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Message-Id: <1434455762-30857-3-git-send-email-srikar@linux.vnet.ibm.com> Date: Tue, 16 Jun 2015 17:26:00 +0530 From: Srikar Dronamraju <srikar@...ux.vnet.ibm.com> To: Ingo Molnar <mingo@...nel.org>, Peter Zijlstra <peterz@...radead.org> Cc: linux-kernel@...r.kernel.org, srikar@...ux.vnet.ibm.com, Rik van Riel <riel@...hat.com>, Mel Gorman <mgorman@...e.de> Subject: [PATCH v2 2/4] sched:Consider imbalance_pct when comparing loads in numa_has_capacity This is consistent with all other load balancing instances where we absorb unfairness upto env->imbalance_pct. Absorbing unfairness upto env->imbalance_pct allows to pull and retain task to their preferred nodes. Signed-off-by: Srikar Dronamraju <srikar@...ux.vnet.ibm.com> --- kernel/sched/fair.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 5ecc43da7..7b23efa 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -1415,8 +1415,9 @@ static bool numa_has_capacity(struct task_numa_env *env) * --------------------- vs --------------------- * src->compute_capacity dst->compute_capacity */ - if (src->load * dst->compute_capacity > - dst->load * src->compute_capacity) + if (src->load * dst->compute_capacity * env->imbalance_pct > + + dst->load * src->compute_capacity * 100) return true; return false; -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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