So I see no evidence for a slowdown on pgbench's SELECT queries. Anybody else want to check performance on simple scan/join queries?
I did your tests with configure --enable-depend and pgbench -i -s 100 and slightly tweaked postgresql.conf, on notebook with CPU i7-3520M (2 cores + 2 HT), FreeBSD 10.2.
pgbench -c 4 -j 4 -P 1 -T 60 -S HEAD 35834 tps avg (35825/35828/35808/35844/35865) Patched HEAD 35529 tps avg (35516/35561/35527/35534/35510) ~1% slowdown. I can live with that. -- Teodor Sigaev E-mail: teo...@sigaev.ru WWW: http://www.sigaev.ru/ -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers