From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f71.google.com (mail-wm0-f71.google.com [74.125.82.71]) by kanga.kvack.org (Postfix) with ESMTP id 674336B02F2 for ; Tue, 16 May 2017 09:14:27 -0400 (EDT) Received: by mail-wm0-f71.google.com with SMTP id b20so36092420wma.11 for ; Tue, 16 May 2017 06:14:27 -0700 (PDT) Received: from mx0a-00082601.pphosted.com (mx0b-00082601.pphosted.com. [67.231.153.30]) by mx.google.com with ESMTPS id y84si2167160wmg.147.2017.05.16.06.14.25 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 16 May 2017 06:14:26 -0700 (PDT) Date: Tue, 16 May 2017 14:13:16 +0100 From: Roman Gushchin Subject: Re: [PATCH] mm: per-cgroup memory reclaim stats Message-ID: <20170516131316.GA7834@castle> References: <1494530183-30808-1-git-send-email-guro@fb.com> <20170516092956.GF2481@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20170516092956.GF2481@dhcp22.suse.cz> Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko Cc: Johannes Weiner , Tejun Heo , Li Zefan , Vladimir Davydov , cgroups@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Hi Michal! On Tue, May 16, 2017 at 11:29:56AM +0200, Michal Hocko wrote: > On Thu 11-05-17 20:16:23, Roman Gushchin wrote: > > Track the following reclaim counters for every memory cgroup: > > PGREFILL, PGSCAN, PGSTEAL, PGACTIVATE, PGDEACTIVATE, PGLAZYFREE and > > PGLAZYFREED. > > yes, those are definitely useful. I have an old patch to add them as > well but never managed to clean it up and post... > > > These values are exposed using the memory.stats interface of cgroup v2. > > Is there any reason to not add them to v1? Not really, I'm just not sure, if it worth it to change v1 interface here. If you want, I can add them. > This should be rather trivial after recent changes from Johannes. If you're about memcg1_events[]/memcg1_event_names[], they can't be reused, because the pgscan and pgsteal values are both sums of direct and kswapd values: e.g. events[PGSTEAL_KSWAPD] + events[PGSTEAL_DIRECT]. > > > The meaning of each value is the same as for global counters, > > available using /proc/vmstat. > > > > Also, for consistency, rename mem_cgroup_count_vm_event() to > > count_memcg_event_mm(). > > > > Signed-off-by: Roman Gushchin > > Suggested-by: Johannes Weiner > > Cc: Johannes Weiner > > Cc: Tejun Heo > > Cc: Li Zefan > > Cc: Michal Hocko > > Cc: Vladimir Davydov > > Cc: cgroups@vger.kernel.org > > Cc: linux-doc@vger.kernel.org > > Cc: linux-kernel@vger.kernel.org > > Cc: linux-mm@kvack.org > > the patch itself looks good to me. I will have to double check it after > I am done with what I am doing currently and then will add my Acked-by Thank you! -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org