Received: by 2002:a25:8b91:0:0:0:0:0 with SMTP id j17csp4026223ybl; Mon, 27 Jan 2020 15:09:05 -0800 (PST) X-Google-Smtp-Source: APXvYqy3KalS7c3rjsn+Bd6uFCrrEPwOmOr8SGlfgyzv1NyqRvSB3kBHLIYJRtmISBSTy5kInf/N X-Received: by 2002:a9d:65da:: with SMTP id z26mr14281999oth.197.1580166545402; Mon, 27 Jan 2020 15:09:05 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1580166545; cv=none; d=google.com; s=arc-20160816; b=P8qib1v848q9jyd6HLXcdTVFlpiS7kSwyjmHDd9C2uLqut2PIff8W9jGjvF0WpKOrS 2T9yJtFHbN+KkRtmLccaLLaZtu/wTucegD46DAvUt6XDvOVnmPOH1sY34f/8CHaAGXFa Cr+08LZGoniD+CbxquI+WCflCt3QPQP0UgI1Ox6ddhyWJuoBNFlBhc8f7yYrgb4xXhY7 XT3aEbaC42LvcD61+gGns7KQ1bx5MeBxSg9Suj0s7djdKNbocTtBiTegJlFIy0NZV6q/ wQ9rWxn3/DFZa1HnfkXHRfqzqtFOVv61BLzUHjM2GtKO2TvJXICGlkCDL5J6sJDLAand 9S3g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:user-agent:references :message-id:in-reply-to:subject:cc:to:from:date; bh=sfmz0U0HNzNWBbslAiIuhmvvrbZ5w0lv4fJdsHrfGIM=; b=VtjxUOMP1yC1q/sO4wzdiZAugRwTofjyfNf8q7GzgBYEi8pcqDNY7WJVYR98MxSev2 kOaB+1o56f6a8sZt0dQBT6FFBHbWnHlh6D6bxyIOqSvQQ2Arzlz7GVq2FKQTVfgtfNzw lEnP74rVx1sBlla+iJ9AU3AeKQldy6Nro1w+eOQ63ev+aYm5UJSFpgPgqIuisi3twion YOATdptBfU0q442Z4LlgwBzj+mC1HuYV8KEAIbRJrNcMy/+/KWgpCCuFHE4riPD+Ave8 V+EPVapxpjqvxNb/fCzYLzeC12Roh57QyQ+7u1SQwXfQUwTa3ED5nUBfVFt3ynQ3lQvv CE0Q== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id q19si6389655otm.221.2020.01.27.15.08.47; Mon, 27 Jan 2020 15:09:05 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726327AbgA0XEz (ORCPT + 99 others); Mon, 27 Jan 2020 18:04:55 -0500 Received: from gentwo.org ([3.19.106.255]:56170 "EHLO gentwo.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726101AbgA0XEy (ORCPT ); Mon, 27 Jan 2020 18:04:54 -0500 Received: by gentwo.org (Postfix, from userid 1002) id 7C85D3F25A; Mon, 27 Jan 2020 23:04:53 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by gentwo.org (Postfix) with ESMTP id 7B7BE3E9B5; Mon, 27 Jan 2020 23:04:53 +0000 (UTC) Date: Mon, 27 Jan 2020 23:04:53 +0000 (UTC) From: Christopher Lameter X-X-Sender: cl@www.lameter.com To: =?ISO-8859-15?Q?Michal_Koutn=FD?= cc: Andrew Morton , Michal Hocko , LKML , linux-mm@kvack.org Subject: Re: SLUB: purpose of sysfs events on cache creation/removal In-Reply-To: <20200127173336.GB17425@blackbody.suse.cz> Message-ID: References: <20191204153225.GM25242@dhcp22.suse.cz> <20191204173224.GN25242@dhcp22.suse.cz> <20200106115733.GH12699@dhcp22.suse.cz> <20200109145236.GS4951@dhcp22.suse.cz> <20200109114415.cf01bd3ad30c5c4aec981653@linux-foundation.org> <20200117171331.GA17179@blackbody.suse.cz> <20200118161528.94dc18c074aeaa384200486b@linux-foundation.org> <20200127173336.GB17425@blackbody.suse.cz> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="531401748-106161774-1580166293=:25307" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --531401748-106161774-1580166293=:25307 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 8BIT On Mon, 27 Jan 2020, Michal Koutn? wrote: > When I rerun the script with patched kernel, udev sit mostly idle (there > were no other udev event sources). So the number can be said to drop to > 0% CPU time / event/s. > > > Typically the author, but not always. If someone else is particularly > > motivated to get a patch merged up they can take it over. > Christopher, do you consider resending your patch? (I second that it > exposes the internal details (wrt cgroup caches) and I can observe the > just reading the events by udevd wastes CPU time.) The patch exposes details of cgroup caches? Which patch are we talking about? --531401748-106161774-1580166293=:25307--