| From: | "jason(at)ohloh(dot)net" <jason(at)ohloh(dot)net> |
|---|---|
| To: | Jeff Frost <jeff(at)frostconsultingllc(dot)com> |
| Cc: | Scott Marlowe <smarlowe(at)g2switchworks(dot)com>, Geoff Tolley <geoff(at)polimetrix(dot)com>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: SCSI vs SATA |
| Date: | 2007-04-05 15:38:58 |
| Message-ID: | 353D7681-0F87-4D44-9913-D71B8F9B1B1C@ohloh.net |
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| Lists: | pgsql-performance |
On Apr 5, 2007, at 8:21 AM, Jeff Frost wrote:
> I noticed this behavior on the last Areca based 8 disk Raptor
> system I built. Putting pg_xlog on a separate partition on the same
> logical volume was faster than putting it on the large volume. It
> was also faster to have 8xRAID10 for OS+data+pg_xlog vs 6xRAID10
> for data and 2xRAID1 for pg_xlog+OS. Your workload may vary, but
> it's definitely worth testing. The system in question had 1GB BBU.
Thanks for sharing your findings - I'll definitely try that config out.
-jay
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