Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264071AbTE0SQf (ORCPT ); Tue, 27 May 2003 14:16:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264016AbTE0SPg (ORCPT ); Tue, 27 May 2003 14:15:36 -0400 Received: from palrel13.hp.com ([156.153.255.238]:36016 "EHLO palrel13.hp.com") by vger.kernel.org with ESMTP id S264060AbTE0SOp (ORCPT ); Tue, 27 May 2003 14:14:45 -0400 From: David Mosberger MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <16083.44589.855335.531141@napali.hpl.hp.com> Date: Tue, 27 May 2003 11:27:57 -0700 To: george anzinger Cc: Andrew Morton , Richard C Bilson , linux-kernel@vger.kernel.org, Eric Piel Subject: Re: setitimer 1 usec fails In-Reply-To: <3ED28E95.6000701@mvista.com> References: <20030526142555.67a79694.akpm@digeo.com> <3ED28E95.6000701@mvista.com> X-Mailer: VM 7.07 under Emacs 21.2.1 Reply-To: davidm@hpl.hp.com X-URL: http://www.hpl.hp.com/personal/David_Mosberger/ Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 979 Lines: 23 >>>>> On Mon, 26 May 2003 15:00:53 -0700, george anzinger said: George> As a test, you might try your test with HZ=1000 (a number I George> recommend for ia64, if at all possible). I suspect you might have a slightly biased view on this. ;-) Yes, HZ=1000 makes some problems easier to convert ticks to real time, but slower to convert real time to ticks. Besides, the Linux kernel MUST work with (fairly) arbitrary HZ values, because some platforms just don't have much of a choice (e.g., Alpha is pretty much forced to 1024Hz). But, yes, on ia64 we can choose HZ to our liking. If someone presents evidence that shows a real benefit for a value other than 1024, I'm certainly willing to listen. --david - 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/