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 ------ master Details ------- https://git.postgresql.org/pg/commitdiff/17132f55c5a2c04743edec20655cc7123ce08713 Modified Files -------------- src/backend/utils/activity/pgstat_shmem.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
