Horton

When LWLOCK_STATS is defined, count spindelays.

Robert Haas <rhaas@postgresql.org>

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Commit: b79ab00144e64217d418fde884bca8ea58fbd4a4
Author: Robert Haas <rhaas@postgresql.org>
Date: 2012-06-26T20:06:07Z
Releases: 9.3.0 
When LWLOCK_STATS is defined, count spindelays.

When LWLOCK_STATS is *not* defined, the only change is that
SpinLockAcquire now returns the number of delays.

Patch by me, review by Jeff Janes.

Files

PathChange+/−
src/backend/storage/lmgr/lwlock.c modified +9 −3
src/backend/storage/lmgr/s_lock.c modified +2 −1
src/include/storage/s_lock.h modified +4 −6