| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Philip Warner <pjw(at)rhyme(dot)com(dot)au>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: CommitDelay performance improvement |
| Date: | 2001-02-24 06:36:00 |
| Message-ID: | 200102240636.BAA00664@candle.pha.pa.us |
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| Lists: | pgsql-hackers |
> Philip Warner <pjw(at)rhyme(dot)com(dot)au> writes:
> > It may have been much earler in the debate, but has anyone checked to see
> > what the maximum possible gains might be - or is it self-evident to people
> > who know the code?
>
> fsync off provides an upper bound to the speed achievable from being
> smarter about when to fsync... I doubt that fsync-once-per-checkpoint
> would be much different.
That was my point, people should be doing fsync once per checkpoint
rather than never.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
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