From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mga11.intel.com ([192.55.52.93]) by linuxtogo.org with esmtp (Exim 4.72) (envelope-from ) id 1QtFVp-0002Su-4H for openembedded-core@lists.openembedded.org; Tue, 16 Aug 2011 11:00:41 +0200 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.intel.com with ESMTP; 16 Aug 2011 01:56:03 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.67,379,1309762800"; d="scan'208";a="41863319" Received: from unknown (HELO helios.localnet) ([10.255.18.69]) by fmsmga001.fm.intel.com with ESMTP; 16 Aug 2011 01:56:02 -0700 From: Paul Eggleton To: "Patches and discussions about the oe-core layer" Date: Tue, 16 Aug 2011 09:56:02 +0100 User-Agent: KMail/1.13.6 (Linux/2.6.38-10-generic-pae; KDE/4.6.2; i686; ; ) References: <4E450925.7060101@windriver.com> <1313418691.14274.591.camel@rex> <4E4A2CEE.9050401@windriver.com> In-Reply-To: <4E4A2CEE.9050401@windriver.com> MIME-Version: 1.0 Message-Id: <201108160956.02075.paul.eggleton@linux.intel.com> Subject: Re: [RFC] Performance Issue: Build time increases 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: Tue, 16 Aug 2011 09:00:41 -0000 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit On Tuesday 16 August 2011 09:40:14 Robert Yang wrote: > Thanks for you reply, yes, one build one restart(bitbake core-image-sato, > then restart the computer, and bitbake again) makes the build time stable. > I'm doing this now. Are you using my scripts (scripts/contrib/test_build_time.sh) ? Much of the initial part of the script is ensuring that caches get cleared out; thus rebooting should not be necessary in order to get stable results. Cheers, Paul -- Paul Eggleton Intel Open Source Technology Centre