On Wed, Jan 11, 2012 at 8:48 PM, Robert Haas <robertmh...@gmail.com> wrote: > I've had cause, a few times this development cycle, to want to measure > the amount of spinning on each lwlock in the system. To that end, > I've found the attached patch useful. Note that if you don't define > LWLOCK_STATS, this changes nothing except that the return value from > s_lock becomes int rather than void. If you do define LWLOCK_STATS, > then LWLockAcquire() counts the number of pg_usleep() calls that are > required to acquire each LWLock, in addition to the other statistics. > Since this has come up for me a few times now, I'd like to proposing > including it in core.
Well, this fell through the cracks, because I forgot to add it to the January CommitFest. Here it is again, rebased. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
spindebug-v2.patch
Description: Binary data
-- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
