| 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: | Jan Wieck <JanWieck(at)Yahoo(dot)com>, pgsql-committers(at)postgresql(dot)org |
| Subject: | Re: pgsql-server/src backend/storage/buffer/bufmgr ... |
| Date: | 2004-01-30 10:41:25 |
| Message-ID: | 200401301041.i0UAfPk01658@candle.pha.pa.us |
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| Lists: | pgsql-committers |
Tom Lane wrote:
> Jan Wieck <JanWieck(at)Yahoo(dot)com> writes:
> > Now doing fsync() or fdatasync() of possibly dozens of files in a row,
> > forcing the kernel to do one scattered file after another, letting the
> > disk heads dance like step-chicken on a hot tin ... that will be an
> > improvement, oh boy.
>
> I'm not convinced it would be so bad. Normally you'd only be issuing
> those operations at checkpoint time, and if the bgwriter has been doing
Agreed, I don't have a problem with fsync() during checkpoint instead of
sync. I had problems with fsync from the background writer and
performance. Let me post ideas to hackers & win32 list.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
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