On Thu, Nov 17, 2022 at 11:24 AM Andres Freund <and...@anarazel.de> wrote: > As an experiment, I added a progress report to BufferSync()'s first loop > (i.e. where it checks all buffers). On a 128GB shared_buffers cluster that > increases the time for a do-nothing checkpoint from ~235ms to ~280ms. If I > remove the changecount stuff and use a single write + write barrier, it ends > up as 250ms. Inlining brings it down a bit further, to 247ms.
OK, I'd say that's pretty good evidence that we can't totally disregard the issue. -- Robert Haas EDB: http://www.enterprisedb.com
