Re: [PERFORM] Foreign key performance

Tom Lane wrote:
> Kevin Brown <kevin@sysexperts.com> writes:
> > Any chance of backporting these changes to 7_3_STABLE (when you're
> > satisfied they don't break anything)?  Just looking at the CVS log for
> > trigger.c, it appears there have been enough changes since then that
> > it might not be easy to do (and since it's not necessarily a "bug fix"
> > as such, it might not qualify for backporting to a stable version).
> 
> I'd be pretty hesitant to make such a change in the stable branch ---
> at least not without a lot of testing.  If you and others want to
> provide such testing, go to it.  The patch appears to apply cleanly
> enough to 7.3, but here's an adjusted patch if fuzz makes you
> nervous...

Thanks, Tom.  I've applied the patch to my server and it has so far
passed the few tests I've thrown at it so far (it has detected foreign
key violations in both immediate and deferred trigger mode).  And just
so you know, it performs FAR better than the pre-patched version does
-- in the overall transaction I'm doing, I see very little difference
now between deferred triggers and no triggers!


-- 
Kevin Brown                          kevin@sysexperts.com