From: Abel Wu <wuyun.abel@bytedance.com>
To: Vincent Guittot <vincent.guittot@linaro.org>,
Peter Zijlstra <peterz@infradead.org>
Cc: Ben Segall <bsegall@google.com>,
Daniel Bristot de Oliveira <bristot@redhat.com>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Ingo Molnar <mingo@redhat.com>,
Juri Lelli <juri.lelli@redhat.com>, Mel Gorman <mgorman@suse.de>,
Steven Rostedt <rostedt@goodmis.org>,
linux-kernel@vger.kernel.org, Abel Wu <wuyun.abel@bytedance.com>
Subject: Re: [RFC PATCH 0/5] introduce sched-idle balancing
Date: Fri, 25 Feb 2022 14:51:42 +0800 [thread overview]
Message-ID: <4a457db8-428f-52ac-a864-cd3d2fda705a@bytedance.com> (raw)
In-Reply-To: <CAKfTPtB_GGb2eZqWfmKrY3-Z9spN9wzU4pXMGz38bAZu8ExCMQ@mail.gmail.com>
On 2/24/22 11:29 PM, Vincent Guittot Wrote:
> On Thu, 24 Feb 2022 at 16:20, Peter Zijlstra <peterz@infradead.org> wrote:
>>
>> On Thu, Feb 17, 2022 at 11:43:56PM +0800, Abel Wu wrote:
>>> Current load balancing is mainly based on cpu capacity
>>> and task util, which makes sense in the POV of overall
>>> throughput. While there still might be some improvement
>>> can be done by reducing number of overloaded cfs rqs if
>>> sched-idle or idle rq exists.
>>
>> I'm much confused, there is an explicit new-idle balancer and a periodic
>> idle balancer already there.
>
> I agree, You failed to explain why newly_idle and periodic idle load
> balance are not enough and we need this new one
Hi Vincent, sorry for not giving a clearer explanation. Please check
my previous email replying to Peter, thanks.
Best Regards,
Abel
next prev parent reply other threads:[~2022-02-25 6:51 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-17 15:43 Abel Wu
2022-02-17 15:43 ` [RFC PATCH 1/5] sched/fair: record overloaded cpus Abel Wu
2022-02-24 7:10 ` Gautham R. Shenoy
2022-02-24 14:36 ` Abel Wu
2022-02-27 8:08 ` Aubrey Li
2022-02-17 15:43 ` [RFC PATCH 2/5] sched/fair: introduce sched-idle balance Abel Wu
2022-02-17 15:43 ` [RFC PATCH 3/5] sched/fair: add stats for sched-idle balancing Abel Wu
2022-02-17 15:44 ` [RFC PATCH 4/5] sched/fair: filter out overloaded cpus in sis Abel Wu
2022-02-17 15:44 ` [RFC PATCH 5/5] sched/fair: favor cpu capacity for idle tasks Abel Wu
2022-02-24 3:19 ` [RFC PATCH 0/5] introduce sched-idle balancing Abel Wu
2022-02-24 15:20 ` Peter Zijlstra
2022-02-24 15:29 ` Vincent Guittot
2022-02-25 6:51 ` Abel Wu [this message]
2022-02-25 6:46 ` Abel Wu
2022-02-25 8:29 ` Vincent Guittot
2022-02-25 10:46 ` Abel Wu
2022-02-25 13:15 ` Vincent Guittot
2022-02-24 16:47 ` Mel Gorman
2022-02-25 8:15 ` Abel Wu
2022-02-25 10:16 ` Mel Gorman
2022-02-25 13:20 ` Abel Wu
2022-03-02 0:41 ` Josh Don
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