From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423692AbWKHUsU (ORCPT ); Wed, 8 Nov 2006 15:48:20 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1423694AbWKHUsU (ORCPT ); Wed, 8 Nov 2006 15:48:20 -0500 Received: from pentafluge.infradead.org ([213.146.154.40]:24704 "EHLO pentafluge.infradead.org") by vger.kernel.org with ESMTP id S1423692AbWKHUsT (ORCPT ); Wed, 8 Nov 2006 15:48:19 -0500 Subject: Re: [PATCH] HZ: 300Hz support From: Arjan van de Ven To: Alan Cox Cc: linux-kernel@vger.kernel.org, akpm@osdl.org In-Reply-To: <1163018557.23956.92.camel@localhost.localdomain> References: <1163018557.23956.92.camel@localhost.localdomain> Content-Type: text/plain Organization: Intel International BV Date: Wed, 08 Nov 2006 21:48:17 +0100 Message-Id: <1163018898.3138.388.camel@laptopd505.fenrus.org> Mime-Version: 1.0 X-Mailer: Evolution 2.8.1.1 (2.8.1.1-3.fc6) Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2006-11-08 at 20:42 +0000, Alan Cox wrote: > Fix two things. Firstly the unit is "Hz" not "HZ". Secondly it is useful > to have 300Hz support when doing multimedia work. 250 is fine for us in > Europe but the US frame rate is 30fps (29.99 blah for pedants). 300 > gives us a tick divisible by both 25 and 30, and for interlace work 50 > and 60. It's also giving similar performance to 250Hz. > > I'd argue we should remove 250 and add 300, but that might be excess > disruption for now. the last time 300 was proposed the counter argument was that it was lousy in terms of PIT rounding... did you check that out?