From: Shakeel Butt <shakeelb@google.com>
To: yulei zhang <yulei.kernel@gmail.com>
Cc: Tejun Heo <tj@kernel.org>, Zefan Li <lizefan.x@bytedance.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Christian Brauner <christian@brauner.io>,
Cgroups <cgroups@vger.kernel.org>,
benbjiang@tencent.com, Wanpeng Li <kernellwp@gmail.com>,
Yulei Zhang <yuleixzhang@tencent.com>,
Linux MM <linux-mm@kvack.org>, Michal Hocko <mhocko@kernel.org>,
Roman Gushchin <guro@fb.com>
Subject: Re: [RFC 0/7] Introduce memory allocation speed throttle in memcg
Date: Mon, 31 May 2021 11:20:46 -0700 [thread overview]
Message-ID: <CALvZod4FUEXuqs8mKiN-WdmF2eCi29=aRG-cOaUQEDCbHdXQRA@mail.gmail.com> (raw)
In-Reply-To: <CACZOiM3VhYyzCTx4FbW=FF8WB=X46xaV53abqOVL+eHQOs8Reg@mail.gmail.com>
On Mon, May 31, 2021 at 5:11 AM yulei zhang <yulei.kernel@gmail.com> wrote:
>
[...]
> > Can you please explain why memory.high is not good enough for your
> > use-case? You can orchestrate the memory.high limits in such a way
> > that those certain cgroups hit their memory.high limit before causing
> > the global reclaim. You might need to dynamically adjust the limits
> > based on other workloads or unaccounted memory.
> >
>
> Yep, dynamically adjust the memory.high limits can ease the memory pressure
> and postpone the global reclaim, but it can easily trigger the oom in
> the cgroups,
Can you please elaborate a bit more on this? The memory.high has a
strong throttling mechanism, so if you are observing memory.high being
ineffective then we need to fix that. Also can you please explain a
bit more on the specific of the workload which is able to escape
memory.high throttling e.g. the normal number of processes/threads in
the workload?
next prev parent reply other threads:[~2021-05-31 18:21 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1622043596.git.yuleixzhang@tencent.com>
2021-05-26 20:52 ` Shakeel Butt
2021-05-31 12:11 ` yulei zhang
2021-05-31 18:20 ` Shakeel Butt [this message]
2021-06-01 14:45 ` Chris Down
2021-06-02 9:11 ` yulei zhang
2021-06-02 15:39 ` Shakeel Butt
2021-06-03 10:19 ` yulei zhang
2021-06-03 11:38 ` Chris Down
2021-06-04 10:15 ` yulei zhang
2021-06-04 11:51 ` Chris Down
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