Bruce Momjian <pgman@candle.pha.pa.us> writes:
> It could be tough. Imagine the delay increasing to 3 seconds? Seems
> there has to be an upper bound on the sleep. The more you delay, the
> more likely you will be to find someone to fsync you.
Good point, and an excellent illustration of the fact that
self-adjusting algorithms aren't that easy to get right the first
time ;-)
> Are we waking processes up after we have fsync()'ed them?
Not at the moment. That would be another good mechanism to investigate
for 7.2; but right now there's no infrastructure that would allow a
backend to discover which other ones were sleeping for fsync.
regards, tom lane