Re: more filesystem benchmarks - Mailing list pgsql-performance

From Michael Stone
Subject Re: more filesystem benchmarks
Date
Msg-id 20050716110108.GL19080@mathom.us
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In response to more filesystem benchmarks  ("Jeffrey W. Baker" <jwbaker@acm.org>)
List pgsql-performance
On Sat, Jul 16, 2005 at 01:12:27AM -0700, Jeffrey W. Baker wrote:
>Another frequent suggestion is to put the xlog on a separate device.  I
>tried this, and, for a given number of disks, it appears to be
>counter-productive.  A RAID5 of 5 disks holding both logs and data is
>about 15% faster than a RAID5 of 3 disks with the data, and a mirror of
>two disks holding the xlog.

Try simply a seperate partition on the same device with a different
filesystem (ext2).

Mike Stone

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