| From: | eric soroos <eric-psql(at)soroos(dot)net> |
|---|---|
| To: | Shankar K <shan0075(at)yahoo(dot)com>, pgsql-performance(at)postgresql(dot)org |
| Cc: | Jeffrey D(dot)Brower <jeff(at)pointhere(dot)net> |
| Subject: | Re: ext3 filesystem / linux 7.3 |
| Date: | 2003-04-01 17:53:48 |
| Message-ID: | 26287373.1162931668@[4.42.179.151] |
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| Lists: | pgsql-performance |
On Tue, 1 Apr 2003 09:39:17 -0800 (PST) in message <20030401173917(dot)19476(dot)qmail(at)web21101(dot)mail(dot)yahoo(dot)com>, Shankar K <shan0075(at)yahoo(dot)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 time on 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.
eric
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