifs.max_mpx set to 1124 so I've subsequently
changed the citrix servers to match this number rather than the 2048
previously.
It's running around 30%cpu 2000 io/sec 98% cache hit.
Any suggestions on where else I might look into what is causing the
bottleneck?
Thanks
Andy
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