* Ingo Molnar <[EMAIL PROTECTED]> wrote: > i've meanwhile tested hackbench 90 and the performance difference > between -ck and -cfs-devel seems to be mostly down to the more precise > (but slower) sched_clock() introduced in v2.6.23 and to the startup > penalty of freshly created tasks.
Rob, another thing i just noticed in your .configs: you have CONFIG_PREEMPT=y enabled. Would it be possible to get a testrun with that disabled? That gives the best throughput and context-switch latency numbers. (CONFIG_PREEMPT might also have preemption artifacts - there's one report of it having _worse_ desktop latencies on certain hardware than !CONFIG_PREEMPT.) Ingo - 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/