Would restarting any of the servers periodically help?
Suppose it takes X minutes to restart a server, and that the "lag" problem puts Wikipedia out of operation for Y minutes -- where X << Y. Maybe then this would be a good "band-aid" for the problem.
It takes all of a couple seconds to restart apache; I've set it to do a "graceful" restart every half hour during US daytime, which more or less coincides with our peak hours.
-- brion vibber (brion @ pobox.com)
Does restarting apache also untangle the gridlock of database queries?
Ed Poor
wikitech-l@lists.wikimedia.org