From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932252AbWCCXOA (ORCPT ); Fri, 3 Mar 2006 18:14:00 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932420AbWCCXN7 (ORCPT ); Fri, 3 Mar 2006 18:13:59 -0500 Received: from sneakemail.com ([38.113.6.61]:40427 "HELO monkey.sneakemail.com") by vger.kernel.org with SMTP id S932252AbWCCXN7 (ORCPT ); Fri, 3 Mar 2006 18:13:59 -0500 Date: Fri, 03 Mar 2006 18:12:16 -0500 From: "Chuck Martin" Subject: Realtime Kernel Slows My Clock To: linux-kernel@vger.kernel.org Message-ID: <28925-53282@sneakemail.com> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT Content-disposition: inline User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I've recently been trying to compile a realtime kernel for audio work, and am having a problem. The clock seems to run very slow, causing my time to be off. Commands with a delay are also slowed from 10 to 30 times what they should be. For example, "sleep 1" will sometimes take up to thirty seconds. I originally tried both patch-2.6.15-rt12 and patch-2.6.15-rt16 applied to both kernel 2.6.15 and 2.6.15.2, and after having no luck with them, I tried patch-2.6.15-rt1 applied to kernel 2.6.15, and all of them gave the same results, but both of these kernels work fine unpatched. I've since tried a number of older patched kernels, and it seems the problem originated with patch-2.6.13-rt13 (patch-2.6.13-rt12 does not exhibit the problem). I've brought this up on the linux-audio-users mailing list, and no one seems to know what the problem might be. It was suggested that I post my problem to this list (and CC Ingo Molnar), which is why I'm here. Does anyone have any ideas what the problem might be? I'm not subscribed to the list (I would, but I don't know if I want that much e-mail at the moment), so please CC me with any replies. Thanks. Chuck