linux-kernel - Re: [PATCH v2 3/5] mm: memcg: make stats flushing threshold per-memcg

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Message-ID: <20231011003646.dt5rlqmnq6ybrlnd@google.com>
Date:   Wed, 11 Oct 2023 00:36:46 +0000
From:   Shakeel Butt <shakeelb@...gle.com>
To:     Yosry Ahmed <yosryahmed@...gle.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...nel.org>,
        Roman Gushchin <roman.gushchin@...ux.dev>,
        Muchun Song <muchun.song@...ux.dev>,
        Ivan Babrou <ivan@...udflare.com>, Tejun Heo <tj@...nel.org>,
        "Michal Koutný" <mkoutny@...e.com>,
        Waiman Long <longman@...hat.com>, kernel-team@...udflare.com,
        Wei Xu <weixugc@...gle.com>, Greg Thelen <gthelen@...gle.com>,
        linux-mm@...ck.org, cgroups@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/5] mm: memcg: make stats flushing threshold per-memcg

On Tue, Oct 10, 2023 at 03:21:47PM -0700, Yosry Ahmed wrote:
[...]
> 
> I tried this on a machine with 72 cpus (also ixion), running both
> netserver and netperf in /sys/fs/cgroup/a/b/c/d as follows:
> # echo "+memory" > /sys/fs/cgroup/cgroup.subtree_control
> # mkdir /sys/fs/cgroup/a
> # echo "+memory" > /sys/fs/cgroup/a/cgroup.subtree_control
> # mkdir /sys/fs/cgroup/a/b
> # echo "+memory" > /sys/fs/cgroup/a/b/cgroup.subtree_control
> # mkdir /sys/fs/cgroup/a/b/c
> # echo "+memory" > /sys/fs/cgroup/a/b/c/cgroup.subtree_control
> # mkdir /sys/fs/cgroup/a/b/c/d
> # echo 0 > /sys/fs/cgroup/a/b/c/d/cgroup.procs
> # ./netserver -6
> 
> # echo 0 > /sys/fs/cgroup/a/b/c/d/cgroup.procs
> # for i in $(seq 10); do ./netperf -6 -H ::1 -l 60 -t TCP_SENDFILE --
> -m 10K; done

You are missing '&' at the end. Use something like below:

#!/bin/bash
for i in {1..22}
do
   /data/tmp/netperf -6 -H ::1 -l 60 -t TCP_SENDFILE -- -m 10K &
done
wait