From owner-freebsd-arch@FreeBSD.ORG Wed Dec 17 21:11:14 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 A0A6D8E3; Wed, 17 Dec 2014 21:11:14 +0000 (UTC) Received: from mail-wg0-x22a.google.com (mail-wg0-x22a.google.com [IPv6:2a00:1450:400c:c00::22a]) (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 2E6671DD7; Wed, 17 Dec 2014 21:11:14 +0000 (UTC) Received: by mail-wg0-f42.google.com with SMTP id k14so5308123wgh.1 for ; Wed, 17 Dec 2014 13:11:12 -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=fxjIFp6v+2H8YMlMjcKx2Fkk2/Jkn9Zmpd3BhRBYVcs=; b=ANVwF92npvx0oOuQFIcBMB47zoWiSEgUSz6xfL9pvq1gmDUUOMtbGL3iYbBVbvcGhy hbQn/TN6RlQITjMp4uubanfzsAMCG2tw4mKIpMoPIV8IgYHBRNEP+KfvNL5ngEIsBYzk D5E3uZP6ZhTEovCY2QBc0GiFnPJixZH+NLEN8XRDuuCq3EnwldUm+mL6koVWU+6nOtRK e21xoobshwfeG6xDcN1zcDq6oXulpe1p8n9dE+y+soa7ybPgcCKi+4rfITDzaml6gzFs Bm9XFc3D+5bcKWNv+/YY3NzbL2aGutjwnOQUhXLbFLujD6H8CFAih+Lh59GIBIM1z+Pz /6pQ== MIME-Version: 1.0 X-Received: by 10.180.20.6 with SMTP id j6mr17690055wie.59.1418850672489; Wed, 17 Dec 2014 13:11:12 -0800 (PST) Sender: adrian.chadd@gmail.com Received: by 10.216.106.195 with HTTP; Wed, 17 Dec 2014 13:11:12 -0800 (PST) In-Reply-To: <70616.1418846174@critter.freebsd.dk> References: <201412161348.41219.jhb@freebsd.org> <20141216233844.GA1490@stack.nl> <2034186.iLaW9EGnEt@ralph.baldwin.cx> <70073.1418837301@critter.freebsd.dk> <70449.1418843354@critter.freebsd.dk> <70616.1418846174@critter.freebsd.dk> Date: Wed, 17 Dec 2014 13:11:12 -0800 X-Google-Sender-Auth: DaSdLLJgh5_LqIJH3oMge6cyAzw 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 21:11:14 -0000 On 17 December 2014 at 11:56, Poul-Henning Kamp wrote: > -------- > In message > , Adrian Chadd writes: > >>> A millisecond is pushing it, all things considered, it would have to >>> be an utterly trivial source file for a utterly trivial language. >> >>Why? Computers can do a ridiculous amount of work in a millisecond. > > Yes, but try it yourself, they mostly don't. > > One millisecond is only about a million instructions if you are lucky, > and in difference from system III, we have put an awful lot of code > between the stuff you want done and the hardware that does it. > > So show me, and I'll believe you. If I can find the code from a few years ago, sure. A lot of stuff from my arts degree is sitting on hard disks in Australia, waiting to be plugged in again. (Next time I come up against this I'll show you. :) -adrian