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From: Mel Gorman <mgorman@suse.de>
To: ?????? <yun.wang@linux.alibaba.com>
Cc: Ingo Molnar <mingo@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Juri Lelli <juri.lelli@redhat.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	Ben Segall <bsegall@google.com>,
	Luis Chamberlain <mcgrof@kernel.org>,
	Kees Cook <keescook@chromium.org>,
	Iurii Zaikin <yzaikin@google.com>,
	Michal Koutn? <mkoutny@suse.com>,
	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-doc@vger.kernel.org,
	"Paul E. McKenney" <paulmck@linux.ibm.com>
Subject: Re: [PATCH v2 2/3] sched/numa: expose per-task pages-migration-failure
Date: Wed, 27 Nov 2019 10:00:46 +0000
Message-ID: <20191127100046.GM28938@suse.de> (raw)
In-Reply-To: <3931bf05-2939-0499-7660-8cc9a6f71c9a@linux.alibaba.com>

On Wed, Nov 27, 2019 at 09:50:01AM +0800, ?????? wrote:
> NUMA balancing will try to migrate pages between nodes, which
> could caused by memory policy or numa group aggregation, while
> the page migration could failed too for eg when the target node
> run out of memory.
> 
> Since this is critical to the performance, admin should know
> how serious the problem is, and take actions before it causing
> too much performance damage, thus this patch expose the counter
> as 'migfailed' in '/proc/PID/sched'.
> 
> Cc: Peter Zijlstra <peterz@infradead.org>
> Cc: Michal Koutný <mkoutny@suse.com>
> Suggested-by: Mel Gorman <mgorman@suse.de>
> Signed-off-by: Michael Wang <yun.wang@linux.alibaba.com>

This patch can be treated independently of the rest of the series as
it's not directly related.

Acked-by: Mel Gorman <mgorman@suse.de>

-- 
Mel Gorman
SUSE Labs

  reply index

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-13  3:43 [PATCH 0/3] sched/numa: introduce advanced numa statistic 王贇
2019-11-13  3:44 ` [PATCH 1/3] sched/numa: advanced per-cgroup " 王贇
2019-11-13  3:45 ` [PATCH 2/3] sched/numa: expose per-task pages-migration-failure 王贇
2019-11-13  3:45 ` [PATCH 3/3] sched/numa: documentation for per-cgroup numa stat 王贇
2019-11-13 15:09   ` Jonathan Corbet
2019-11-14  1:52     ` 王贇
2019-11-13 18:28   ` Iurii Zaikin
2019-11-14  2:22     ` 王贇
2019-11-15  2:29   ` [PATCH v2 " 王贇
2019-11-20  9:45 ` [PATCH 0/3] sched/numa: introduce advanced numa statistic 王贇
2019-11-25  1:35 ` 王贇
2019-11-27  1:48 ` [PATCH v2 " 王贇
2019-11-27  1:49   ` [PATCH v2 1/3] sched/numa: advanced per-cgroup " 王贇
2019-11-27 10:19     ` Mel Gorman
2019-11-28  2:09       ` 王贇
2019-11-28 12:39         ` Michal Koutný
2019-11-28 13:41           ` 王贇
2019-11-28 15:58             ` Michal Koutný
2019-11-29  1:52               ` 王贇
2019-11-29  5:19                 ` 王贇
2019-11-29 10:06                   ` Michal Koutný
2019-12-02  2:11                     ` 王贇
2019-11-27  1:50   ` [PATCH v2 2/3] sched/numa: expose per-task pages-migration-failure 王贇
2019-11-27 10:00     ` Mel Gorman [this message]
2019-12-02  2:22     ` 王贇
2019-11-27  1:50   ` [PATCH v2 3/3] sched/numa: documentation for per-cgroup numa stat 王贇
2019-11-27  4:58     ` Randy Dunlap
2019-11-27  5:54       ` 王贇
2019-12-03  5:59   ` [PATCH v3 0/2] sched/numa: introduce numa locality 王贇
2019-12-03  6:00     ` [PATCH v3 1/2] sched/numa: introduce per-cgroup NUMA locality info 王贇
2019-12-04  2:33       ` Randy Dunlap
2019-12-04  2:38         ` 王贇
2019-12-03  6:02     ` [PATCH v3 2/2] sched/numa: documentation for per-cgroup numa statistics 王贇
2019-12-03 13:43       ` Jonathan Corbet
2019-12-04  2:27         ` 王贇
2019-12-04  7:58     ` [PATCH v4 0/2] sched/numa: introduce numa locality 王贇
2019-12-04  7:59       ` [PATCH v4 1/2] sched/numa: introduce per-cgroup NUMA locality info 王贇
2019-12-05  3:28         ` Randy Dunlap
2019-12-05  3:29           ` Randy Dunlap
2019-12-05  3:52             ` 王贇
2019-12-04  8:00       ` [PATCH v4 2/2] sched/numa: documentation for per-cgroup numa statistics 王贇
2019-12-05  3:40         ` Randy Dunlap
2019-12-05  6:53       ` [PATCH v5 0/2] sched/numa: introduce numa locality 王贇
2019-12-05  6:53         ` [PATCH v5 1/2] sched/numa: introduce per-cgroup NUMA locality info 王贇
2019-12-05  6:54         ` [PATCH v5 2/2] sched/numa: documentation for per-cgroup numa, statistics 王贇
2019-12-10  2:19         ` [PATCH v5 0/2] sched/numa: introduce numa locality 王贇
2019-12-13  1:43         ` [PATCH v6 " 王贇
2019-12-13  1:47           ` [PATCH v6 1/2] sched/numa: introduce per-cgroup NUMA locality info 王贇
2020-01-03 15:14             ` Michal Koutný
2020-01-04  4:51               ` 王贇
2019-12-13  1:48           ` [PATCH v6 2/2] sched/numa: documentation for per-cgroup numa 王贇
2019-12-27  2:22           ` [PATCH v6 0/2] sched/numa: introduce numa locality 王贇
2020-01-17  2:19           ` 王贇
2020-01-19  6:08           ` [PATCH v7 " 王贇
2020-01-19  6:09             ` [PATCH v7 1/2] sched/numa: introduce per-cgroup NUMA locality info 王贇
2020-01-19  6:09             ` [PATCH v7 2/2] sched/numa: documentation for per-cgroup numa, statistics 王贇
2020-01-21  0:12               ` Randy Dunlap
2020-01-21  1:58                 ` 王贇
2020-01-21  1:56             ` [PATCH v8 0/2] sched/numa: introduce numa locality 王贇
2020-01-21  1:57               ` [PATCH v8 1/2] sched/numa: introduce per-cgroup NUMA locality info 王贇
2020-01-21  1:57               ` [PATCH v8 2/2] sched/numa: documentation for per-cgroup numa, statistics 王贇
2020-01-21  2:08                 ` Randy Dunlap

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