From owner-freebsd-stable@freebsd.org Mon Jan 16 04:37:25 2017 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id BE3EFCB1062 for ; Mon, 16 Jan 2017 04:37:25 +0000 (UTC) (envelope-from eekee57@fastmail.fm) Received: from out2-smtp.messagingengine.com (out2-smtp.messagingengine.com [66.111.4.26]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 957D41170 for ; Mon, 16 Jan 2017 04:37:25 +0000 (UTC) (envelope-from eekee57@fastmail.fm) Received: from compute1.internal (compute1.nyi.internal [10.202.2.41]) by mailout.nyi.internal (Postfix) with ESMTP id 5B48720881 for ; Sun, 15 Jan 2017 23:37:24 -0500 (EST) Received: from web3 ([10.202.2.213]) by compute1.internal (MEProxy); Sun, 15 Jan 2017 23:37:24 -0500 DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=fastmail.fm; h= content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to:x-me-sender :x-me-sender:x-sasl-enc; s=mesmtp; bh=30r1OYNnx12KJcTD5MmB5dxmfr 4=; b=KJdGoBY7LDyokrVX12HvxMiKvgk+KI64sVzWLHw3vU/EMLPlOPiR5lVBNw 3PfbmSlUFZKZy/xLW8E+rjo+M+ztVLbtjtDPIBxxHm+yAfzEu/ZnPgOmcV05si9U MLoH0acdWuM0tkFBAFVQgQzVWSc9aCLI3B6TQxWx6YqmHGvEk= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d= messagingengine.com; h=content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-sender:x-me-sender:x-sasl-enc; s=smtpout; bh=30 r1OYNnx12KJcTD5MmB5dxmfr4=; b=pskBLQ+obMDKHFblnAjxxweJCn1fmvNcOo gGY0NXClH7zd6/tNJWa2pc83W8KEfUnVuDolUEmVXLlJ7ZTWJddRyNQBfGNPOHRJ f271meVfIZXc1wtfQxTMV6O5+Mz/drkwZZsoitX18jvo/gPbov1p+SoK4NojqF46 jJhnaI/Lc= X-ME-Sender: Received: by mailuser.nyi.internal (Postfix, from userid 99) id 2FF439EF44; Sun, 15 Jan 2017 23:37:24 -0500 (EST) Message-Id: <1484541444.449617.848767656.5371B921@webmail.messagingengine.com> From: Ethan Grammatikidis To: freebsd-stable@freebsd.org MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" X-Mailer: MessagingEngine.com Webmail Interface - ajax-d492654e Subject: Re: buildworld build times 10-stable vs. 11-stable References: <20170115171318.GC58505@zxy.spb.ru> Date: Mon, 16 Jan 2017 04:37:24 +0000 In-Reply-To: <20170115171318.GC58505@zxy.spb.ru> X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 16 Jan 2017 04:37:25 -0000 On Sun, Jan 15, 2017, at 05:13 PM, Slawa Olhovchenkov wrote: > On Sun, Jan 15, 2017 at 10:40:42AM -0600, Dan Mack wrote: > > > I have a system which builds world, kernel, install, boot, installworld, > > reboot several times per week. I just noticed that my build times > > increased from about (just cherry picking a couple build logs): > > > > Starting build of FreeBSD SVN [309852] 10.3-STABLE > > Kernel will be GENERIC > > building world ... 90:35 0 > > > > > > Starting build of FreeBSD SVN [312099] 11.0-STABLE > > Kernel will be GENERIC > > building world ... 146:23 0 > > > > before I start bisecting the log files, is there something obvious > > introduced in 11 that I missed that would explain the roughly 50 minute > > difference in my build times? clang? additional subsystems? > > lldb/clang and related. Around 2007 or 2008, I saw a worse jump in compile time when gcc gained specific optimizations for my CPU. There was no clear increase in performance from the optimized software, so I switched back to generic optimizations. I'll be watching out for this now I'm installing FreeBSD. -- I'm too old to use vi.