Avoid unnecessary page-level SSI lock check in heap_insert(). As observed by Heikki, we need not conflict on heap page locks during an insert; heap page locks are only aggregated tuple locks, they don't imply locking "gaps" as index page locks do. So we can avoid some unnecessary conflicts, and also do the SSI check while not holding exclusive lock on the target buffer.
Kevin Grittner, reviewed by Jeff Davis. Back-patch to 9.1. Branch ------ REL9_1_STABLE Details ------- http://git.postgresql.org/pg/commitdiff/e5b86c93b66b5caeb25a65bae26b04fc7a068957 Modified Files -------------- src/backend/access/heap/heapam.c | 19 ++++++++++++------- 1 files changed, 12 insertions(+), 7 deletions(-) -- Sent via pgsql-committers mailing list ([email protected]) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-committers
