Reduce page locking in GIN vacuum GIN vacuum during cleaning posting tree can lock this whole tree for a long time with by holding LockBufferForCleanup() on root. Patch changes it with two ways: first, cleanup lock will be taken only if there is an empty page (which should be deleted) and, second, it tries to lock only subtree, not the whole posting tree.
Author: Andrey Borodin with minor editorization by me Reviewed-by: Jeff Davis, me https://commitfest.postgresql.org/13/896/ Branch ------ master Details ------- http://git.postgresql.org/pg/commitdiff/218f51584d5a9fcdf702bcc7f54b5b65e255c187 Modified Files -------------- src/backend/access/gin/README | 15 ++- src/backend/access/gin/ginbtree.c | 2 +- src/backend/access/gin/ginvacuum.c | 236 ++++++++++++++++++++----------------- src/include/access/gin_private.h | 2 + 4 files changed, 145 insertions(+), 110 deletions(-) -- Sent via pgsql-committers mailing list (pgsql-committers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-committers
