Greg,
> This is interesting, because test_fsync consistently reported a rate of
> about half this when using open_datasync instead of the equal
> performance I'm getting from the database. I'll see if I can reproduce
> that further, but it's no reason to be concerned about the change that's
> been made I think. Just more evidence that test_fsync has quirks left
> to be sorted out. But that's not backbranch material, it should be part
> of 9.1 only refactoring, already in progress via the patch Josh
> submitted. There's a bit of time left to get that done.
Did you rerun test_sync with O_DIRECT entabled, using my patch? The
figures you had from test_fsync earlier were without O_DIRECT.
--
-- Josh Berkus
PostgreSQL Experts Inc.
http://www.pgexperts.com
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