From 870a0bb5d636156502769233d02a0d5791d4366a Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Fri, 11 May 2012 00:26:27 +0200 Subject: [PATCH] sched/numa: Don't scale the imbalance It's far too easy to get ridiculously large imbalance pct when you scale it like that. Use a fixed 125% for now. Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-zsriaft1dv7hhboyrpvqjy6s@git.kernel.org Signed-off-by: Ingo Molnar --- kernel/sched/core.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 24922b7ff567..6883d998dc38 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -6261,11 +6261,6 @@ static int *sched_domains_numa_distance; static struct cpumask ***sched_domains_numa_masks; static int sched_domains_curr_level; -static inline unsigned long numa_scale(unsigned long x, int level) -{ - return x * sched_domains_numa_distance[level] / sched_domains_numa_scale; -} - static inline int sd_local_flags(int level) { if (sched_domains_numa_distance[level] > REMOTE_DISTANCE) @@ -6286,7 +6281,7 @@ sd_numa_init(struct sched_domain_topology_level *tl, int cpu) .min_interval = sd_weight, .max_interval = 2*sd_weight, .busy_factor = 32, - .imbalance_pct = 100 + numa_scale(25, level), + .imbalance_pct = 125, .cache_nice_tries = 2, .busy_idx = 3, .idle_idx = 2, -- 2.20.1