From mboxrd@z Thu Jan 1 00:00:00 1970 From: Carsten Emde Subject: Re: config_preempt_RT patch platform support question. Date: Thu, 13 Nov 2008 08:41:49 +0100 Message-ID: <491BDA3D.8040904@osadl.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: RT-Users To: Amir Aharon Return-path: Received: from toro.web-alm.net ([62.245.132.31]:59567 "EHLO toro.web-alm.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751611AbYKMIBy (ORCPT ); Thu, 13 Nov 2008 03:01:54 -0500 In-Reply-To: Sender: linux-rt-users-owner@vger.kernel.org List-ID: Amir, > I work on a project which delivers low latency audio streaming via a > Linux machine. I receive/send audio frames of 4 samples each per > network frame (raw Ethernet) so I expect to have a network interrupt > each 90 microseconds. I use Linux 2.6.26.3-rt7 on different > platforms; unfortunately we encountered problems such as kernel > panics, depend on the platform running... The PREEMPT_RT patches for kernel 2.6.26 are still under development. Please post the various kernel messages you are observing. BTW: The most recent 2.6.26 patch is 2.6.26.6-rt11. > My questions are: How can I have more details on the tests which > where used to evaluate the platform running the config_preempt_RT > (specifically on networking issues)? Does Intel Q6600 2.4GHz (quad > core) has been tested? Are there known issues? Does Xeon x5482 3.2GHz > (x2 meaning octa core) has been tested? Are there known issues? For the time being, linux-2.6.24.7-rt21 is believed to be stable and ready for production. This version has been tested heavily under x86 (slow/fast machines, single/dual/quad core, 32/64 bit) and under various PPC platforms. It has been tested less heavily on ARMs and MIPSes. There are no known issues on x86 platforms. Would you mind to run 2.6.24.7-rt21 on your machines? Carsten.