Peter Geoghegan <pg(at)heroku(dot)com> writes:
> Backend fsyncs are theoretically still possible after the fsync
> request queue compaction patch (which was subsequently back-patched to
> all supported release branches). However, I'm reasonably confident
> that that patch was so effective as to make a backend fsync all but
> impossible.
What's your evidence for that claim?
regards, tom lane