in case anybody finds it useful, here’s a link to Hongli’s work on
patching the GC so you can save like 30%/mongrel or so [if you use
forked mongrels]. Might be useful if RAM is your bottleneck.
http://izumi.plan99.net/blog/index.php/2008/01/14/making-ruby’s-garbage-collector-copy-on-write-friendly-part-7/