> 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: teodor@sigaev.ru
WWW: http://www.sigaev.ru/