Re: [patch] CFS scheduler, -v12

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Ingo Molnar wrote:

CFS is fair even on SMP. Consider for example the worst-case 3-tasks-on-2-CPUs workload on a 2-CPU box:

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 2658 mingo     20   0  1580  248  200 R   67  0.0   0:56.30 loop
 2656 mingo     20   0  1580  252  200 R   66  0.0   0:55.55 loop
 2657 mingo     20   0  1576  248  200 R   66  0.0   0:55.24 loop

66% of CPU time for each task. The 'TIME+' column shows a 2% spread between the slowest and the fastest loop after just 1 minute of runtime (and the spread gets narrower with time).

Is there a way in CFS to tune the amount of time over which the load balancer is fair? (Of course there would be some overhead involved.)

Chris
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