On 2014-01-26 07:24:58 +0100, Tomas Vondra wrote: > Not sure how to interpret that, though. For example where did the > ginCompareItemPointers go? I suspect it's thanks to inlining, and that > it might be related to the performance decrease. Or maybe not.
Try recompiling with CFLAGS="-fno-omit-frame-pointers -O2" and then use perf record -g. That gives you a hierarchical profile which often makes such questions easier to answer. 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
