Re: [PERFORM] Foreign key performance

On Fri, 18 Apr 2003, Tom Lane wrote:

> Stephan Szabo <sszabo@megazone23.bigpanda.com> writes:
> > Argh. I'm getting that state where gprof returns all 0s for times.  I'm
> > pretty sure this has come up before along with how to get it to work, but
> > I couldn't find it in the archives. Someday I'll learn how to use gprof. :(
>
> You're on Linux?  You need to compile postmaster.c with -DLINUX_PROFILE.

Yep, thanks. :)

> But the call counts do sound pretty damning.

Yeah, but even with my hack last night it was still appreciably slower
than immediate constraints. Comparing the call counts in that function
for the immediate versus deferred(hacked) weren't giving me a good idea of
where that time was going.