hi,
On 2025-04-08 12:06:47 -0400, Melanie Plageman wrote:
> And a somewhat related point, with buffered IO, READ_STREAM_SEQUENTIAL
> disables prefetching to encourage OS readahead. I don't know if any
> other users than sequential scan should do this.
Worth adding that prefetches are only issued
On Tue, Apr 8, 2025 at 12:07 PM Melanie Plageman
wrote:
> We've said before that maintenance_io_concurrency should govern work
> done on behalf of many different sessions. That was said to include at
> least vacuum and recovery. I need to change the index vacuum users to
> use READ_STREAM_MAINTENA
