After extensive testing by all the helpful people out there I've released a new version of the staircase scheduler patch. Version 7.7 was nice and stable but probably underperformed about 4 minor versions before it. The stability was necessary, though, because a whole swag of little annoying starvation issues made it into 7.4. This version adds a few more planned features, and has improved the performance substantially, and improved the fairness of the non-interactive and computational scheduler settings. Since it's a significant improvement I've also resynced the -ck patchset without any other changes and released 2.6.7-ck4.

My website is here:
kernel.kolivas.org

Patches are here:
2.6.7 patches

and due to increasing demand and difficulty tracking who tested what I've started a mailing list for announcements, discussion, etc.
ck mailing list