On Tue, 12 Mar 2024 at 12:25, Tomas Vondra <tomas.von...@enterprisedb.com> wrote: > (b) slab is considerably slower
It would be interesting to modify SlabReset() to, instead of free()ing the blocks, push the first SLAB_MAXIMUM_EMPTY_BLOCKS of them onto the emptyblocks list. That might give us an idea of how much overhead comes from malloc/free. Having something like this as an option when creating a context might be a good idea. generation.c now keeps 1 "freeblock" which currently does not persist during context resets. Some memory context usages might suit having an option like this. Maybe something like the executor's per-tuple context, which perhaps (c|sh)ould be a generation context... However, saying that, I see you measure it to be slightly slower than aset. David
