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| /freebsd-9.3-release/sys/kern/ | ||
| H A D | sched_4bsd.c | diff 212455 Sat Sep 11 05:12:10 MDT 2010 mav Merge some SCHED_ULE features to SCHED_4BSD: - Teach SCHED_4BSD to inform cpu_idle() about high sleep/wakeup rate to choose optimized handler. In case of x86 it is MONITOR/MWAIT. Also it will be needed to bypass forthcoming idle tick skipping logic to not consume resources on events rescheduling when it won't give any benefits. - Teach SCHED_4BSD to wake up idle CPUs without using IPI. In case of x86, when MONITOR/MWAIT is active, it require just single memory write. This doubles performance on some heavily switching test loads. |
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