On Mon, Mar 14, 2011 at 10:21:27PM +0100, Martijn van Oosterhout wrote:
> On Mon, Mar 14, 2011 at 07:49:46PM +0100, hubert depesz lubaczewski wrote:
> > These 60 were summarized, and output is available here:
> > http://www.depesz.com/various/locks.summary.txt
> >
> > as you can seem, in 48 cases backend process was in semop(), which relates
> > directly to my previous findings with ps/wchan.
>
> It's unfortunate you don't have debug symbols enabled, which makes
> these traces somewhat unreliable. So you get odd things like index_open
> calling index_close.
That trace is legitimate. If index_open()'s call into the relcache needs to
consult the catalogs, it will in turn scan pg_class_oid_index.
