Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758705AbXIVBTh (ORCPT ); Fri, 21 Sep 2007 21:19:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754962AbXIVBTa (ORCPT ); Fri, 21 Sep 2007 21:19:30 -0400 Received: from ms-smtp-02.nyroc.rr.com ([24.24.2.56]:55591 "EHLO ms-smtp-02.nyroc.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754091AbXIVBT3 (ORCPT ); Fri, 21 Sep 2007 21:19:29 -0400 Date: Fri, 21 Sep 2007 21:19:22 -0400 (EDT) From: Steven Rostedt X-X-Sender: rostedt@gandalf.stny.rr.com To: "Paul E. McKenney" cc: linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org, mingo@elte.hu, akpm@linux-foundation.org, dipankar@in.ibm.com, josht@linux.vnet.ibm.com, tytso@us.ibm.com, dvhltc@us.ibm.com, tglx@linutronix.de, a.p.zijlstra@chello.nl, bunk@kernel.org, ego@in.ibm.com, oleg@tv-sign.ru, srostedt@redhat.com Subject: Re: [PATCH RFC 3/9] RCU: Preemptible RCU In-Reply-To: <20070922003235.GJ9059@linux.vnet.ibm.com> Message-ID: References: <20070910183004.GA3299@linux.vnet.ibm.com> <20070910183412.GC3819@linux.vnet.ibm.com> <20070921152048.GF15697@goodmis.org> <20070921230343.GE9059@linux.vnet.ibm.com> <20070922003235.GJ9059@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1180 Lines: 31 -- On Fri, 21 Sep 2007, Paul E. McKenney wrote: > > > > In any case, I will be looking at the scenarios more carefully. If > > it turns out that GP_STAGES can indeed be cranked down a bit, well, > > that is an easy change! I just fired off a POWER run with GP_STAGES > > set to 3, will let you know how it goes. > > The first attempt blew up during boot badly enough that ABAT was unable > to recover the machine (sorry, grahal!!!). Just for grins, I am trying > it again on a machine that ABAT has had a better record of reviving... This still frightens the hell out of me. Going through 15 states and failing. Seems the CPU is holding off writes for a long long time. That means we flipped the counter 4 times, and that still wasn't good enough? Maybe I'll boot up my powerbook to see if it has the same issues. Well, I'm still finishing up on moving into my new house, so I wont be available this weekend. Thanks, -- Steve - 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/