From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from hetzner.pbcl.net (mail.pbcl.net [88.198.119.4]) by mail.openembedded.org (Postfix) with ESMTP id EE072771B3 for ; Wed, 3 Feb 2016 20:58:06 +0000 (UTC) Received: from blundell.swaffham-prior.co.uk ([91.216.112.25] helo=e130.local) by hetzner.pbcl.net with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1aR4V4-0004Cn-B2; Wed, 03 Feb 2016 21:58:06 +0100 Message-ID: <1454533078.7421.57.camel@pbcl.net> From: Phil Blundell To: Khem Raj Date: Wed, 03 Feb 2016 20:57:58 +0000 In-Reply-To: References: <56B0AE88.3090103@siemens.com> <1454446338.7421.45.camel@pbcl.net> <46DD8494-2C7E-44B8-8793-12228FD56738@gmail.com> <1454532510.7421.54.camel@pbcl.net> X-Mailer: Evolution 3.12.9-1+b1 Mime-Version: 1.0 Cc: Patches and discussions about the oe-core layer Subject: Re: Default value for FULL_OPTIMIZATION X-BeenThere: openembedded-core@lists.openembedded.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Patches and discussions about the oe-core layer List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Feb 2016 20:58:09 -0000 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit On Wed, 2016-02-03 at 12:51 -0800, Khem Raj wrote: > On Wed, Feb 3, 2016 at 12:48 PM, Phil Blundell wrote: > > On Tue, 2016-02-02 at 22:17 -0800, Khem Raj wrote: > >> -pipe does speed up build time so its an optimization. > > > > How much does it really speed it up by? I seem to recall the effect was > > fairly negligible, but maybe I am remembering that wrong. > > it does not create files for intermediate objects so if you have slow > media it can be significant > but if you have SSDs then it might be diminished. The files go in /tmp though, right? Even if that isn't a tmpfs, which I think it is on almost all systems nowadays, they will almost certainly just sit in the buffer cache and never actually get written to the disk. p.