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=-2.4 required=3.0 tests=DKIM_SIGNED, MAILING_LIST_MULTI,SPF_PASS,T_DKIM_INVALID,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham 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 B94C7ECDFB0 for ; Thu, 12 Jul 2018 20:08:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 790AF20841 for ; Thu, 12 Jul 2018 20:08:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="V5gqgOg3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 790AF20841 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732537AbeGLUTb (ORCPT ); Thu, 12 Jul 2018 16:19:31 -0400 Received: from mail-yb0-f195.google.com ([209.85.213.195]:44004 "EHLO mail-yb0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732355AbeGLUTa (ORCPT ); Thu, 12 Jul 2018 16:19:30 -0400 Received: by mail-yb0-f195.google.com with SMTP id x10-v6so11887411ybl.10; Thu, 12 Jul 2018 13:08:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=QDWhokhxPbRHqNeP+G9O/mtYZ0lyz3BTOD9tObyaEQw=; b=V5gqgOg3pmg6RX4kQtl0dsS8DOwsJ/ygyvEadMnbmOUU8pTUsi8Nsb+FqldfJsMjRo woKvSeGxqNp9ODD/hCj9UcZwCE1cnpg6ukDFHt++tk2NTHC+cIE7/LtEzHe8rA9+re/y Sx3Pgki8hxzrv4jSLF7+LpzivCRZe9bcrqx48HhgxM0c+8rEeTWgBhBuQeAJ3WQ9hKJa qqogSpTTlevgST8BZ/nzFk4ludqBRjT3aJBA80CbY0dvsjnMJe7xvl8vGCWud2ROsMzh XCrfVzHK95knXddegf8oGw6MBYGfPHv2xauN3KL/nJotANMOpxIgEZsIpkbqIdwTLr8D YUsw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to:user-agent; bh=QDWhokhxPbRHqNeP+G9O/mtYZ0lyz3BTOD9tObyaEQw=; b=H1I21JVNFE0pLd5AG/jIGfCzxnVeg//0Fi0iqx8g7hB7LXHPMESlKetZX3qxJadYZF E7Vwmc1W3NDN2L4OVZMN6bfrxPOjkWImgOzUNCCtcQ7/JHx7+sIo5DAcCNlhu3CMbLx/ 0FtJuzHgaVXfgoPSqsGjek8DjE61xou7QKoRgvateKUIinrYhiwDZh+HYJNn/cQitr3v LbnVv1M/FNZ4P+XZ03bFPp/6Gwovz5k5jF253DXdrth5I8FNVL2F9UqcwSU1x3F0NBdB MeqMHm2o3x8IlpaoohAd5aVXkIgv+3Tky3LLSUH3mdJi4jVlOHRlCKXjzMBkE86/TGQ4 WMsw== X-Gm-Message-State: AOUpUlGamZVVSLx8Ql5YxfQw0hVT3rUhTdRhdXwRMi2H0bm9t672rULP EOjmu87ZWQb88TGHRWbRi90= X-Google-Smtp-Source: AAOMgpccGC2RhMAGFB8LlekRRTH2rmJ/WHkRtUUqHhqYu4h3jkV3yliB6xkcOIhnLcLF1J9/Ur+XVQ== X-Received: by 2002:a25:1084:: with SMTP id 126-v6mr1997621ybq.340.1531426104180; Thu, 12 Jul 2018 13:08:24 -0700 (PDT) Received: from localhost ([2620:10d:c091:200::1:a01e]) by smtp.gmail.com with ESMTPSA id d11-v6sm10191126ywd.1.2018.07.12.13.08.23 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 12 Jul 2018 13:08:23 -0700 (PDT) Date: Thu, 12 Jul 2018 13:08:21 -0700 From: Tejun Heo To: Johannes Weiner Cc: Ingo Molnar , Peter Zijlstra , Andrew Morton , Linus Torvalds , Suren Baghdasaryan , Vinayak Menon , Christopher Lameter , Mike Galbraith , Shakeel Butt , linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-team@fb.com Subject: Re: [PATCH 09/10] psi: cgroup support Message-ID: <20180712200821.GN72677@devbig577.frc2.facebook.com> References: <20180712172942.10094-1-hannes@cmpxchg.org> <20180712172942.10094-10-hannes@cmpxchg.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180712172942.10094-10-hannes@cmpxchg.org> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jul 12, 2018 at 01:29:41PM -0400, Johannes Weiner wrote: > On a system that executes multiple cgrouped jobs and independent > workloads, we don't just care about the health of the overall system, > but also that of individual jobs, so that we can ensure individual job > health, fairness between jobs, or prioritize some jobs over others. > > This patch implements pressure stall tracking for cgroups. In kernels > with CONFIG_PSI=y, cgroup2 groups will have cpu.pressure, > memory.pressure, and io.pressure files that track aggregate pressure > stall times for only the tasks inside the cgroup. > > Signed-off-by: Johannes Weiner Acked-by: Tejun Heo Please feel free to route with the rest of the patchset. Thanks. -- tejun