RE: Oracle Performance on VMWare
- From: "Allen, Brandon" <Brandon.Allen@xxxxxxxxxxx>
- To: "Crisler, Jon" <Jon.Crisler@xxxxxxx>, "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 2 Jan 2009 12:41:20 -0700
Unfortunately I didn't have time to document it very clearly for others, but I
did a lot of testing with ORION and dd to run multiple IO channels concurrently
and did some testing with Swingbench and some basic custom Oracle I/O scripts
(just a few basic concurrent index scans and full table scans on large test
tables). We're running Dell 2950s with dual quad-core Intel Xeon X5450 3.0GHz
procs, 32GB RAM, fiber attached to CX3-40 disk array with RAID 5 groups striped
across 5 disks and we were maxing out at about 900 IOPS with both bare metal
and on top of VMWare. One key thing to note is that we were running just a
single VM per physical box so maybe part of the problem is that VMWare suffers
when it has to manage the IO between multiple VMs?
Some might wonder - why run just a single VM per box? This was done for high
availability, not server consolidation. We have a cluster of several VMWare
servers running Oracle DB, App Server, MS Active Directory, Citrix, etc. - and
we can easily move VMs from box to box whenever we want. Some of the boxes do
run multiple VMs for other applications, but for the Oracle DBs, it's just
1-to-1.
Regards,
Brandon
From: Crisler, Jon [mailto:Jon.Crisler@xxxxxxx]
I would be interested in reading about how you set up your benchmarks.
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