From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <robin.jarry@6wind.com> Received: from mail-wm0-f45.google.com (mail-wm0-f45.google.com [74.125.82.45]) by dpdk.org (Postfix) with ESMTP id 5E3081023 for <dev@dpdk.org>; Tue, 24 Jan 2017 13:31:13 +0100 (CET) Received: by mail-wm0-f45.google.com with SMTP id r144so206421782wme.1 for <dev@dpdk.org>; Tue, 24 Jan 2017 04:31:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=6wind-com.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=yfscpVJsJLVseAnZ65ID0khXQeV5YRKrdvlaObHzpzg=; b=Zc/OPwBgs+aJgoVQn385rVHgSf2ly7VylxhohFrFGVPkrPurAHg3uVjvZ66Avfyy8G 0PQnPSdv6RMCnif7usfYXC2BlqVrjLVjvODb+MP1WjyLwu5DGNj91IlJWCxXl17F4y64 TZbyYygv5ahQr0oJjsug8Tw0KbZ9mD4jfCQcW+XU+Gdu7zeRjJWzMvj9kMQT6sC/z8vX dt+/+3zilTjtGzTfnejeR+4QiSREKB/BNORmzwwIX2PH4hp4ASBI81g8yeEDMzCNbXZL TCaDHGDS4DMkmcTCSS5zpXCeQac5vowfGcceDcA3GHNgghUk1YlZRvUQ+8CIveBFzjIV qVzw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=yfscpVJsJLVseAnZ65ID0khXQeV5YRKrdvlaObHzpzg=; b=WUOXhgYLNlO2UIjjDVf2bEq0PPSuntmlN5KeXFgb977oBhmeytJ7Jrdmk6fFsf60zo Lhnj7X6rP5oL2kr6HVys2EMG8dKQqmqVUtmjzY1iGlAwVJ7Fdu8M0XASEzdyE9uMrh2b UTQHC9XuH9kcDDkKZwVCj2rozGFWlJEoPbiglv9RcHjONjemXbc84xWsIZ+XoZUXFoKe ljWTaMWwiUxkAGwtVIk++0bktusypfYbm2FIwmkLbXXhaW1RTQS56ka0ffP+hOLVm6lZ t1UWseNGN8KMdyZzhbHxp8lM478vAz3DxLV3ihwHmmD8P2s9AwlEtNhTQ3O+j2ZjfYAc yhlA== X-Gm-Message-State: AIkVDXLJYoqs9Dv4S/ZhKwnUdJRbDJpS017jXq/xYe/04PqMCljmrQZlNnoMFd7LCRxAkNgg X-Received: by 10.28.46.73 with SMTP id u70mr16985211wmu.54.1485261073122; Tue, 24 Jan 2017 04:31:13 -0800 (PST) Received: from 6wind.com (host.78.145.23.62.rev.coltfrance.com. [62.23.145.78]) by smtp.gmail.com with ESMTPSA id x135sm26133436wme.23.2017.01.24.04.31.12 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 24 Jan 2017 04:31:12 -0800 (PST) Date: Tue, 24 Jan 2017 13:31:06 +0100 From: Robin Jarry <robin.jarry@6wind.com> To: Bruce Richardson <bruce.richardson@intel.com> Cc: Olivier Matz <olivier.matz@6wind.com>, dev@dpdk.org, ferruh.yigit@intel.com, thomas.monjalon@6wind.com Message-ID: <20170124123106.uprr62tzlwquhbvj@6wind.com> References: <20170123181813.00567e47@platinum> <1485191953-2613-1-git-send-email-olivier.matz@6wind.com> <20170124111949.6jcif4uliwg6bgxv@6wind.com> <20170124112633.GA156840@bricha3-MOBL3.ger.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20170124112633.GA156840@bricha3-MOBL3.ger.corp.intel.com> User-Agent: NeoMutt/20161126 (1.7.1) Subject: Re: [dpdk-dev] [PATCH] mk: optimize directory dependencies X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions <dev.dpdk.org> List-Unsubscribe: <http://dpdk.org/ml/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://dpdk.org/ml/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <http://dpdk.org/ml/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> X-List-Received-Date: Tue, 24 Jan 2017 12:31:13 -0000 Hi Bruce, 2017-01-24, Bruce Richardson: >what are the differences in the patches like when doing a build rather >than just a config? If the build is minutes long because of slow IO, >is the extra 10 seconds really going to make that much of a difference? I agree there is no significant difference in total build time (config included) when using -j8 (about ~15s). And I understand your concern about the complexity of the patch in the second solution. But the way dependencies are computed is overly complex and I feel that parallelizing is just hiding dust under the carpet. The result after the second solution is cleaner (to me): we get rid of an obscure shell script and we stop piping make output to files thus restoring the possibility to use make -d to debug problems. And while the goal is to reduce the config time, why not go all the way? -- Robin