| From: | Mark Wong <markw(at)osdl(dot)org> |
|---|---|
| To: | "Jim C(dot) Nasby" <decibel(at)decibel(dot)org> |
| Cc: | Josh Berkus <josh(at)agliodbs(dot)com>, testperf-general(at)pgfoundry(dot)org, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: [Testperf-general] dbt2 & opteron performance |
| Date: | 2005-07-28 23:15:31 |
| Message-ID: | 200507282314.j6SNErjA010778@smtp.osdl.org |
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| Lists: | pgsql-hackers |
On Thu, 28 Jul 2005 17:17:25 -0500
"Jim C. Nasby" <decibel(at)decibel(dot)org> wrote:
> On Wed, Jul 27, 2005 at 07:32:34PM -0700, Josh Berkus wrote:
> > > This 4-way has 8GB of memory and four Adaptec 2200s controllers attached
> > > to 80 spindles (eight 10-disk arrays). For those familiar with the
> > > schema, here is a visual of the disk layout:
> > > http://www.osdl.org/projects/dbt2dev/results/dev4-015/layout-6.html
>
> Have you by-chance tried it with the logs and data just going to
> seperate RAID10s? I'm wondering if a large RAID10 would do a better job
> of spreading the load than segmenting things to specific drives.
No, haven't tried that. That would reduce my number of spindles as I
scale up. ;) I have the disks attached as JBODs and use LVM2 to stripe
the disks together.
Mark
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