From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932890AbWF2LTG (ORCPT ); Thu, 29 Jun 2006 07:19:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932888AbWF2LTF (ORCPT ); Thu, 29 Jun 2006 07:19:05 -0400 Received: from outpipe-village-512-1.bc.nu ([81.2.110.250]:55176 "EHLO lxorguk.ukuu.org.uk") by vger.kernel.org with ESMTP id S932890AbWF2LS7 (ORCPT ); Thu, 29 Jun 2006 07:18:59 -0400 Subject: Re: [PATCH] ia64: change usermode HZ to 250 From: Alan Cox To: Jes Sorensen Cc: "Luck, Tony" , John Daiker , John Hawkes , Arjan van de Ven , Tony Luck , Andrew Morton , linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, Jack Steiner , Dan Higgins , Jeremy Higdon In-Reply-To: <44A3AFFB.2000203@sgi.com> References: <617E1C2C70743745A92448908E030B2A27FC5F@scsmsx411.amr.corp.intel.com> <1151578928.23785.0.camel@localhost.localdomain> <44A3AFFB.2000203@sgi.com> Content-Type: text/plain Content-Transfer-Encoding: 7bit Date: Thu, 29 Jun 2006 12:34:59 +0100 Message-Id: <1151580899.23785.7.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.6.2 (2.6.2-1.fc5.5) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Ar Iau, 2006-06-29 am 12:48 +0200, ysgrifennodd Jes Sorensen: > > No need, all current mainstream architectures expose a constant user HZ. > > But you are still going to have the issue where someone installs their > own kernel and apps will break because of this? Getting the distros to > stop publishing a constant HZ is probably the right solution, but more > difficult :( Read what I said - "all current mainstream architectures expose a constant user HZ". The HZ used by the kernel is independant of the HZ seen for /proc etc