On Sun, Jun 12, 2016 at 05:33:24PM +0800, Hillf Danton wrote: > > - /* > > - * We put equal pressure on every zone, unless one zone has way too > > - * many pages free already. The "too many pages" is defined as the > > - * high wmark plus a "gap" where the gap is either the low > > - * watermark or 1% of the zone, whichever is smaller. > > - */ > > - balance_gap = min(low_wmark_pages(zone), DIV_ROUND_UP( > > - zone->managed_pages, KSWAPD_ZONE_BALANCE_GAP_RATIO)); > > + nr_to_reclaim += max(high_wmark_pages(zone), SWAP_CLUSTER_MAX); > > + } > > Missing sc->nr_to_reclaim = nr_to_reclaim; ? > Yes. It may explain why I saw lower than expected kswapd in more detailed tests recently. Thanks. -- Mel Gorman SUSE Labs -- 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>