| From: | Shelby Cain <alyandon(at)yahoo(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | pgsql-general <pgsql-general(at)postgresql(dot)org>, pgsql-hackers-win32(at)postgresql(dot)org |
| Subject: | Re: Postgresql 8.0 beta 1 - strange cpu usage statistics and slow vacuuming |
| Date: | 2004-08-24 15:12:12 |
| Message-ID: | 20040824151212.90135.qmail@web41610.mail.yahoo.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-general pgsql-hackers-win32 |
--- Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Ah-hah. The win32 hackers should confirm this, but
> my recollection is
> that sync/fsync are no-ops under Cygwin (one of the
> several reasons
> we would never recommend that port for production
> use). So this would
> fit the assumption that the 7.4 code was simply not
> syncing.
>
Sounds reasonable. However, I don't see the same
performance hit while doing bulk database operations
(ie: inserts, deletes, updates). Is that expected
behavior? Do vacuum operations fsync()/_commit() more
often?
Regards,
Shelby Cain
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