josh wrote:
I have become convinced I don't understand the meaning of the output of the commands that show memory use. Shouldn't there be processes running that would eventually, reclaim memory that is not used and make the basic used numbers go down.
It's my understanding that as long as requests are made for information that is cached, the system will keep it alive. For example, if you fired up your RaQ, hit the web server a bunch to get some info cached, and then disconnected it so there was no more traffic, after a couple of days (yes, not in only a couple of hours) it would drift back to having most of the cache freed. But it only takes one request every so often to restart the cache 'timer'...