Excerpts from Robert Haas's message of jue abr 05 15:40:17 -0300 2012:
>
> On Thu, Apr 5, 2012 at 2:37 PM, Alvaro Herrera
> <alvherre@commandprompt.com> wrote:
> > The FK locking patch isn't on this list; however, I'm hijacking this
> > thread to say that some benchmarking runs we tried weren't all that
> > great, showing 9% performance degradation on stock pgbench -- i.e. a
> > large hit that will harm everybody even if they are not using FKs at
> > all. I'm thus setting the patch returned with feedback, which is sure
> > to make several hackers happy and tons of users unhappy.
>
> Ouch! That's a real bummer. It makes me glad that you tested it, but
> I can't say I'm happy about the outcome. Did you get in any insight
> into where the regression is coming from?
Not really -- after reaching that conclusion I dropped immediate work on
the patch to do other stuff (like checking whether there's any other
patch I can help with in commitfest). I will resume work later, for a
(hopefully early) 9.3 submission.
--
Álvaro Herrera <alvherre@commandprompt.com>
The PostgreSQL Company - Command Prompt, Inc.
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
