2015-12-25 20:18 GMT+03:00 Andres Freund <and...@anarazel.de>: > On December 25, 2015 6:08:15 PM GMT+01:00, "Васильев Дмитрий" < > d.vasil...@postgrespro.ru> wrote: > >Hello hackers! > > > >I suddenly found commit ac1d794 gives up to 3 times performance > >degradation. > > > >I tried to run pgbench -s 1000 -j 48 -c 48 -S -M prepared on 70 > >CPU-core > >machine: > >commit ac1d794 gives me 363,474 tps > >and previous commit a05dc4d gives me 956,146 > >and master( 3d0c50f ) with revert ac1d794 gives me 969,265 > > > >it's shocking > > > > > You're talking about > http://git.postgresql.org/gitweb/?p=postgresql.git;a=blobdiff;f=src/backend/libpq/be-secure.c;h=2ddcf428f89fd12c230d6f417c2f707fbd97bf39;hp=26d8faaf773a818b388b899b8d83d617bdf7af9b;hb=ac1d794;hpb=a05dc4d7fd57d4ae084c1f0801973e5c1a1aa26e > > > If so, could you provide a hierarchical before/after profile? > > Andres > Hi, > > --- > Please excuse brevity and formatting - I am writing this on my mobile > phone. >
> You're talking about http://git.postgresql.org/gitweb/?p=postgresql.git;a=blobdiff;f=src/backend/libpq/be-secure.c;h=2ddcf428f89fd12c230d6f417c2f707fbd97bf39;hp=26d8faaf773a818b388b899b8d83d617bdf7af9b;hb=ac1d794;hpb=a05dc4d7fd57d4ae084c1f0801973e5c1a1aa26e Yes, about this. >If so, could you provide a hierarchical before/after profile? Performance | Git hash commit | Date ~ 360k tps | c3e7c24a1d60dc6ad56e2a0723399f1570c54224 | Thu Nov 12 09:12:18 2015 -0500 ~ 360k tps | ac1d7945f866b1928c2554c0f80fd52d7f977772 | Thu Nov 12 09:00:33 2015 -0500 ~ 960k tps | a05dc4d7fd57d4ae084c1f0801973e5c1a1aa26e | Thu Nov 12 07:40:31 2015 -0500 --- Dmitry Vasilyev Postgres Professional: http://www.postgrespro.com Russian Postgres Company
