On Mon, 2022-04-11 at 15:21 -0400, Robert Haas wrote: > ... before v13, the commit in question actually > changed the size of PGXACT, which is really quite bad -- it needs to > be 12 bytes for performance reasons. And there's no spare bytes > available, so I think we should follow one of the suggestions that he > had over in that email thread, and put delayChkptEnd in PGPROC even > though delayChkpt is in PGXACT.
This makes sense to me. Kudos to Kyotaro for considering this. At first read, this sounded like a trade-off between compatibility and performance for PG 12 and older. But I realize leaving delayChkpt in PGXACT and adding just delayChkptEnd to PGPROC is compatible and leaves PGXACT at a size of 12 bytes. So this sounds like a good approach to me. Best Regards Markus
