On Sat, Jul 11, 2015 at 04:36:55PM -0400, Waiman Long wrote: > This patch enables the accumulation of kicking and waiting related > PV qspinlock statistics when the new QUEUED_LOCK_STAT configuration > option is selected. It also enables the collection of kicking and > wakeup latencies which have a heavy dependency on the CPUs being used. > > The measured latencies for different CPUs are: > > CPU Wakeup Kicking > --- ------ ------- > Haswell-EX 26.4us 9.2us > Westmere-EX 99.4US 25.5us > > So Haswell is much faster than Westmere. > > The accumulated lock statistics will be reported in debugfs under the > pv-qspinlock directory.
You've again stuck this behind non-trivial patches :-( -- 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/
