> Purpose is to provide consistent WAL writes, even when WALInsertLock
> contended. Currently no "off" option, thinking is that the overhead of
> doing this is relatively low and so it can be "always on" - exactly as
> it is for sync rep.
Hmmm, have you had a chance to do any performance tests?
--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com