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SubjectRe: [PATCH -next] blk-throttle: enable io throttle for root in cgroup v2
Hello Kuai.

On Wed, Feb 09, 2022 at 09:22:30AM +0800, "yukuai (C)" <yukuai3@huawei.com> wrote:
> 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...

(Perhaps it depends on the protocol used for the IO but) eventually
client requests would be noticably lost/dropped and that's how the
server propagates the requested control onto the clients without relying
on the clients throttling themselves.

(Maybe better place to implement this would be a "testing" device mapper
target akin to the 'delay' one.)

Regards,
Michal
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