On 2014-10-09 08:18:18 -0400, Robert Haas wrote: > On Thu, Oct 9, 2014 at 5:34 AM, Andres Freund <and...@2ndquadrant.com> wrote: > > Interesting - in my local profile AtStart_Inval() is more pronounced > > than AfterTriggerBeginQuery(). I've quickly and in a ugly fashion hacked > > AtStart_Inval() out of readonly queries ontop of your patch. Together > > that yields a ~3.5% performance improvement in my trivial 'SELECT * FROM > > tbl WHER pkey = xxx' testcase. > > Whoa. Now that's clearly significant.
Well, my guess it'll be far less noticeable in less trivial workloads. But it does seem worthwile. > You didn't attach the patch; was that inadvertent, or was it too ugly > for that? Far, far too ugly ;). I just removed the AtStart() call from xact.c and sprinkled it around relevant places instead ;) Greetings, Andres Freund -- Andres Freund http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
