linux-kernel - Re: [PATCH -next] blk-throttle: enable io throttle for root in cgroup v2

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Message-ID: <34ae7d06-4f6b-73f7-7299-65cb8859aad8@huawei.com>
Date:   Wed, 9 Feb 2022 09:22:30 +0800
From:   "yukuai (C)" <yukuai3@...wei.com>
To:     Tejun Heo <tj@...nel.org>
CC:     <axboe@...nel.dk>, <cgroups@...r.kernel.org>,
        <linux-block@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <yi.zhang@...wei.com>
Subject: Re: [PATCH -next] blk-throttle: enable io throttle for root in cgroup
 v2

在 2022/02/09 2:49, Tejun Heo 写道:
> Hello,
> 
> On Tue, Feb 08, 2022 at 09:38:33AM +0800, yukuai (C) wrote:
>> 3) If we limit iops to 8 for each client from server, client should work
>> fine, however, server can receive 64 x 8 = 512 io at most at the same
>> time, which might cause too much pressure on the server.(maybe bps is
>> more appropriate to explain the high pressure).
> 
> I don't follow this part. Why can't the server control however it wanna
> control?

Hi,

Do you agree that the server can't control how many io it can receives
from one client if we limit from server? I think the difference is that
limit from client can control it...

Thanks,
Kuai
> 
> Thanks.
>