Re: New WAL record to detect the checkpoint redo location - Mailing list pgsql-hackers

On Thu, Oct 5, 2023 at 2:34 PM Andres Freund <andres@anarazel.de> wrote:
> If I add an unlikely around if (rechdr->xl_rmid == RM_XLOG_ID), the
> performance does improve. But that "only" brings it up to 322.406. Not sure
> what the rest is.

I don't really think this is worth worrying about. A sub-one-percent
regression on a highly artificial test case doesn't seem like a big
deal. Anybody less determined than you would have been unable to
measure that there even is a regression in the first place, and that's
basically everyone.

--
Robert Haas
EDB: http://www.enterprisedb.com