Re: High context switches occurring

Oleg Bartunov <oleg@sai.msu.su> writes:
> I see a very low performance and high context switches on our
> dual itanium2 slackware box (Linux ptah 2.6.14 #1 SMP)
> with 8Gb of RAM, running 8.1_STABLE. Any tips here ?

> postgres@ptah:~/cvs/8.1/pgsql/contrib/pgbench$ time pgbench -s 10 -c 10 -t 3000 pgbench
> starting vacuum...end.
> transaction type: TPC-B (sort of)
> scaling factor: 1
> number of clients: 10

You can't expect any different with more clients than scaling factor :-(.

Note that -s is only effective when supplied with -i; it's basically
ignored during an actual test run.

            regards, tom lane