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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