From: "Michal Koutný" <mkoutny@suse.com>
To: 王贇 <yun.wang@linux.alibaba.com>
Cc: hannes@cmpxchg.org, vdavydov.dev@gmail.com,
Peter Zijlstra <peterz@infradead.org>,
mhocko@kernel.org, Ingo Molnar <mingo@redhat.com>,
keescook@chromium.org, mcgrof@kernel.org, linux-mm@kvack.org,
Hillf Danton <hdanton@sina.com>,
cgroups@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 2/4] numa: append per-node execution time in cpu.numa_stat
Date: Fri, 19 Jul 2019 18:39:31 +0200 [thread overview]
Message-ID: <20190719163930.GA854@blackbody.suse.cz> (raw)
In-Reply-To: <6973a1bf-88f2-b54e-726d-8b7d95d80197@linux.alibaba.com>
On Tue, Jul 16, 2019 at 11:40:35AM +0800, 王贇 <yun.wang@linux.alibaba.com> wrote:
> By doing 'cat /sys/fs/cgroup/cpu/CGROUP_PATH/cpu.numa_stat', we see new
> output line heading with 'exectime', like:
>
> exectime 311900 407166
What you present are times aggregated over CPUs in the NUMA nodes, this
seems a bit lossy interface.
Despite you the aggregated information is sufficient for your
monitoring, I think it's worth providing the information with the
original granularity.
Note that cpuacct v1 controller used to report such percpu runtime
stats. The v2 implementation would rather build upon the rstat API.
Michal
next prev parent reply other threads:[~2019-07-19 16:39 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <209d247e-c1b2-3235-2722-dd7c1f896483@linux.alibaba.com>
2019-07-03 3:26 ` [PATCH 0/4] per cpu cgroup numa suite 王贇
2019-07-03 3:28 ` [PATCH 1/4] numa: introduce per-cgroup numa balancing locality, statistic 王贇
2019-07-11 13:43 ` Peter Zijlstra
2019-07-12 3:15 ` 王贇
2019-07-11 13:47 ` Peter Zijlstra
2019-07-12 3:43 ` 王贇
2019-07-12 7:58 ` Peter Zijlstra
2019-07-12 9:11 ` 王贇
2019-07-12 9:42 ` Peter Zijlstra
2019-07-12 10:10 ` 王贇
2019-07-15 2:09 ` 王贇
2019-07-15 12:10 ` Michal Koutný
2019-07-16 2:41 ` 王贇
2019-07-19 16:47 ` Michal Koutný
2019-07-03 3:29 ` [PATCH 2/4] numa: append per-node execution info in memory.numa_stat 王贇
2019-07-11 13:45 ` Peter Zijlstra
2019-07-12 3:17 ` 王贇
2019-07-03 3:32 ` [PATCH 3/4] numa: introduce numa group per task group 王贇
2019-07-11 14:10 ` Peter Zijlstra
2019-07-12 4:03 ` 王贇
2019-07-03 3:34 ` [PATCH 4/4] numa: introduce numa cling feature 王贇
2019-07-08 2:25 ` [PATCH v2 " 王贇
2019-07-09 2:15 ` 王贇
2019-07-09 2:24 ` [PATCH v3 " 王贇
2019-07-11 14:27 ` [PATCH " Peter Zijlstra
2019-07-12 3:10 ` 王贇
2019-07-12 7:53 ` Peter Zijlstra
2019-07-12 8:58 ` 王贇
2019-07-22 3:44 ` 王贇
2019-07-11 9:00 ` [PATCH 0/4] per cgroup numa suite 王贇
2019-07-16 3:38 ` [PATCH v2 0/4] per-cgroup " 王贇
2019-07-16 3:39 ` [PATCH v2 1/4] numa: introduce per-cgroup numa balancing locality statistic 王贇
2019-07-16 3:40 ` [PATCH v2 2/4] numa: append per-node execution time in cpu.numa_stat 王贇
2019-07-19 16:39 ` Michal Koutný [this message]
2019-07-22 2:36 ` 王贇
2019-07-16 3:41 ` [PATCH v2 3/4] numa: introduce numa group per task group 王贇
2019-07-16 3:41 ` [PATCH v4 4/4] numa: introduce numa cling feature 王贇
2019-07-22 2:37 ` [PATCH v5 " 王贇
2019-07-25 2:33 ` [PATCH v2 0/4] per-cgroup numa suite 王贇
2019-08-06 1:33 ` 王贇
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