Re: Postgresql 8.0 beta 1 - strange cpu usage statistics and slow vacuuming - Mailing list pgsql-general

From Tom Lane
Subject Re: Postgresql 8.0 beta 1 - strange cpu usage statistics and slow vacuuming
Date
Msg-id 4518.1093363860@sss.pgh.pa.us
Whole thread Raw
In response to Re: Postgresql 8.0 beta 1 - strange cpu usage statistics and slow vacuuming  (Shelby Cain <alyandon@yahoo.com>)
Responses Re: Postgresql 8.0 beta 1 - strange cpu usage statistics and slow vacuuming  (Shelby Cain <alyandon@yahoo.com>)
List pgsql-general
Shelby Cain <alyandon@yahoo.com> writes:
> 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?

IIRC, vacuum fsyncs once per table (possibly more depending on whether
you add FULL, ANALYZE, etc).  Not clear what case you are considering
exactly.

            regards, tom lane

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