On Thu, Aug 28, 2025 at 7:52 PM Tomas Vondra <to...@vondra.me> wrote: > Use this branch: > > https://github.com/tvondra/postgres/commits/index-prefetch-master/ > > and then Thomas' patch that increases the prefetch distance: > > > https://www.postgresql.org/message-id/CA%2BhUKGL2PhFyDoqrHefqasOnaXhSg48t1phs3VM8BAdrZqKZkw%40mail.gmail.com > > (IIRC there's a trivial conflict in read_stream_reset.).
I found it quite hard to apply Thomas' patch. There's actually 3 patches, with 2 earlier patches needed for earlier in the thread. And, there were significant merge conflicts to work around. I'm not sure that Thomas'/your patch to ameliorate the problem on the read stream side is essential here. Perhaps Andres can just take a look at the test case + feature branch, without the extra patches. That way he'll be able to see whatever the immediate problem is, which might be all we need. -- Peter Geoghegan
