On 04/02/2013 11:23 AM, Alex Shi wrote: [snip] > > [patch v3 1/8] Revert "sched: Introduce temporary FAIR_GROUP_SCHED > [patch v3 2/8] sched: set initial value of runnable avg for new > [patch v3 3/8] sched: only count runnable avg on cfs_rq's nr_running > [patch v3 4/8] sched: update cpu load after task_tick. > [patch v3 5/8] sched: compute runnable load avg in cpu_load and > [patch v3 6/8] sched: consider runnable load average in move_tasks > [patch v3 7/8] sched: consider runnable load average in > [patch v3 8/8] sched: use instant load for burst wake up
I've tested the patch set on 12 cpu X86 box with 3.9.0-rc2, and pgbench show regression on high-end this time. | db_size | clients | tps | | tps | +---------+---------+-------+ +-------+ | 22 MB | 1 | 10662 | | 10446 | | 22 MB | 2 | 21483 | | 20887 | | 22 MB | 4 | 42046 | | 41266 | | 22 MB | 8 | 55807 | | 51987 | | 22 MB | 12 | 50768 | | 50974 | | 22 MB | 16 | 49880 | | 49510 | | 22 MB | 24 | 45904 | | 42398 | | 22 MB | 32 | 43420 | | 40995 | | 7484 MB | 1 | 7965 | | 7376 | | 7484 MB | 2 | 19354 | | 19149 | | 7484 MB | 4 | 37552 | | 37458 | | 7484 MB | 8 | 48655 | | 46618 | | 7484 MB | 12 | 45778 | | 45756 | | 7484 MB | 16 | 45659 | | 44911 | | 7484 MB | 24 | 42192 | | 37185 | -11.87% | 7484 MB | 32 | 36385 | | 34447 | | 15 GB | 1 | 7677 | | 7359 | | 15 GB | 2 | 19227 | | 19049 | | 15 GB | 4 | 37335 | | 36947 | | 15 GB | 8 | 48130 | | 46898 | | 15 GB | 12 | 45393 | | 43986 | | 15 GB | 16 | 45110 | | 45719 | | 15 GB | 24 | 41415 | | 36813 | -11.11% | 15 GB | 32 | 35988 | | 34025 | The reason may caused by wake_affine()'s higher overhead, and pgbench is really sensitive to this stuff... Regards, Michael Wang > -- > 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/ > -- 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/
