Chris Mair wrote:
Hi,
thanks for all replys.
I've done a few tests.
Remounting the fs where $PGDATA lives with "forcedirectio"
(together with logging, that is default) did not help
(if not harm...) performance.
Sure - forcedirectio on the entire $PGDATA is a definite loss, you only
want it on $PGDATA/pg_xlog. The usual way this is accomplished is by
making a separate filsystem for pg_xlog and symlinking from $PGDATA.
Did you try the other option of remounting the fs for $PGDATA without
logging or forcedirectio?
Cheers
Mark
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