From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 22615 invoked by alias); 2 Sep 2013 14:18:18 -0000 Mailing-List: contact libc-ports-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: libc-ports-owner@sourceware.org Received: (qmail 22452 invoked by uid 89); 2 Sep 2013 14:18:17 -0000 Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Mon, 02 Sep 2013 14:18:17 +0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-4.2 required=5.0 tests=AWL,BAYES_00,RP_MATCHES_RCVD autolearn=ham version=3.3.2 X-Spam-User: qpsmtpd, 2 recipients X-HELO: mx1.redhat.com Received: from int-mx12.intmail.prod.int.phx2.redhat.com (int-mx12.intmail.prod.int.phx2.redhat.com [10.5.11.25]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r82EHv0e022498 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Mon, 2 Sep 2013 10:17:58 -0400 Received: from spoyarek.pnq.redhat.com (ovpn-116-16.sin2.redhat.com [10.67.116.16]) by int-mx12.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id r82EHoMd007359 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO); Mon, 2 Sep 2013 10:17:54 -0400 Date: Mon, 02 Sep 2013 14:18:00 -0000 From: Siddhesh Poyarekar To: Will Newton Cc: "Carlos O'Donell" , "libc-ports@sourceware.org" , Patch Tracking , =?utf-8?B?T25kxZllaiBCw61sa2E=?= , libc-alpha@sourceware.org Subject: benchmark improvements (Was: Re: [PATCH] sysdeps/arm/armv7/multiarch/memcpy_impl.S: Improve performance.) Message-ID: <20130902142037.GH3273@spoyarek.pnq.redhat.com> References: <520894D5.7060207@linaro.org> <5220D30B.9080306@redhat.com> <5220F1F0.80501@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-SW-Source: 2013-09/txt/msg00006.txt.bz2 Adding libc-alpha since my comments on this are more suitable there - maybe we should just get rid of the ports mailing list altogether. On Mon, Sep 02, 2013 at 02:58:23PM +0100, Will Newton wrote: > The key advantage of the cortex-strings framework is that it allows > graphing the results of benchmarks. Often changes to string function > performance can only really be analysed graphically as otherwise you > end up with a huge soup of numbers, some going up, some going down and > it is very hard to separate the signal from the noise. We already depend on gd-devel to draw graphs for memusagestat. Maybe we could leverage that in the microbenchmark as well and come up with html reports rather than just a bench.out? Graphs in general are a lot more readable and I agree that they would be the next logical improvement to the benchmark framework. > The glibc benchmarks also have some other weaknesses that should > really be addressed, hopefully I'll have some time to write patches > for some of this work. I know Ondrej had proposed a few improvements as well. I'd like to see those reposted so that we can look at it and if possible, have them merged in. Siddhesh