Messages in this thread Patch in this message | | | From | Wanpeng Li <> | Subject | [PATCH v3 09/12] sched/numa: fix task scan rate adjustment | Date | Sun, 8 Dec 2013 14:14:50 +0800 |
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commit 04bb2f947 (sched/numa: Adjust scan rate in task_numa_placement) calculate period_slot which should be used as base value of scan rate increase if remote access dominate. However, current codes forget to use it, this patch fix it.
Signed-off-by: Wanpeng Li <liwanp@linux.vnet.ibm.com> --- kernel/sched/fair.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 7073c76..b077f1b3 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -1358,7 +1358,7 @@ static void update_task_scan_period(struct task_struct *p, */ period_slot = DIV_ROUND_UP(diff, NUMA_PERIOD_SLOTS); ratio = DIV_ROUND_UP(private * NUMA_PERIOD_SLOTS, (private + shared)); - diff = (diff * ratio) / NUMA_PERIOD_SLOTS; + diff = (period_slot * ratio) / NUMA_PERIOD_SLOTS; } p->numa_scan_period = clamp(p->numa_scan_period + diff, -- 1.7.5.4
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