> Hmm ... I wonder whether this means that the current work on > parallelizing I/O (the posix_fadvise patch in particular) is a dead > end. Because what that is basically going to do is expend more CPU > to improve I/O efficiency. If you believe this thesis then that's > not the road we want to go down.
I don't believe the thesis. The gap between disk speeds and memory speeds may narrow over time, but I doubt it's likely to disappear altogether any time soon, and certainly not for all users. Besides which, I believe the CPU overhead of that patch is pretty darn small when the feature is not enabled. ...Robert -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
