On Mon, Feb 13, 2023 at 4:29 PM Andres Freund <and...@anarazel.de> wrote: > > 1. Some more increments on hot paths. We have to add this tiny toll to > > every single buffer hit, but it will be seldom of any use. > > Additionally, I bet it slows down EXPLAIN (ANALYZE, BUFFERS) noticeably. It's > already quite expensive... >
I think collection of instrumentation is done unconditionally. We always do that pgBufferUsage.shared_blks_hit++; when the buffer is in shared_buffers. Best regards, Andrey Borodin.
