From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from 93-97-173-237.zone5.bethere.co.uk ([93.97.173.237] helo=tim.rpsys.net) by linuxtogo.org with esmtp (Exim 4.72) (envelope-from ) id 1RuPCS-0001Yb-WE for openembedded-core@lists.openembedded.org; Mon, 06 Feb 2012 15:05:45 +0100 Received: from localhost (localhost [127.0.0.1]) by tim.rpsys.net (8.13.6/8.13.8) with ESMTP id q16DvjVJ018226 for ; Mon, 6 Feb 2012 13:57:45 GMT Received: from tim.rpsys.net ([127.0.0.1]) by localhost (tim.rpsys.net [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 17623-04 for ; Mon, 6 Feb 2012 13:57:41 +0000 (GMT) Received: from [192.168.3.10] ([192.168.3.10]) (authenticated bits=0) by tim.rpsys.net (8.13.6/8.13.8) with ESMTP id q16DvZak018219 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Mon, 6 Feb 2012 13:57:36 GMT Message-ID: <1328536662.24049.19.camel@ted> From: Richard Purdie To: Patches and discussions about the oe-core layer Date: Mon, 06 Feb 2012 13:57:42 +0000 In-Reply-To: <20120206133254.GE3872@jama.jama.net> References: <1328533275.24049.16.camel@ted> <20120206142830.79e73ef1@eb-e6520> <20120206133254.GE3872@jama.jama.net> X-Mailer: Evolution 3.2.2- Mime-Version: 1.0 X-Virus-Scanned: amavisd-new at rpsys.net X-MIME-Autoconverted: from 8bit to quoted-printable by tim.rpsys.net id q16DvjVJ018226 Subject: Re: Performance numbers X-BeenThere: openembedded-core@lists.openembedded.org X-Mailman-Version: 2.1.11 Precedence: list Reply-To: Patches and discussions about the oe-core layer List-Id: Patches and discussions about the oe-core layer List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 06 Feb 2012 14:05:45 -0000 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Mon, 2012-02-06 at 14:32 +0100, Martin Jansa wrote: > On Mon, Feb 06, 2012 at 02:28:30PM +0100, Eric B=C3=A9nard wrote: > > Hi Richard, > >=20 > > Le Mon, 06 Feb 2012 13:01:15 +0000, > > Richard Purdie a =C3=A9crit : > >=20 > > > Its been a while since we had some performance numbers and there we= re > > > recently some questions about how current build time compared to > > > previous numbers. > > >=20 > > > On my 12 core system, build time for qemux86 from scratch is ~42 > > > minutes. This compares favourably with previous numbers from that > > > system. Interestingly, switching to qemumips resulted in a build ti= me of > > > 43 minutes in the same tmpdir suggesting that the native part of th= e > > > bootstrap process isn't the bottleneck. > > >=20 > > > On the quad core (the system used for many of the previous numbers = I'd > > > provided), build time for qemux86 was 105 minutes which again is ro= ughly > > > consistent with where things were for 1.1. > > >=20 > > what are your settings (PARALLEL_MAKE & BB_NUMBER_THREADS) used in > > both cases ? >=20 > And what's the target in your tests? >=20 > My quad core does core-image-minimal-mtdutils for qemux86* from scratch= =20 > in ~ 100 minutes. Sorry, I should have said. Both are for building core-image-sato which is what I usually use as the benchmark. The quad core is running 8 bb threads and 4 parallel make. The 12 core was set to 48/48 but anything over 24 gives the build time above and this is effectively "unlimited" as it very rarely hits 48 tasks in parallel. Cheers, Richard