Received: by 2002:a25:6193:0:0:0:0:0 with SMTP id v141csp902554ybb; Wed, 1 Apr 2020 11:45:34 -0700 (PDT) X-Google-Smtp-Source: APiQypLYN1AQ6rLqitMin8O+kIZMboXDBnoSe3wTBgFe4jTT2tBVU/pn8JTjUnrSgfRvNVmhtY3l X-Received: by 2002:aca:b854:: with SMTP id i81mr3731278oif.22.1585766734129; Wed, 01 Apr 2020 11:45:34 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1585766734; cv=none; d=google.com; s=arc-20160816; b=ydgUrHGimXvttSYnLf0Sr3D4ViPcJxtIZAmjgoJXpv/GjrEY8mMfM5vHx/LtVOurf6 ruKBeYmiH91vs4542wJT3ByZcho6z18R84l5HJ3R7mxIafpMFgbNKoZfYOq2QGEEj8sH QfgquRRs0L3nOMX0ZyvGOoOkD0HhjmqlLPepcc39gOawved/ilioX8EWhhY5v8m2EJgs uqdaLFi4qX5ImWo8atVIC4pmRNHTyGXhOWgwQg6doG8QJJ9OVdFLY4ACLAweTIptpshs wVAlsJoIO275QbT50YmWJq6NdRYuDS/NvrGCVBWUWG8FzvQrsEOcCiMd0o/sFB71SeU2 wu7w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:content-disposition :mime-version:reply-to:message-id:subject:cc:to:from:date :dkim-signature; bh=PRZMQKPDckjJOVOYEhwPGmZ8YcWmxnyQ9ZN7sG50BWg=; b=hzkUyFBsbLZfeAhnB8mxi3n4zepIc6YeCozwmW9Ulw3PPgsYmsn0j1XeeWa9qSHCJw VofDcder3yq4dBKDO490woe0z3OfdfvYxUXg6ZIsu2jOarXIgwZvT3WWNwCltQHBt1m9 /31dB+XSDzOJ1iS2oC5u3eQhn4lrQzrh6CHOr/fK34HNRMzYj4ElsxZg9pJq4DD/UjLb 3nXF6JX32UwyXL6/Yq2MDWwgCbb3FzpSVGjM1gLqENXKizg1g65NtgEvkjIQCoGQMJzN JNMZna5zbXol4YF+5LBINS03x8xyrJ7QCUOnLEqLDYmtIymVF4XYohofwIuHbox0qJzU 68hw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=vXYSv1Xi; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id s200si1165839oie.188.2020.04.01.11.45.21; Wed, 01 Apr 2020 11:45:34 -0700 (PDT) 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; dkim=pass header.i=@kernel.org header.s=default header.b=vXYSv1Xi; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732329AbgDASoR (ORCPT + 99 others); Wed, 1 Apr 2020 14:44:17 -0400 Received: from mail.kernel.org ([198.145.29.99]:54110 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726640AbgDASoQ (ORCPT ); Wed, 1 Apr 2020 14:44:16 -0400 Received: from paulmck-ThinkPad-P72.home (50-39-105-78.bvtn.or.frontiernet.net [50.39.105.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1B403206F5; Wed, 1 Apr 2020 18:44:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1585766656; bh=dFJJignhfyEupSLh7warErSBQQPjZWEj2LecqCbXml4=; h=Date:From:To:Cc:Subject:Reply-To:From; b=vXYSv1XizPlHbTVLgM3HbGo81YI/T+ZBDWUo4yyGlaehO4dDtOfa6AjWzItpZms+k HwMgiBCkrr/QklDVL91p2TqELtgLbuR3wPdjNOnfredyrJ2DOS/Pgu/yN98BVHVEH1 ymuI2j/cDLgHGy6E+xYYMXGX7itdGtHFZSq6WxVk= Received: by paulmck-ThinkPad-P72.home (Postfix, from userid 1000) id DD75435226B3; Wed, 1 Apr 2020 11:44:15 -0700 (PDT) Date: Wed, 1 Apr 2020 11:44:15 -0700 From: "Paul E. McKenney" To: urezki@gmail.com, joel@joelfernandes.org Cc: linux-kernel@vger.kernel.org, rcu@vger.kernel.org Subject: What should we be doing to stress-test kfree_rcu()? Message-ID: <20200401184415.GA7619@paulmck-ThinkPad-P72> Reply-To: paulmck@kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! What should we be doing to stress-test kfree_rcu(), including its ability to cope with OOM conditions? Yes, rcuperf runs are nice, but they are not currently doing much more than testing base functionality, performance, and scalability. Thanx, Paul