From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755427Ab2DHNI0 (ORCPT ); Sun, 8 Apr 2012 09:08:26 -0400 Received: from smtprelay04.ispgateway.de ([80.67.29.8]:33690 "EHLO smtprelay04.ispgateway.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755300Ab2DHNIU (ORCPT ); Sun, 8 Apr 2012 09:08:20 -0400 Message-ID: <4F818DBA.3080108@ladisch.de> Date: Sun, 08 Apr 2012 15:08:10 +0200 From: Clemens Ladisch User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.15) Gecko/20110323 Thunderbird/3.1.9 MIME-Version: 1.0 To: Alex Stone CC: linux-kernel@vger.kernel.org Subject: Re: Timing 250 versus 1000 References: <4F815FCE.5040002@yandex.ru> In-Reply-To: <4F815FCE.5040002@yandex.ru> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Df-Sender: bGludXgta2VybmVsQGNsLmRvbWFpbmZhY3Rvcnkta3VuZGUuZGU= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Alex Stone wrote: > Is there an important reason why timing in the kernel is set to 250 by default? It's a compromise. Read kernel/Kconfig.hz. > those of us who write a lot of midi driven work, we're still more or > less required to use some sort of RT kernel to get any degree of > playback timing accuracy. The ALSA sequencer timer stopped using the system timer years ago. And the difference between RT and 'normal' kernels is not the timer frequency. Regards, Clemens