From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from 26.mail-out.ovh.net ([91.121.27.225]) by linuxtogo.org with smtp (Exim 4.69) (envelope-from ) id 1PEIoy-0006ez-Ns for openembedded-devel@lists.openembedded.org; Fri, 05 Nov 2010 10:42:57 +0100 Received: (qmail 30654 invoked by uid 503); 5 Nov 2010 09:46:45 -0000 Received: from b9.ovh.net (HELO mail428.ha.ovh.net) (213.186.33.59) by 26.mail-out.ovh.net with SMTP; 5 Nov 2010 09:46:45 -0000 Received: from b0.ovh.net (HELO queueout) (213.186.33.50) by b0.ovh.net with SMTP; 5 Nov 2010 11:42:05 +0200 Received: from pac33-2-82-240-38-71.fbx.proxad.net (HELO ?192.168.1.15?) (ebenard%eukrea.com@82.240.38.71) by ns0.ovh.net with SMTP; 5 Nov 2010 11:42:04 +0200 Message-ID: <4CD3D16C.70901@eukrea.com> Date: Fri, 05 Nov 2010 10:42:04 +0100 From: =?UTF-8?B?RXJpYyBCw6luYXJk?= User-Agent: Mozilla/5.0 (X11; U; Linux i686; fr; rv:1.9.2.12) Gecko/20101027 Thunderbird/3.1.6 MIME-Version: 1.0 To: openembedded-devel@lists.openembedded.org References: <1288864342-20973-1-git-send-email-eric@eukrea.com> <4CD2FAF0.4080905@freyther.de> <4CD305FC.7070305@eukrea.com> <4CD3CF1E.4040804@freyther.de> In-Reply-To: <4CD3CF1E.4040804@freyther.de> X-Ovh-Tracer-Id: 15090436452347653449 X-Ovh-Remote: 82.240.38.71 (pac33-2-82-240-38-71.fbx.proxad.net) X-Ovh-Local: 213.186.33.20 (ns0.ovh.net) X-SA-Exim-Connect-IP: 91.121.27.225 X-SA-Exim-Mail-From: eric@eukrea.com X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on discovery X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=AWL,BAYES_00 autolearn=ham version=3.2.5 X-SA-Exim-Version: 4.2.1 (built Wed, 25 Jun 2008 17:20:07 +0000) X-SA-Exim-Scanned: Yes (on linuxtogo.org) Subject: Re: [PATCH/RFC] qt4-embedded: tune QT_ARCH for armv6 X-BeenThere: openembedded-devel@lists.openembedded.org X-Mailman-Version: 2.1.11 Precedence: list Reply-To: openembedded-devel@lists.openembedded.org List-Id: Using the OpenEmbedded metadata to build Distributions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 05 Nov 2010 09:42:57 -0000 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Hi, Le 05/11/2010 10:32, Holger Freyther a écrit : > On 11/04/2010 08:14 PM, Eric Bénard wrote: >> in the painting engine, from what I saw in the .h, the asm optimisations are >> only enabled when using ARM RCVT compiler and not when using gcc but I have >> not checked everywhere in the code so I'm not sure of this. > > that is something else, I also have a partially applied C implementation that > appears to be faster than the brute force armv6 code. > OK where is the code you are talking about in qt ? > One benefit of using armv6 is that the atomic code will use a different > implementation (ldrex,strex IIRC instead of swp). In any case please use > something like qttracereply to see if passing armv6 is giving any benefit at all. > I can, do you have a quick howto run this ? One thing : what I see here is that qtdemo was crashing after a random time and now (with armv6) it runs stable for hours. Eric