Fix shmem allocation of fixed-sized custom stats kind StatsShmemSize(), that computes the shmem size needed for pgstats, includes the amount of shared memory wanted by all the custom stats kinds registered. However, the shared memory allocation was done by ShmemAlloc() in StatsShmemInit(), meaning that the space reserved was not used, wasting some memory.
These extra allocations would show up under "<anonymous>" in pg_shmem_allocations, as the allocations done by ShmemAlloc() are not tracked by ShmemIndexEnt. Issue introduced by 7949d9594582. Author: Heikki Linnakangas <[email protected]> Discussion: https://postgr.es/m/[email protected] Backpatch-through: 18 Branch ------ REL_18_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/93f08dc92cf822b9f9dc1ef5cd815b04c65e8718 Modified Files -------------- src/backend/utils/activity/pgstat_shmem.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
