From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8BCE3C49EA7 for ; Thu, 24 Jun 2021 14:01:34 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 23DA061404 for ; Thu, 24 Jun 2021 14:01:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 23DA061404 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=suse.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id E95726B0036; Thu, 24 Jun 2021 10:01:32 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id E6C056B005D; Thu, 24 Jun 2021 10:01:32 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D0E706B006C; Thu, 24 Jun 2021 10:01:32 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0226.hostedemail.com [216.40.44.226]) by kanga.kvack.org (Postfix) with ESMTP id 943C06B0036 for ; Thu, 24 Jun 2021 10:01:32 -0400 (EDT) Received: from smtpin28.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id AA0F61CFBD for ; Thu, 24 Jun 2021 14:01:32 +0000 (UTC) X-FDA: 78288780024.28.3154831 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by imf17.hostedemail.com (Postfix) with ESMTP id 02E424202A23 for ; Thu, 24 Jun 2021 14:01:30 +0000 (UTC) Received: from imap.suse.de (imap-alt.suse-dmz.suse.de [192.168.254.47]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 1DED721A32; Thu, 24 Jun 2021 14:01:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1624543288; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=FEFKZdgTERWXT+0XJ1bL+AoGSIdGk1Zg9WIdMoUJSP4=; b=CWzYk38bXrB42FnPkKbbWY9XOlnfxGFr30hdadDcnhfnJjYKG2Q1WwBaF+eYarN5VVPpfF fZY829DJIgn6fhqh8AGEe3Dtoi2z476kM+l/07Y5JdlqevOQT8MR8N9KeCASCvfBN/wySl EWry2ykB05wxstef6iRnlUwBc//9vx0= Received: from imap3-int (imap-alt.suse-dmz.suse.de [192.168.254.47]) by imap.suse.de (Postfix) with ESMTP id CB77F11A97; Thu, 24 Jun 2021 14:01:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1624543288; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=FEFKZdgTERWXT+0XJ1bL+AoGSIdGk1Zg9WIdMoUJSP4=; b=CWzYk38bXrB42FnPkKbbWY9XOlnfxGFr30hdadDcnhfnJjYKG2Q1WwBaF+eYarN5VVPpfF fZY829DJIgn6fhqh8AGEe3Dtoi2z476kM+l/07Y5JdlqevOQT8MR8N9KeCASCvfBN/wySl EWry2ykB05wxstef6iRnlUwBc//9vx0= Received: from director2.suse.de ([192.168.254.72]) by imap3-int with ESMTPSA id 1LeFMDeQ1GCYbwAALh3uQQ (envelope-from ); Thu, 24 Jun 2021 14:01:27 +0000 Date: Thu, 24 Jun 2021 16:01:26 +0200 From: Michal =?iso-8859-1?Q?Koutn=FD?= To: Shakeel Butt Cc: Tejun Heo , Johannes Weiner , Muchun Song , Michal Hocko , Roman Gushchin , Huang Ying , Andrew Morton , cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 2/2] memcg: periodically flush the memcg stats Message-ID: References: <20210615174435.4174364-1-shakeelb@google.com> <20210615174435.4174364-2-shakeelb@google.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="c4XJuQpPXESUwDMB" Content-Disposition: inline In-Reply-To: <20210615174435.4174364-2-shakeelb@google.com> Authentication-Results: imf17.hostedemail.com; dkim=pass header.d=suse.com header.s=susede1 header.b=CWzYk38b; dkim=pass header.d=suse.com header.s=susede1 header.b=CWzYk38b; dmarc=pass (policy=quarantine) header.from=suse.com; spf=pass (imf17.hostedemail.com: domain of mkoutny@suse.com designates 195.135.220.28 as permitted sender) smtp.mailfrom=mkoutny@suse.com X-Stat-Signature: 16afkmydp6gcstwpryot9o55rwdmxeu1 X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 02E424202A23 X-HE-Tag: 1624543290-913881 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: --c4XJuQpPXESUwDMB Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hello Shakeel. On Tue, Jun 15, 2021 at 10:44:35AM -0700, Shakeel Butt wrote: > At the moment memcg stats are read in four contexts: >=20 > 1. memcg stat user interfaces > 2. dirty throttling > 3. page fault > 4. memory reclaim Sorry for being dense or ignorant -- what do you refer to with the point no. 3 (memcg stats reader during page fault)? Thanks, Michal --c4XJuQpPXESUwDMB Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEEoQaUCWq8F2Id1tNia1+riC5qSgFAmDUkDIACgkQia1+riC5 qSgkNQ//Wx0lGjWBl5Ptgkl24PLr6hC4dKT9xfGHtREMBivFRgsE7HDg49GLByPH qUAvKXTGT6aD5vnwCWjQLC6DrLHSXCdDFWRdg0QjFtAoPGnNNoil0bZ1JJIwH7EU RJ1CVAdMoCwGc0P1tY/fl3hb/l6alCa9ogmfmBtrDZYKIeYkAque3jRMgbzFwPqA ME1FFj9eO4WyxTvl34p1Lc3S3rq2YBEWskuJ27f0okqfVo3TZAER8ZTHU9YEuSb0 fh/rspft73eHhmYLtri5zZYwsl8WudFavZYGBD/m01cwy8GlxMczm5aep4m4NDSY +OFuESusbxrVAq7Kjq3UU0DKxQj+bN1QRnVcMt1ZUiiIPEn6sRUK/DYTPFMYCSrh jaI9f8f5ADEfWuPanlLbcaTkxWFwOHRM6YxjP52NMcCXt7DMGJKxMxUXQdOd4PSY HnMhO0BiJErkCdU3m5omvvT+aK5/dF8q6SaAwWLea+NeOBTxOIIaCRs0VtO9CRJb zEE/bi+BKAsjKwMRIdk0QVLY+WpRP+WWi/Fb9s+nVleWkSgOb6ypst2rL0bNRGOr 4Xc/ouDNjDm1enrcWbxoeMSffYGc3WcpJ1D/mkAQrE+t2ElTAR8R+YHh5uWTsdzU OzdNbHsqQDJEMEsU7L/oDFKhhAuK7oOSPBZx90X8QI/C3+XJypo= =wXYz -----END PGP SIGNATURE----- --c4XJuQpPXESUwDMB--