From owner-freebsd-current@freebsd.org Tue May 31 04:31:51 2016 Return-Path: Delivered-To: freebsd-current@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 54BA6B550D2 for ; Tue, 31 May 2016 04:31:51 +0000 (UTC) (envelope-from mmacy@nextbsd.org) Received: from sender163-mail.zoho.com (sender163-mail.zoho.com [74.201.84.163]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 48BE71F21 for ; Tue, 31 May 2016 04:31:50 +0000 (UTC) (envelope-from mmacy@nextbsd.org) Received: from mail.zoho.com by mx.zohomail.com with SMTP id 1464669100339478.16268605313167; Mon, 30 May 2016 21:31:40 -0700 (PDT) Date: Mon, 30 May 2016 21:31:40 -0700 From: Matthew Macy To: "Matthias Apitz" Cc: "" Message-ID: <1550514d8fe.cc2d189b33647.6378517539401453661@nextbsd.org> In-Reply-To: <20160530143726.GA2418@c720-r292778-amd64.oa.oclc.org> References: <20160530143726.GA2418@c720-r292778-amd64.oa.oclc.org> Subject: Re: r300951 make buildworld duration 18h MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Priority: Medium User-Agent: Zoho Mail X-Mailer: Zoho Mail X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 31 May 2016 04:31:51 -0000 ---- On Mon, 30 May 2016 07:37:26 -0700 Matthias Apitz wrote ---- > > Hello, > > Yesterday I pulled via svn co ... a fresh r300951 and started the buildworld as > > # make -j2 buildworld > > it ended today at lunchtime after 18 hours. The laptop has 2x Intel Atom 1.6GHz > and 1 GByte RAM and was otherwise unused. Is this the normal buildworld time of > today? I think it spent most of the time in building the llvm... > I never build on any of my laptops. I have a 8-thread VM running FreeBSD on a new-ish 6-core Broadwell. It builds world in 35-45 minutes and a new kernel in ~3-5 minutes. I mount it over NFS and install to the laptops when I want to update. Obviously if you only have this Atom based machine then that's not a luxury you have. If that's the case I'd install llvm/clang from ports and skip both clangs from the build. I'd guess it's probably 70+% of the buildworld time on my system and possibly > 80% on yours due to the large C++ memory usage. -M