On 26/11/2013 17:57, Peter Zijlstra wrote: > > Replace sched_clock() usage with local_clock() which has a bounded > drift between CPUs (<2 jiffies). >
Peter, I have tested this patch and I see a performance regression of about 1.5%. Maybe it would be better, rather then testing in the fast path, to simply disallow busy polling altogether when sched_clock_stable is not true? Thanks, Eliezer -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
