From owner-freebsd-stable@FreeBSD.ORG Sun Jan 27 17:27:56 2013 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 6F4ADB00; Sun, 27 Jan 2013 17:27:56 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-wi0-f177.google.com (mail-wi0-f177.google.com [209.85.212.177]) by mx1.freebsd.org (Postfix) with ESMTP id AD1EAD1C; Sun, 27 Jan 2013 17:27:55 +0000 (UTC) Received: by mail-wi0-f177.google.com with SMTP id hm2so832204wib.4 for ; Sun, 27 Jan 2013 09:27:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:x-received:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; bh=hYASEW6KdIjYU/9HQt6//nFVimtLiKZoZnz+kXvA43s=; b=wmAWPL6nSxmhWVJiha/KXX1EIcE5j7KzE0KmpH8Ci2MMXWl49sjXgulDr3WW13bZUx z7fgmyXv1ki/MpnKlY5I7coDpGq3hVYrmPx5Nhl4d3oIuCpKnymL2df1UfVekG/2sYLK JahR3FZTBFzn17WbuNBKQ0bsCIQ37LgtlQFzMJS9ZdLp4X6639G32KXs2uuesjK62CzA PwLfbCXvULTAMTzucDr2kp6vqdpEXkQ8HsRaLPBfaMKklyail3Nd3Uy9nevXO/2sN7OA 0oRLW+W3s4c3jPRnS8VED26fy7YWBOGO93rgsZa0QSpVHltzidbykXfyWWHUfHe9dOe8 xSFw== MIME-Version: 1.0 X-Received: by 10.194.172.197 with SMTP id be5mr17202047wjc.20.1359307669422; Sun, 27 Jan 2013 09:27:49 -0800 (PST) Sender: adrian.chadd@gmail.com Received: by 10.216.67.6 with HTTP; Sun, 27 Jan 2013 09:27:49 -0800 (PST) In-Reply-To: <5103ACAE.5060406@FreeBSD.org> References: <1358780588.32417.414.camel@revolution.hippie.lan> <1358783667.32417.434.camel@revolution.hippie.lan> <50FFFA8B.4040008@FreeBSD.org> <5103ACAE.5060406@FreeBSD.org> Date: Sun, 27 Jan 2013 09:27:49 -0800 X-Google-Sender-Auth: UGjqG2fbcK3x13M49uPKjK4ZV38 Message-ID: Subject: Re: time issues and ZFS From: Adrian Chadd To: Andriy Gapon Content-Type: text/plain; charset=ISO-8859-1 Cc: freebsd-stable@freebsd.org, Ian Lepore X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 27 Jan 2013 17:27:56 -0000 On 26 January 2013 02:15, Andriy Gapon wrote: > on 23/01/2013 18:20 Adrian Chadd said the following: >> It may be a quirk of an older 9.x, which is fixed in -HEAD. It may be >> a quirk of the older generation celeron hardware - in which case, we >> need to tell the user somehow.. > > This is not software related at all. It's the hardware feature (or its absence). > I wonder if your celerons report PBE feature. What am I looking for? And personally, requiring (much) more recent hardware to get sane/correct (btu inefficient) behaviour out of the timekeeping framework is a little .. suboptimal. :) Adrian