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[115.124.30.130]) by mx.google.com with ESMTPS id 17si16666034pfw.148.2019.04.23.03.01.18 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 23 Apr 2019 03:01:19 -0700 (PDT) Received-SPF: pass (google.com: domain of yun.wang@linux.alibaba.com designates 115.124.30.130 as permitted sender) client-ip=115.124.30.130; Authentication-Results: mx.google.com; spf=pass (google.com: domain of yun.wang@linux.alibaba.com designates 115.124.30.130 as permitted sender) smtp.mailfrom=yun.wang@linux.alibaba.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alibaba.com X-Alimail-AntiSpam:AC=PASS;BC=-1|-1;BR=01201311R171e4;CH=green;DM=||false|;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04426;MF=yun.wang@linux.alibaba.com;NM=1;PH=DS;RN=7;SR=0;TI=SMTPD_---0TQ2QHDj_1556013675; Received: from testdeMacBook-Pro.local(mailfrom:yun.wang@linux.alibaba.com fp:SMTPD_---0TQ2QHDj_1556013675) by smtp.aliyun-inc.com(127.0.0.1); Tue, 23 Apr 2019 18:01:15 +0800 Subject: Re: [RFC PATCH 2/5] numa: append per-node execution info in memory.numa_stat To: Peter Zijlstra Cc: hannes@cmpxchg.org, mhocko@kernel.org, vdavydov.dev@gmail.com, Ingo Molnar , linux-kernel@vger.kernel.org, linux-mm@kvack.org References: <209d247e-c1b2-3235-2722-dd7c1f896483@linux.alibaba.com> <7be82809-79d3-f6a1-dfe8-dd14d2b35219@linux.alibaba.com> <20190423085248.GE11158@hirez.programming.kicks-ass.net> <8c3ad96d-7f3d-d966-6acc-8327023ae3f9@linux.alibaba.com> <20190423094644.GL11158@hirez.programming.kicks-ass.net> From: =?UTF-8?B?546L6LSH?= Message-ID: <9e3c163c-2a89-72d9-ee93-7fea3692b609@linux.alibaba.com> Date: Tue, 23 Apr 2019 18:01:14 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <20190423094644.GL11158@hirez.programming.kicks-ass.net> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 2019/4/23 下午5:46, Peter Zijlstra wrote: > On Tue, Apr 23, 2019 at 05:36:25PM +0800, 王贇 wrote: >> >> >> On 2019/4/23 下午4:52, Peter Zijlstra wrote: >>> On Mon, Apr 22, 2019 at 10:12:20AM +0800, 王贇 wrote: >>>> This patch introduced numa execution information, to imply the numa >>>> efficiency. >>>> >>>> By doing 'cat /sys/fs/cgroup/memory/CGROUP_PATH/memory.numa_stat', we >>>> see new output line heading with 'exectime', like: >>>> >>>> exectime 24399843 27865444 >>>> >>>> which means the tasks of this cgroup executed 24399843 ticks on node 0, >>>> and 27865444 ticks on node 1. >>> >>> I think we stopped reporting time in HZ to userspace a long long time >>> ago. Please don't do that. >> >> Ah I see, let's make it us maybe? > > ms might be best I think. Will be in next version. Regards, Michael Wang >