On Tue, Apr 17, 2007 at 11:59:00AM +0200, Ingo Molnar wrote: > > * Nick Piggin <[EMAIL PROTECTED]> wrote: > > > 2.6.21-rc7-cfs-v2 > > 534.80user 30.92system 2:23.64elapsed 393%CPU > > 534.75user 31.01system 2:23.70elapsed 393%CPU > > 534.66user 31.07system 2:23.76elapsed 393%CPU > > 534.56user 30.91system 2:23.76elapsed 393%CPU > > 534.66user 31.07system 2:23.67elapsed 393%CPU > > 535.43user 30.62system 2:23.72elapsed 393%CPU > > Thanks for testing this! Could you please try this also with: > > echo 100000000 > /proc/sys/kernel/sched_granularity > > on the same system, so that we can get a complete set of numbers? Just > to make sure that lowering the preemption frequency indeed has the > expected result of moving kernbench numbers back to mainline levels. (if > not then that would indicate some CFS buglet) > > could you maybe even try a more extreme setting of: > > echo 500000000 > /proc/sys/kernel/sched_granularity > > for kicks? This would allow us to see how much kernbench we lose due to > preemption granularity. Thanks!
Yeah but I just powered down the test-box, so I'll have to get onto that tomorrow. - 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/
