Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755694AbXLHUwU (ORCPT ); Sat, 8 Dec 2007 15:52:20 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751771AbXLHUwN (ORCPT ); Sat, 8 Dec 2007 15:52:13 -0500 Received: from pentafluge.infradead.org ([213.146.154.40]:59182 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751640AbXLHUwM (ORCPT ); Sat, 8 Dec 2007 15:52:12 -0500 Date: Sat, 8 Dec 2007 12:51:44 -0800 From: Arjan van de Ven To: "Parag Warudkar" Cc: "Ingo Molnar" , "Thomas Gleixner" , "Pallipadi, Venkatesh" , LKML , "Andrew Morton" , "Linus Torvalds" Subject: Re: soft lockup - CPU#1 stuck for 15s! [swapper:0] Message-ID: <20071208125144.734e9f81@laptopd505.fenrus.org> In-Reply-To: <82e4877d0712081246x4d788c36i908916185611fa94@mail.gmail.com> References: <924EFEDD5F540B4284297C4DC59F3DEE38C3C2@orsmsx423.amr.corp.intel.com> <82e4877d0712080710g205ba93ag12ee204b15d70fdb@mail.gmail.com> <82e4877d0712080736v12c1e31at9149655ae000fe50@mail.gmail.com> <20071208154755.GA5255@elte.hu> <82e4877d0712080800j6572734ek78a76cf7bb17a7e0@mail.gmail.com> <20071208191330.GA21186@elte.hu> <82e4877d0712081133y49fec9bfyee30a3010b37c435@mail.gmail.com> <20071208194211.GA579@elte.hu> <82e4877d0712081208u335c968csd1d3e9259cdd2920@mail.gmail.com> <20071208201137.GA13451@elte.hu> <82e4877d0712081246x4d788c36i908916185611fa94@mail.gmail.com> Organization: Intel X-Mailer: Claws Mail 3.0.2 (GTK+ 2.12.1; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1159 Lines: 33 On Sat, 8 Dec 2007 15:46:54 -0500 "Parag Warudkar" wrote: > On Dec 8, 2007 3:11 PM, Ingo Molnar wrote: > > > > * Parag Warudkar wrote: > > > > > But there are still fluctuations under 100% idle - > > > > do you have CONFIG_HIGH_RES_TIMERS=y? > > Yes - NO_HZ=y and HIGH_RES_TIMERS=y. > My ssh connection still died with hpet=disable although this time I > did not see soft lockup message. > Also it randomly gets stuck - suddenly there is a freeze and I can't > type for seconds. > > > these fluctuations would still be OK if they are due to HZ > > granularity. > > > > So are the hpet ones ok too or do they seem off even with HRTIMERS=y? > Just trying to figure out if I should be testing further with hpet > disabled or enabling it is ok. > what chipset is this? (I wonder if there's one where we shouldn't be force-enabling the hpet) -- 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/