From: Evan Mann <emann@xxxxxxxxxxxxxxxxxxxxx>
Reply-To: thin@xxxxxxxxxxxxx
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Controlling Virtual Memory Usage
Date: Wed, 3 Jan 2007 08:35:03 -0500
Piggy backing onto the virtual memory usage. I have very high virtual
memory usage, even though I have 1 to 2 gigs of physical memory free. I
also have plenty of idle CPU but I have heavy complaints of a slow user
experience, such as Outlook keystrokes not appearing as they are typed.
I have plenty of bandwidth (10mbits upstream with only 3mbps used), and
the users complaining have plenty of up/down bandwidth available. Could
high virtual memory and paging cause this type of performance problems,
or would it be unrelated?
________________________________
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of Rick Mack
Sent: Wednesday, January 03, 2007 6:56 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Controlling Virtual Memory Usage
Hi Angela,
Sounds like a Java app :-(
Seriously, DLL remapping (memory optimization) probably won't give you a
lot of value in your scenario, but it'd be worth trying. Sure there's
the risk it will break something but it's dead easy to turn off without
rebooting to check. And there's enough tweaking possible to have memory
optimization and everything working as well.
However a product like Appsense performance manager that also does
memory working set trimming of backgrounded and idle processes will
probably work much better in your scenario. Try the eval version, or
better yet get your reseller to install an eval version and see how it
goes. It's not cheap but it's also a lot less expensive than more
servers.
Considering that paging activity is likely to be the bottleneck
regardless of the size of the pagfile(s), I'd suggest you stick with the
configuration you've got and try memory optimization and Appsense first.
It's possible to have multiple page files on separate partitions or even
the same partition but it'd probably make things worse for you rather
than better.
regards,
Rick
Ulrich Mack
Commander Australia
On 1/3/07, Angela Smith <angela_smith9@xxxxxxxxxxx> wrote:
Hi
Almost all my Windows 2003 STD / Presentation Server 4 servers
are running
out of Swap space. Hardware config is:
Dual 3.6Ghz
4Gb RAM
Swap size is 4095 - 4095 and it resides on the C: Drive. Main
process which
is using most of the Swap is Internet Explorer. Most of our
Published apps
are browser based so I have numerous IEXPLORE.EXE processes
eating all the
swap. Alot of the IEXPLORE.EXE processes use between 150Mb -
300Mb of VM.
Is there any way I can tweak the memory usage for IE to minimise
the amount
of Swap being used?
We have not enabled memory optimization in Citrix farm
properties as I read
it breaks certain applications? Is this the case? Will enabling
this assist
in this issue?
I was going to purchase extra servers to lighten the load but
most other
resource indicators are OK. I would prefer to tweak existing
servers if
possible. We have between 80 - 100 sessions per server (40 - 50
users per
box on average)
Any suggestions appreciated
Thanks
Angela
