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Linux: The Really Fair Scheduler

Sep 01, 2007, 22:00 (2 Talkback[s])

"During the many threads discussing Ingo Molnar's recently merged Completely Fair Scheduler, Roman Zippel has repeatedly questioned the complexity of the new process scheduler. In a recent posting to the Linux Kernel mailing list he offered a simpler scheduler named the 'Really Fair Scheduler' saying, 'as I already tried to explain previously CFS has a considerable algorithmic and computational complexity. This patch should now make it clearer, why I could so easily skip over Ingo's long explanation of all the tricks CFS uses to keep the computational overhead low--I simply don't need them.' He offered a mathematical overview of how his new scheduler works, included some benchmarks, and reflected back to earlier discussions on the lkml asking, 'Ingo, from this point now I need your help, you have to explain to me, what is missing now relative to CFS. I tried to ask questions, but that wasn't very successful...'"

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