From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthieu CASTET Subject: IBM test question Date: Thu, 07 Feb 2008 14:49:07 +0100 Message-ID: <47AB0C53.3050703@parrot.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit To: linux-rt-users@vger.kernel.org Return-path: Received: from co203.xi-lite.net ([149.6.83.203]:35216 "EHLO toronto.xi-lite.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754693AbYBGOPV (ORCPT ); Thu, 7 Feb 2008 09:15:21 -0500 Received: from toronto.xi-lite.net (localhost.localdomain [127.0.0.1]) by toronto.xi-lite.net (Postfix) with ESMTP id 0C0E26581E5 for ; Thu, 7 Feb 2008 13:49:58 +0000 (GMT) Received: from mail.xi-lite.com (unknown [193.34.35.248]) by toronto.xi-lite.net (Postfix) with ESMTP id EDB236581E5 for ; Thu, 7 Feb 2008 13:49:57 +0000 (GMT) Sender: linux-rt-users-owner@vger.kernel.org List-ID: hi, I am trying to use some IBM rt test on arm. I define atomic_add to assert(i==1); return ++(v->counter); That's a bit ugly, but that should work for my need. But I have a problem with the sched_latency test. On my platform the thread creation is quite slow (25ms), so with the default value, I got a PERIOD MISSED. I wonder why the test account thread creation time and not compute start at the beginning of the thread ? Also my cpu is quite slow (compared to last intel core or powerpc). For example a sched_jitter run take 6s. Couldn't be some static or runtime configuration to configure the test according to the cpu speed ? Matthieu