[THIN] Re: Citrix on VMWare
- From: "Ron Oglesby" <roglesby@xxxxxxxxxxxx>
- To: <thin@xxxxxxxxxxxxx>
- Date: Mon, 9 May 2005 19:43:14 -0500
Well it depends.
I run a one-off server build on it with low utilization right now. I
also run my prod WI/CSG on it.
Now I just did a presentation on this at Briforum and the real key is
what your bottleneck is on Phys machines. If you run into virtual
address space limitations on the OS but have very low Proc and mem
utilization you probably have a real good fit. Now if you run into
limitations of physical resources, those limitations will show up a
little earlier in a VM environment.
You have to remember the idea, the processor time is being scheduled,
and while it is a very light overhead it is still an overhead.
Now the next thing I can say is people running into OS limits have great
success, People with crappy apps (Ie lots of ring 0 system calls,
context switches etc) can experience a performance reduction. I had one
client that with everything set per VMware recommendations and pegging
VMs to single procs still lost 40% of their users per proc when compared
to physical machines. This was a result of the applications being run.
If you have really well behaved/written apps you can have better
results.
Now, once you get beyond those initial performance things there are
other reasons for deploying Citrix (or any server) on VM architecture,
but that's another thread.
Ron
Ron Oglesby
Director of Technical Architecture
RapidApp, Chicago
Office: 312 372 7188
Mobile: 815 325 7618
email: roglesby@xxxxxxxxxxxx
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of msemon@xxxxxxx
Sent: Friday, May 06, 2005 10:39 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Citrix on VMWare
I am not sure I would put this on your primary production farm. We saw
some
performance issues with a client who had installed on primary production
farm. You might look at secondary silo. Also, check out Ron's book on
VMWare ESX server which should be in book stores any day.
Mike
Original Message:
-----------------
From: Bermuda Boy phits_right@xxxxxxxxxxx
Date: Fri, 6 May 2005 10:52:21 -0300
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Citrix on VMWare
Hi all,
I was wondering whether anybody had performed the "daunting?" task of
installing any of the Metaframe suite on VMWare? I was thinking of
putting
CSG and/or the Web Interface server in a virtualized environment.
Your feed back is encouraged :-)
Bermuda Boy
Sean B. McLaughlin esq.
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