Good question. I hear about putting WAL/indexes/tables on separate spindles and all that, but what if all IO is virtualized?
I would guess that IO and OS page cache would be the main issues here.
i haven't dared to put my db on a virtual box though, because i don't know what happens inside of it.
On Fri, Aug 27, 2010 at 5:21 PM, David Bear
<David.Bear@asu.edu> wrote:
I'm wondering what experience people have had running pg 8.x in a virtualized environment. Are there any best practices to follow that differen when running on a real metal? Are there performance issue? What virtual environment seems most friendly to pg ? Xen, VMWare, other? What about storage; is it best to keep the cluster in a filesystem that is part of the vm-image or on a mounted file system that exists external to the image? (in other words, a /dev/sdxx that is really some NAS type of device, or NFS? CIFS?)
--
David Bear
College of Public Programs at ASU
602-494-0424
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"Patriotism is the conviction that your country is superior to all others because you were born in it." -- George Bernard Shaw