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=-6.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS 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 DFEBDC10F25 for ; Mon, 9 Mar 2020 19:09:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AB0F022525 for ; Mon, 9 Mar 2020 19:09:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583780982; bh=3O79TieOFkUtHzE2g9CcJtw3BUGz8I3DPEqMzui1lOw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=pGNqseMZ14XkWKu6P6LSnXk5r1nyvqsWPslx1zzReYp3yAYXJQy2u0VssAmhCM5tt Xie5mjHKl4hkP60fLnP7Asxb0Qyd0b8utZZ0U0Di0jgUeSsujs3dnCHPozaI0zZnJl f5tD417bkGqZDWkB1BTqThsoioA5K1MKu/Ev7P+c= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727561AbgCITJl (ORCPT ); Mon, 9 Mar 2020 15:09:41 -0400 Received: from mail.kernel.org ([198.145.29.99]:50406 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727431AbgCITJl (ORCPT ); Mon, 9 Mar 2020 15:09:41 -0400 Received: from sol.localdomain (c-107-3-166-239.hsd1.ca.comcast.net [107.3.166.239]) (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 7DF5421D56; Mon, 9 Mar 2020 19:09:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583780980; bh=3O79TieOFkUtHzE2g9CcJtw3BUGz8I3DPEqMzui1lOw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ACuP46S47HN6vyvYQy3/e6RabkHsldNOldpcLHPLZrZWwPSs1Dz4pHgQNNFcaCpRi xm1wNMlbAmW4CTyxjVwkFvg9OknITsRPpwFTT3FLtblIr4aHrBGYo+NquA5PpxP7A/ ZbMv0X1SRytHO5nf8jAQGsUPDKiWP7rn2iUQw4Ds= Date: Mon, 9 Mar 2020 12:09:39 -0700 From: Eric Biggers To: kernel test robot Cc: Theodore Ts'o , LKML , Linus Torvalds , lkp@lists.01.org Subject: Re: [fscrypt] 22d94f493b: will-it-scale.per_thread_ops 1.7% improvement Message-ID: <20200309190939.GD1073@sol.localdomain> References: <20200308140241.GP5972@shao2-debian> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200308140241.GP5972@shao2-debian> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Mar 08, 2020 at 10:02:41PM +0800, kernel test robot wrote: > Greeting, > > FYI, we noticed a 1.7% improvement of will-it-scale.per_thread_ops due to commit: > > > commit: 22d94f493bfb408fdd764f7b1d0363af2122fba5 ("fscrypt: add FS_IOC_ADD_ENCRYPTION_KEY ioctl") > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master > > in testcase: will-it-scale > on test machine: 192 threads Intel(R) Xeon(R) Platinum 9242 CPU @ 2.30GHz with 192G memory > with following parameters: > > nr_task: 50% > mode: thread > test: poll2 > cpufreq_governor: performance > ucode: 0x500002c > > test-description: Will It Scale takes a testcase and runs it from 1 through to n parallel copies to see if the testcase will scale. It builds both a process and threads based test in order to see any differences between the two. > test-url: https://github.com/antonblanchard/will-it-scale This looks like a flaky test. That commit shouldn't have had any effect on this performance test, either positive or negative. - Eric