If you want to do something that has approx. 1000 times more relavance than improving CPU schedulers by some statistically insignificant amount, then please solve the following practical issues:
- Prevent memory hungry apps from forcing other apps (eg. sshd) into deep swap. AFAIK setrlimit does that on a per-process level. We need a per-class or per-process-hierarchy level.
- Prevent disk i/o intensive apps from blocking other apps that only do limited disk i/o. Again, we need some class or hierarchy structure to collect the statistics reliably.