From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261628AbUDWW7Y (ORCPT ); Fri, 23 Apr 2004 18:59:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261638AbUDWW7Y (ORCPT ); Fri, 23 Apr 2004 18:59:24 -0400 Received: from fmr05.intel.com ([134.134.136.6]:55960 "EHLO hermes.jf.intel.com") by vger.kernel.org with ESMTP id S261628AbUDWW7X (ORCPT ); Fri, 23 Apr 2004 18:59:23 -0400 From: Mark Gross Organization: Intel To: ganzinger@mvista.com, George Anzinger , lkml Subject: Re: [ANNOUNCE] New high resolution time patch for 2.6.5 kernel Date: Fri, 23 Apr 2004 15:58:42 -0700 User-Agent: KMail/1.5.4 References: <4085D096.2060103@mvista.com> In-Reply-To: <4085D096.2060103@mvista.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200404231558.42994.mgross@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tuesday 20 April 2004 18:38, George Anzinger wrote: > The High Resolution Timers patch for the 2.6.5 kernel has just been posted > on sourceforge. > > This patch provides an extension to the POSIX clocks and timers to define > two new high resolution clocks (CLOCK_REALTIME_HR and CLOCK_MONOTONIC_HR). > The resolution of these clocks can be set at CONFIGURE time, with the > default being 10 micro seconds. The high res clocks can be used with > clock_nanosleep() as well as with the POSIX timers. > > This version uses apic timers to obtain much better accuracy and > simplicity. Wow! for my systems this works really well! The jitter is significantly reduced. It would be cool if this could find its way into a major developmet tree. --mgross