On Wed, Dec 4, 2013 at 2:31 PM, Jonathan Corbet <cor...@lwn.net> wrote: > For those interested in the details... (1) It's not quite 50/50, that's one > bound for how the balance is allowed to go. (2) Anybody trying to add > tunables to the kernel tends to run into resistance. Exposing thousands of > knobs tends to lead to a situation where you *have* to be an expert on all > those knobs to get decent behavior out of your system. So there is a big > emphasis on having the kernel tune itself whenever possible. Here is a > situation where that is not always happening, but a fix (which introduces > no knob) is in the works.
I think there are interesting parallels here with the 'query plan hints' debate. In both cases I think the conservative voices are correct: better not to go crazy adding knobs. merlin -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
