From owner-freebsd-arch@FreeBSD.ORG Wed Dec 17 19:02:47 2014 Return-Path: Delivered-To: arch@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 8663138E; Wed, 17 Dec 2014 19:02:47 +0000 (UTC) Received: from mail-wg0-x236.google.com (mail-wg0-x236.google.com [IPv6:2a00:1450:400c:c00::236]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 17710C59; Wed, 17 Dec 2014 19:02:47 +0000 (UTC) Received: by mail-wg0-f54.google.com with SMTP id l2so21286897wgh.27 for ; Wed, 17 Dec 2014 11:02:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=AbCYKYkXTo+f6bZiOjaOMC9tWszOLoHRX3FgDzd6zsE=; b=ox6i7/vmg7liP7hrvkOwahWYdQpJfiDkr7ZywZiceGUKy7lv4UPd/xvo2jlQe6+kzY HD0bxZZsnLqsVvXcVmohigCRSIG2q9NhCA+aZWxtczVwmFzvqgAL6MrLeonWGrSpelip V4lbBANvgPpPAuW6m3aj1pgaBFj5guRB6qnQ+SVI/7ffmB7BBUKB53wxIK36gOD5Lvn5 devazerquiledWis1du0x1fr2+VkSqJ5Tfa0It8QxbK0sCnDirDaeAFovs4W58I0Cg/x JdZbgUswYA10B+6CjbD2wX8xVS7y92Lfh02dT1Pzry+Tc5W8QOrKI631UAEe+D4x5vqN S48Q== MIME-Version: 1.0 X-Received: by 10.194.108.9 with SMTP id hg9mr36755240wjb.68.1418842965454; Wed, 17 Dec 2014 11:02:45 -0800 (PST) Sender: adrian.chadd@gmail.com Received: by 10.216.106.195 with HTTP; Wed, 17 Dec 2014 11:02:45 -0800 (PST) In-Reply-To: <70073.1418837301@critter.freebsd.dk> References: <201412161348.41219.jhb@freebsd.org> <20141216233844.GA1490@stack.nl> <2034186.iLaW9EGnEt@ralph.baldwin.cx> <70073.1418837301@critter.freebsd.dk> Date: Wed, 17 Dec 2014 11:02:45 -0800 X-Google-Sender-Auth: PBktTGHdnB8V4eg3266N2a_hoe0 Message-ID: Subject: Re: Change default VFS timestamp precision? From: Adrian Chadd To: Poul-Henning Kamp Content-Type: text/plain; charset=UTF-8 Cc: "freebsd-arch@freebsd.org" , Jilles Tjoelker X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 17 Dec 2014 19:02:47 -0000 On 17 December 2014 at 09:28, Poul-Henning Kamp wrote: > -------- > In message <2034186.iLaW9EGnEt@ralph.baldwin.cx>, John Baldwin writes: > >>My bad for not checking that further but for assuming make would be impacted. > > I think it is over 10 years ago when make(1) first started seeing > identical timestamps which wasn't. > > In most Makefiles this doesn't matter, but there are cases, in particular > in less integrated families of makefiles than our own. Surely there has to be better ways of doing this stuff. Computers keep getting faster; it wouldn't be out of the realm of possibility that we could see a compiler read, compile and spit out a .o inside of a millisecond. (Obviously not C++, but..) -adrian