From: Rong Chen <rong.a.chen@intel.com>
To: Michal Hocko <mhocko@suse.com>
Cc: Waiman Long <longman@redhat.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Shakeel Butt <shakeelb@google.com>,
Chris Down <chris@chrisdown.name>,
Johannes Weiner <hannes@cmpxchg.org>,
Roman Gushchin <guro@fb.com>, Tejun Heo <tj@kernel.org>,
Vladimir Davydov <vdavydov.dev@gmail.com>,
Yafang Shao <laoar.shao@gmail.com>,
LKML <linux-kernel@vger.kernel.org>,
lkp@lists.01.org, lkp@intel.com, zhengjun.xing@intel.com
Subject: Re: [LKP] Re: [mm/memcg] bd0b230fe1: will-it-scale.per_process_ops -22.7% regression
Date: Mon, 2 Nov 2020 17:53:14 +0800 [thread overview]
Message-ID: <82d73ebb-a31e-4766-35b8-82afa85aa047@intel.com> (raw)
In-Reply-To: <20201102092754.GD22613@dhcp22.suse.cz>
On 11/2/20 5:27 PM, Michal Hocko wrote:
> On Mon 02-11-20 17:15:43, kernel test robot wrote:
>> Greeting,
>>
>> FYI, we noticed a -22.7% regression of will-it-scale.per_process_ops due to commit:
>>
>>
>> commit: bd0b230fe14554bfffbae54e19038716f96f5a41 ("mm/memcg: unify swap and memsw page counters")
>> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
> I really fail to see how this can be anything else than a data structure
> layout change. There is one counter less.
>
> btw. are cgroups configured at all? What would be the configuration?
Hi Michal,
We used the default configure of cgroups, not sure what configuration
you want,
could you give me more details? and here is the cgroup info of
will-it-scale process:
$ cat /proc/3042/cgroup
12:hugetlb:/
11:memory:/system.slice/lkp-bootstrap.service
10:devices:/system.slice/lkp-bootstrap.service
9:cpuset:/
8:perf_event:/
7:rdma:/
6:freezer:/
5:pids:/system.slice/lkp-bootstrap.service
4:net_cls,net_prio:/
3:blkio:/
2:cpu,cpuacct:/
1:name=systemd:/system.slice/lkp-bootstrap.service
Best Regards,
Rong Chen
next prev parent reply other threads:[~2020-11-02 9:54 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-02 9:15 [mm/memcg] bd0b230fe1: will-it-scale.per_process_ops -22.7% regression kernel test robot
2020-11-02 9:27 ` Michal Hocko
2020-11-02 9:53 ` Rong Chen [this message]
2020-11-02 10:02 ` [LKP] " Michal Hocko
2020-11-04 1:20 ` Xing Zhengjun
2020-11-04 2:46 ` Waiman Long
2020-11-04 8:15 ` Michal Hocko
2020-11-12 12:28 ` Feng Tang
2020-11-12 14:16 ` Michal Hocko
2020-11-12 16:43 ` Waiman Long
2020-11-13 7:39 ` Feng Tang
2020-11-13 7:34 ` Feng Tang
2020-11-20 11:44 ` Feng Tang
2020-11-20 13:19 ` Michal Hocko
2020-11-20 14:30 ` Feng Tang
2020-11-25 6:24 ` Feng Tang
2020-11-26 1:34 ` Waiman Long
2020-11-26 17:39 ` Linus Torvalds
2020-11-30 8:48 ` Michal Hocko
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