linux-kernel - Re: [memcg] 45208c9105: aim7.jobs-per-min -14.0% regression

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Message-ID: <YT+wKFZg0OS0YFrF@slm.duckdns.org>
Date:   Mon, 13 Sep 2021 10:10:16 -1000
From:   Tejun Heo <tj@...nel.org>
To:     Shakeel Butt <shakeelb@...gle.com>
Cc:     Feng Tang <feng.tang@...el.com>, Hillf Danton <hdanton@...a.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Xing Zhengjun <zhengjun.xing@...ux.intel.com>,
        Linux MM <linux-mm@...ck.org>
Subject: Re: [memcg] 45208c9105: aim7.jobs-per-min -14.0% regression

On Mon, Sep 13, 2021 at 01:09:11PM -0700, Shakeel Butt wrote:
> Thanks a lot for the explanation. Are there any concerns to call
> cgroup_rstat_flush_irqsafe(root_mem_cgroup->css.cgroup) in system_wq?
> This will be called every 2 seconds, so, we can assume the updated
> tree would be small most of the time.

I can't think of a reason why this would be problematic.

Thanks.

-- 
tejun