On Sun, Nov 21, 2010 at 7:15 PM, Ivan Voras <ivo...@freebsd.org> wrote: > The "sbwait" part is from FreeBSD - IPC sockets, but so much blocking on > semwait indicates large contention in PostgreSQL.
I can reproduce this. I suspect, but cannot yet prove, that this is contention over the lock manager partition locks or the buffer mapping locks. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
