From: Peter Zijlstra <peterz@infradead.org>
To: Vincent Guittot <vincent.guittot@linaro.org>
Cc: mingo@redhat.com, juri.lelli@redhat.com,
dietmar.eggemann@arm.com, rostedt@goodmis.org,
bsegall@google.com, mgorman@suse.de, bristot@redhat.com,
linux-kernel@vger.kernel.org, tim.c.chen@linux.intel.com
Subject: Re: [PATCH v2 4/4] sched/fair: Remove sysctl_sched_migration_cost condition
Date: Fri, 15 Oct 2021 19:42:41 +0200 [thread overview]
Message-ID: <20211015174241.GJ174703@worktop.programming.kicks-ass.net> (raw)
In-Reply-To: <20211015124654.18093-5-vincent.guittot@linaro.org>
On Fri, Oct 15, 2021 at 02:46:54PM +0200, Vincent Guittot wrote:
> With a default value of 500us, sysctl_sched_migration_cost is
> significanlty higher than the cost of load_balance. Remove the
> condition and rely on the sd->max_newidle_lb_cost to abort
> newidle_balance.
>
> Suggested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
> Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
This is separate and not folded in for ease of bisection?
next prev parent reply other threads:[~2021-10-15 17:43 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-15 12:46 [PATCH v2 0/4] Improve newidle lb cost tracking and early abort Vincent Guittot
2021-10-15 12:46 ` [PATCH v2 1/4] sched/fair: Account update_blocked_averages in newidle_balance cost Vincent Guittot
2021-10-15 12:46 ` [PATCH v2 2/4] sched/fair: Skip update_blocked_averages if we are defering load balance Vincent Guittot
2021-10-15 12:46 ` [PATCH v2 3/4] sched/fair: Wait before decaying max_newidle_lb_cost Vincent Guittot
2021-10-15 17:40 ` Peter Zijlstra
2021-10-15 18:02 ` Vincent Guittot
2021-10-15 18:29 ` Peter Zijlstra
2021-10-15 12:46 ` [PATCH v2 4/4] sched/fair: Remove sysctl_sched_migration_cost condition Vincent Guittot
2021-10-15 17:42 ` Peter Zijlstra [this message]
2021-10-15 17:57 ` Vincent Guittot
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