Messages in this thread |  | | Subject | Re: [PATCH 2/2] sched: add statistic for rq->max_idle_balance_cost | From | Jason Low <> | Date | Wed, 22 Jan 2014 10:10:08 -0800 |
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On Wed, 2014-01-22 at 17:09 +0100, Peter Zijlstra wrote: > On Wed, Jan 22, 2014 at 04:24:13PM +0800, Alex Shi wrote: > > From: Alex Shi <alex.shi@linaro.org> > > Date: Tue, 21 Jan 2014 13:28:55 +0800 > > Subject: [RFC PATCH] sched: add statistic for rq->max_idle_balance_cost > > > > It's useful to track this value in debug mode. > > > > Signed-off-by: Alex Shi <alex.shi@linaro.org> > > --- > > kernel/sched/debug.c | 1 + > > 1 file changed, 1 insertion(+) > > > > diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c > > index 1e43e70..f5c529a 100644 > > --- a/kernel/sched/debug.c > > +++ b/kernel/sched/debug.c > > @@ -315,6 +315,7 @@ do { \ > > P(sched_goidle); > > #ifdef CONFIG_SMP > > P64(avg_idle); > > + P64(max_idle_balance_cost); > > #endif > > P(ttwu_count); > > Not also the per-sd value in sd_alloc_ctl_domain_table() ?
Yeah, tracking the sd->max_newidle_lb_cost can also be useful.
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