Upon further reflection, I've decided that much of the information I could provide is not probably not needed on this wiki. Most of the settings I've been blogging about were only necessary because the maximum heap size could not be changed (with the usual exception of a custom launcher). Within the last 2 weeks, significant changes have allowed players to tweak launch settings and provided new defaults that should make extra tweaking unnecessary for most people.

I think Hyperion's original post reworded to fit the context of the Performance Issues FAQ should be enough for this wiki with respect to JVM tuning. In my opinion, we should document the availability of performance tweaking but not encourage it because better solutions have already been introduced to make it (at least partially) superfluous.

Links to Sun's/Oracle's documentation on ergonomics, JVM options, and GC tuning could be helpful to provide a starting point for those who still wish to tinker. I tend to be paranoid, however, so I fear providing those links may serve as an endorsement to read them and/or that any of the settings presented in those documents are necessary (most of them aren't even useful). I just don't want to introduce more tech support work for either the community or the devs.