| From: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
|---|---|
| To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
| Cc: | PostgreSQL-patches <pgsql-patches(at)postgresql(dot)org> |
| Subject: | Re: Disable page writes when fsync off, add GUC |
| Date: | 2005-07-04 16:00:49 |
| Message-ID: | 200507041800.49660.peter_e@gmx.net |
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| Lists: | pgsql-hackers pgsql-patches |
Bruce Momjian wrote:
> This patch disables page writes to WAL when fsync is off, because
> with no fsync guarantee, the page write recovery isn't useful.
>
> This also adds a full_page_writes GUC to turn off page writes to WAL.
> Some people might not want full_page_writes, but still might want
> fsync.
Do you have some numbers to suggest that there is a performance benefit
to be had?
--
Peter Eisentraut
http://developer.postgresql.org/~petere/
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