[THIN] Re: MultiUserEnabled setting on Windows 2003 Terminal Servers
- From: Jeremy Saunders <jeremy.saunders@xxxxxxxxxxx>
- To: thin@xxxxxxxxxxxxx
- Date: Mon, 2 Jun 2008 10:27:45 +0800
Thanks for that clarification Rick :)
Cheers,
Jeremy.
From: "Rick Mack" <ulrich.mack@xxxxxxxxx>
To: thin@xxxxxxxxxxxxx
Date: 01/06/2008 01:43 AM
Subject: [THIN] Re: MultiUserEnabled setting on Windows 2003 Terminal
Servers
Hi Jeremy,
Multiuserenabled simply increases the number of file handles available per
user session. There is some additional file-server end buffer memory
overhead but generally not enough to cause problems. However it doesn't
provide any SMB tuning per se.
I've never seen current commands jumping around either, even if that's
what's supposed to happen :-)
I always assumed that perfmon wasn't handling the copunters properly, or
the kernel wasn't updating them frequently enough.
Anyway, current commands above about 120 is cause for some concern because
it means the file server is definitely under-performing. Over 200 and
you're getting to the point where you could be starting to see pauses.
However there are also a number of other possibilities for pauses including
login/logout overheads, RAID caching on the TSD server etc.
If the pauses are due to SMB bottlenecking, then concentrating your efforts
on file server performance has to be your priority. In particular, if the
network volumes are SAN-based, check out SAN performance.
regards,
Rick
--
Ulrich Mack
Quest Software
Provision Networks Division
On 5/30/08, Jeremy Saunders <jeremy.saunders@xxxxxxxxxxx> wrote:
Hi Steve,
Wow....I've never seen it spike like that before, and never seen it go
much
over 100 before. Once under load, all my farms sit on a constant 40 to
60.
This is why I was alarmed when seeing a figure over 200. The customer is
getting a lot of pauses, hence the reason why I'm doing a performance
audit. The SMB tuning has not been done. But when I highlight the Current
Commands queue as being of concern, the customer is brushing that aside
due
to the MultiUserEnabled setting. I've had several conversations with
others
on this, and I've concluded that MultiUserEnabled or not, this shouldn't
change the outstanding Current Commands queue. If anything, it should
make
it slightly more efficient, as it has more open sessions to the back-end
file servers. Interesting one!
Cheers.
Kind regards,
Jeremy Saunders
Senior Technical Specialist
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