Hannu Krosing wrote: >> If we compile it with --enable-selinux, it has two working modes >> controled by a guc option: sepostgresql (bool). >> If it is disabled, all the sepgsqlXXXX() invocations returns at >> the head of themself without doing anything. >> >> I believe this behavior follows the previous suggestion. > > Have you been able to measure any speed difference between > --enable-selinux on and off ?
At the last night, I measured TPS by pgbench in three cases: 1) A binary compiled without --enable-selinux 2) A binary compiled with --enable-selinux, runtime disabled 3) A binary compiled with --enable-selinux, runtime enabled Then, I cannot observe statically meaningful differences here. * Environment CPU: Core2Duo E6400 (2.13GHz) Mem: 2048MB kernel: 2.6.28-3.fc11.i686 * Parameters - shared_buffers = 512MB - rest of parameters are in the default * Benchmarch % pgbench -i -s 10 postgres % pgbench -c 2 -t 100000 postgres ---> 6 times * Results (1) compiled without --enable-selinux 1st: 478.565569 2nd: 478.223391 3rd: 442.365636 4th: 468.988499 5th: 482.173836 6th: 448.208615 ----------------- AVG: 466.420924 (STD: 17.0404) (2) compiled with --enable-selinux, runtime disabled 1st: 469.005777 2nd: 485.602091 3rd: 449.096123 4th: 460.657368 5th: 476.791923 6th: 444.027405 ----------------- AVG: 464.196781 (STD: 16.0456) (3) compiled with --enable-selinux, runtime enabled 1st: 462.702242 2nd: 473.312013 3rd: 442.214347 4th: 468.465614 5th: 473.498682 6th: 468.973759 ----------------- AVG: 464.861109 (STD: 11.7768) -- OSS Platform Development Division, NEC KaiGai Kohei <kai...@ak.jp.nec.com> -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
