| From: | Neil Conway <neilc(at)samurai(dot)com> |
|---|---|
| To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
| Cc: | shridhar_daithankar(at)persistent(dot)co(dot)in, pgsql-hackers(at)postgresql(dot)org, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: [HACKERS] Performance while loading data and indexing |
| Date: | 2002-09-26 20:41:49 |
| Message-ID: | 871y7g1o1e.fsf@mailbox.samurai.com |
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| Lists: | pgsql-general pgsql-hackers pgsql-performance |
Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> The paper does recommend ext3, but the differences between file systems
> are very small.
Well, I only did a very rough benchmark (a few runs of pgbench), but
the results I found were drastically different: ext2 was significantly
faster (~50%) than ext3-writeback, which was in turn significantly
faster (~25%) than ext3-ordered.
> Also, though ext3 is slower, turning fsync off should make ext3 function
> similar to ext2.
Why would that be?
Cheers,
Neil
--
Neil Conway <neilc(at)samurai(dot)com> || PGP Key ID: DB3C29FC
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