eric soroos wrote:
> On Tue, 1 Apr 2003 09:39:17 -0800 (PST) in message
> <20030401173917.19476.qmail@web21101.mail.yahoo.com>, Shankar
> K <shan0075@yahoo.com> wrote:
> > hi jeff,
> >
> > go to
> > http://www.ca.postgresql.org/docs/momjian/hw_performance/
> > under 'filesystems' slide.
> >
>
> I suspect that is what he's seen.
>
> >From my experience, ext3 is only a percent or two slower than ext2 under pg_bench. It saves an amazing amount of
timeon startup after a failure by not having to fsck to confirm that the filesystem is in a consistent state.
>
> I believe that ext3 is a metadata journaling system, and not a
> data journaling system. This would indicate that the PG
> transactioning is complimentary to the filesystem journaling,
> not duplication.
Ext3 is only metadata journaling if you set the mount flags as
described. I also don't think pgbench is the best test for testing file
system performance.
--
Bruce Momjian | http://candle.pha.pa.us
pgman@candle.pha.pa.us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073
