From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752230AbcAFWNc (ORCPT ); Wed, 6 Jan 2016 17:13:32 -0500 Received: from albert.ini-tech.com ([192.99.35.19]:55866 "EHLO smtp.ini-tech.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751905AbcAFWNa (ORCPT ); Wed, 6 Jan 2016 17:13:30 -0500 X-Greylist: delayed 532 seconds by postgrey-1.27 at vger.kernel.org; Wed, 06 Jan 2016 17:13:29 EST Date: Wed, 6 Jan 2016 17:04:28 -0500 From: Julien Desfossez To: linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org Cc: lwn@lwn.net Subject: blog post: Monitoring real-time latencies Message-ID: <20160106220428.GA16537@sinkpad.home.lan> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Here is a blog post related to detecting and understanding high interrupt-processing latencies on real-time systems. It is based on a new project called latency_tracker that hooks on the existing kernel tracepoints and executes actions when high latency events occur. https://lttng.org/blog/2016/01/06/monitoring-realtime-latencies/ It is a work in progress, so if you are interested and/or have any comments, please let me know. Thanks, Julien