From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Dan Magenheimer" Subject: RE: (progress on hpet accuracy) and Re: [PATCH] Add a timer mode that disables pending missed ticks Date: Wed, 5 Mar 2008 10:53:32 -0700 Message-ID: <20080305105332234.00000002164@djm-pc> References: <47CEDBA0.20103@virtualiron.com> Reply-To: "dan.magenheimer@oracle.com" Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <47CEDBA0.20103@virtualiron.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Dave Winchell , Keir Fraser Cc: "xen-devel@lists.xensource.com" , Deepak Patel List-Id: xen-devel@lists.xenproject.org > >Do you see and simply ignore warning messages from 64-bit = > Linux when using > >hpet (or otherwise not doing missed-tick handling in Xen), = > by the way? I > >know 64-bit Linux is keen to warn about missed ticks, = > although it does look > >like at least the warning is one shot. > > > > > I see the one shot messages on 64 bit and no complaints at = > all on 4u432 > Linux. > And I have been ignoring them. Code to print the complaints is x86_64-specific in 2.6.9 and 2.6.18. On 64-bit, a command line parameter of "report_lost_ticks" will enable a complaint for every lost tick. As of 2.6.24, the lost ticks message seems to have gone away completely.