From owner-freebsd-stable@FreeBSD.ORG Sun Jan 27 17:54:32 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 0F8EC731; Sun, 27 Jan 2013 17:54:32 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140]) by mx1.freebsd.org (Postfix) with ESMTP id ED622E1D; Sun, 27 Jan 2013 17:54:30 +0000 (UTC) Received: from porto.starpoint.kiev.ua (porto-e.starpoint.kiev.ua [212.40.38.100]) by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id TAA21632; Sun, 27 Jan 2013 19:54:29 +0200 (EET) (envelope-from avg@FreeBSD.org) Received: from localhost ([127.0.0.1]) by porto.starpoint.kiev.ua with esmtp (Exim 4.34 (FreeBSD)) id 1TzWR3-000JYk-2d; Sun, 27 Jan 2013 19:54:29 +0200 Message-ID: <510569D3.2030000@FreeBSD.org> Date: Sun, 27 Jan 2013 19:54:27 +0200 From: Andriy Gapon User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:17.0) Gecko/20130121 Thunderbird/17.0.2 MIME-Version: 1.0 To: Adrian Chadd Subject: Re: time issues and ZFS References: <1358780588.32417.414.camel@revolution.hippie.lan> <1358783667.32417.434.camel@revolution.hippie.lan> <50FFFA8B.4040008@FreeBSD.org> <5103ACAE.5060406@FreeBSD.org> In-Reply-To: X-Enigmail-Version: 1.4.6 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: freebsd-stable@FreeBSD.org 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 17:54:32 -0000 on 27/01/2013 19:27 Adrian Chadd said the following: > 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? PBE in dmesg > And personally, requiring (much) more recent hardware to get > sane/correct (btu inefficient) behaviour out of the timekeeping > framework is a little .. suboptimal. :) Well, I never knew about this issue before but I always assumed that the reasonable behavior was the behavior. And I never encountered any evidence to the contrary. -- Andriy Gapon