From mboxrd@z Thu Jan 1 00:00:00 1970 From: Clemens Ladisch Subject: Re: MIDI playback not keeping steady time with recent kernels Date: Tue, 08 Feb 2011 16:40:08 +0100 Message-ID: <4D5163D8.8010708@ladisch.de> References: <559v18-575.ln1@ppp121-45-136-118.lns11.adl6.internode.on.net> <11c228-725.ln1@ppp121-45-136-118.lns11.adl6.internode.on.net> <4D512EA9.2020909@ladisch.de> <4D515EFD.3040909@internode.on.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from out1.smtp.messagingengine.com (out1.smtp.messagingengine.com [66.111.4.25]) by alsa0.perex.cz (Postfix) with ESMTP id 4CB662436F for ; Tue, 8 Feb 2011 16:39:08 +0100 (CET) In-Reply-To: <4D515EFD.3040909@internode.on.net> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: Arthur Marsh Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org Arthur Marsh wrote: > OK, I applied this patch. > > When the MIDI file was playing: > I still experienced some slow-down and speed-up under heavy load. Is "some" less than previously? It shouldn't be possible to get a speed-up; this looks as if your computer's clock is not stable. Are you using an NTP daemon? What kind of heave load is this? Does the same happen if you execute "yes | tail" in a shell? Regards, Clemens