On Sun, Nov 21, 2010 at 7:15 PM, Ivan Voras <ivoras@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