On Tue, Oct 24, 2023 at 04:09:54PM -0500, Nathan Bossart wrote: > I'm able to reproduce the speedup with the provided benchmark on an Apple > M1 Pro (which appears to have the required instructions). There was almost > no change for the 512-byte case, but there was a ~60% speedup for the > 4096-byte case. > > However, I couldn't produce any noticeable speedup with Heikki's pg_waldump > benchmark [0]. I haven't had a chance to dig further, unfortunately. > Assuming I'm not doing something wrong, I don't think such a result should > necessarily disqualify this optimization, though.
Actually, since the pg_waldump benchmark likely only involves very small WAL records, it would make sense that there isn't much difference. *facepalm* -- Nathan Bossart Amazon Web Services: https://aws.amazon.com
