linux-kernel - Re: [PATCH] sched/fair: Do not decay new task load on first enqueue

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Message-ID: <20161004212505.GR16071@codeblueprint.co.uk>
Date:   Tue, 4 Oct 2016 22:25:06 +0100
From:   Matt Fleming <matt@...eblueprint.co.uk>
To:     Vincent Guittot <vincent.guittot@...aro.org>
Cc:     Dietmar Eggemann <dietmar.eggemann@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Mike Galbraith <umgwanakikbuti@...il.com>,
        Yuyang Du <yuyang.du@...el.com>
Subject: Re: [PATCH] sched/fair: Do not decay new task load on first enqueue

On Wed, 28 Sep, at 05:00:20AM, Vincent Guittot wrote:
> 
> Matt,
> 
> May be you can try this patch which uses utilization in
> find_idlest_group. So even if runnable_load_avg is null, the
> utilization should not and another cpu will be chosen
> https://patchwork.kernel.org/patch/9306939/

Unfortunately it doesn't restore performance for my tests. I'll dig
into why that is the case tomorrow.