On Sun, 2012-08-19 at 11:58 -0700, Xin Tong wrote: > I have 2 questions about linux 2.6 x86_64 scheduler. > > 1. is the default scheduling algorithm SCHED_NORMAL in linux ?
Yes. > 2. how do i change the time slice in linux source code ? You shouldn't need to. You can tune "slice" by adjusting sched_latency_ns and sched_min_granularity_ns, but note that "slice" is not a fixed quantum. Also note that CFS preemption decisions are based upon instantaneous state. A task may have received a full (variable) "slice" of CPU time, but preemption will be triggered only if a more deserving task is available, so a "slice" is not the "max uninterrupted CPU time" that you may expect it to be.. but it is somewhat similar. -Mike -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
