From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthias Meier Subject: Re: [4.1.7-rt8][report] Very high cyclictest latency during glmark2 on i915 gpu Date: Wed, 14 Oct 2015 09:51:12 +0200 Message-ID: <561E0970.8050007@gmx.net> References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit To: Christoph Mathys , Linux RT Users Return-path: Received: from mout.gmx.net ([212.227.17.22]:59214 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751501AbbJNHvQ (ORCPT ); Wed, 14 Oct 2015 03:51:16 -0400 In-Reply-To: Sender: linux-rt-users-owner@vger.kernel.org List-ID: > When running cyclictest and the opengl benchmark tool glmark2 I see > pretty severe latency spikes of about 1.8 milliseconds with kernel > 4.1.7-rt8. is there a high interrupt rate on '/proc/interrupts' during glmark2 running compared to the other kernels? Regards Matthias