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 50F2DC433E6 for ; Mon, 15 Mar 2021 16:13:36 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 8CF8A64EF9 for ; Mon, 15 Mar 2021 16:13:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8CF8A64EF9 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=alien8.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 24F7B6B0036; Mon, 15 Mar 2021 12:13:35 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 200116B006C; Mon, 15 Mar 2021 12:13:35 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 052386B0070; Mon, 15 Mar 2021 12:13:34 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id DBA376B0036 for ; Mon, 15 Mar 2021 12:13:34 -0400 (EDT) Received: from smtpin25.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 8D9388249980 for ; Mon, 15 Mar 2021 16:13:34 +0000 (UTC) X-FDA: 77922603948.25.BF3BEEF Received: from mail.skyhub.de (mail.skyhub.de [5.9.137.197]) by imf21.hostedemail.com (Postfix) with ESMTP id 5982BE29203B for ; Mon, 15 Mar 2021 16:00:04 +0000 (UTC) Received: from zn.tnic (p200300ec2f07860038c86f91a939db76.dip0.t-ipconnect.de [IPv6:2003:ec:2f07:8600:38c8:6f91:a939:db76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id B96DE1EC0288; Mon, 15 Mar 2021 17:00:00 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1615824000; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=UQyudUKROkDbmPUGp2F469Qw909qU2BXgba4Lf8+Rbg=; b=lAuVjuSQt7FfMhcsmV9hb4GxqYSIK2AZRTB1qZtn/llQxanjeQQyy7OLI+P2d3OSM2XlAO r3yluYprLAXbsxZJX0Ug2qUcLxXRlu7X29/lTuno/uaYmIg1k7uCY3JmtBxr6MLV+xV6DA glLhN1+8nGcWQuoFWhe+Oo2s9PiErBY= Date: Mon, 15 Mar 2021 16:59:55 +0100 From: Borislav Petkov To: Shakeel Butt Cc: Vasily Averin , Cgroups , Michal Hocko , Linux MM , Johannes Weiner , Vladimir Davydov , Thomas Gleixner , Ingo Molnar , x86@kernel.org Subject: Re: [PATCH v2 8/8] memcg: accounting for ldt_struct objects Message-ID: <20210315155955.GD20497@zn.tnic> References: <360b4c94-8713-f621-1049-6bc0865c1867@virtuozzo.com> <20210315132740.GB20497@zn.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: X-Stat-Signature: wt6w8h5bhwkn6gsxy4gjfw4z8sbapxw8 X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 5982BE29203B Received-SPF: none (alien8.de>: No applicable sender policy available) receiver=imf21; identity=mailfrom; envelope-from=""; helo=mail.skyhub.de; client-ip=5.9.137.197 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1615824004-410913 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 Mon, Mar 15, 2021 at 08:48:26AM -0700, Shakeel Butt wrote: > Let me try to provide the reasoning at least from my perspective. > There are legitimate workloads with hundreds of processes and there > can be hundreds of workloads running on large machines. The > unaccounted memory can cause isolation issues between the workloads > particularly on highly utilized machines. Good enough for me, as long as that is part of the commit message. Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette