numa_scan_period is in milliseconds, not jiffies. Properly placed pages slow the scanning rate but adding 10 jiffies to numa_scan_period means that the rate scanning slows depends on HZ which is confusing. Get rid of the jiffies_to_msec conversion and treat it as ms. Signed-off-by: Mel Gorman <mgorman@xxxxxxx> --- kernel/sched/fair.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 23fd1f3..29ba117 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -914,7 +914,7 @@ void task_numa_fault(int node, int pages, bool migrated) p->numa_scan_period_max = task_scan_max(p); p->numa_scan_period = min(p->numa_scan_period_max, - p->numa_scan_period + jiffies_to_msecs(10)); + p->numa_scan_period + 10); } task_numa_placement(p); -- 1.8.1.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>