Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964907Ab2EaUR7 (ORCPT ); Thu, 31 May 2012 16:17:59 -0400 Received: from s15943758.onlinehome-server.info ([217.160.130.188]:45155 "EHLO mail.x86-64.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964860Ab2EaUR5 (ORCPT ); Thu, 31 May 2012 16:17:57 -0400 Date: Thu, 31 May 2012 22:18:24 +0200 From: Borislav Petkov To: Steven Rostedt Cc: Mauro Carvalho Chehab , "Luck, Tony" , Linux Edac Mailing List , Linux Kernel Mailing List , Aristeu Rozanski , Doug Thompson , Frederic Weisbecker , Ingo Molnar Subject: Re: [PATCH] RAS: Add a tracepoint for reporting memory controller events Message-ID: <20120531201824.GD16998@aftab.osrc.amd.com> References: <20120531142229.GF14515@aftab.osrc.amd.com> <4FC783EA.80704@redhat.com> <20120531145416.GI14515@aftab.osrc.amd.com> <4FC787BF.3020006@redhat.com> <20120531151408.GJ14515@aftab.osrc.amd.com> <4FC798E2.4000402@redhat.com> <20120531171337.GN14515@aftab.osrc.amd.com> <1338492772.13348.388.camel@gandalf.stny.rr.com> <20120531194207.GC16998@aftab.osrc.amd.com> <1338495092.13348.419.camel@gandalf.stny.rr.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1338495092.13348.419.camel@gandalf.stny.rr.com> 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 Content-Length: 962 Lines: 29 On Thu, May 31, 2012 at 04:11:32PM -0400, Steven Rostedt wrote: > Sure, but how noisy is EDAC? Does it actually fill up the ring > buffers? It could be very quiet (i.e., machine runs with no errors) and it could have bursts where it reports a large number of errors back-to-back depending on access patterns, DIMM health, temperature, sea level and at least a bunch more factors. So I can imagine buffers filling up suddenly and fast, and userspace having hard time consuming them in a timely manner. Every byte counts in such cases. -- Regards/Gruss, Boris. Advanced Micro Devices GmbH Einsteinring 24, 85609 Dornach GM: Alberto Bozzo Reg: Dornach, Landkreis Muenchen HRB Nr. 43632 WEEE Registernr: 129 19551 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/