Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752599AbXJAOcj (ORCPT ); Mon, 1 Oct 2007 10:32:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754768AbXJAOcb (ORCPT ); Mon, 1 Oct 2007 10:32:31 -0400 Received: from one.firstfloor.org ([213.235.205.2]:35426 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751806AbXJAOca (ORCPT ); Mon, 1 Oct 2007 10:32:30 -0400 Date: Mon, 1 Oct 2007 16:32:25 +0200 From: Andi Kleen To: Thomas Gleixner Cc: Mikhail Kshevetskiy , Andi Kleen , linux-kernel@vger.kernel.org Subject: Re: Fwd: x86_64 and AMD with C1E Message-ID: <20071001143225.GA19797@one.firstfloor.org> References: <20071001101532.025d652f@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 757 Lines: 17 > There is work in progress on a patch, which allows to utilize the hpet > timers as per cpu timers. This should solve the problem. Be patient. Given that e.g. ICH8 only has 3 HPET timers that seems doubtful except for the special case of single-socket non hyper threaded dual core. You'll probably do a lot of broadcasting and IPI'ing still. Also you'll likely make user space unhappy which often requires at least one free HPET timer for /dev/rtc. Ok I suppose that could be replaced with a hrtimer. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/