From owner-freebsd-current@FreeBSD.ORG Sat Apr 21 08:19:58 2012 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 5578A106566C; Sat, 21 Apr 2012 08:19:58 +0000 (UTC) (envelope-from lacombar@gmail.com) Received: from mail-wg0-f50.google.com (mail-wg0-f50.google.com [74.125.82.50]) by mx1.freebsd.org (Postfix) with ESMTP id B363B8FC14; Sat, 21 Apr 2012 08:19:57 +0000 (UTC) Received: by wgbds12 with SMTP id ds12so9973350wgb.31 for ; Sat, 21 Apr 2012 01:19:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; bh=tsBZkfMKiBDbn+BB+5tjnbm89RuTJJPWAIGJkg1TmvY=; b=X0tpS5yGg1XF4NIBJqy/D11C5JptuZNu6NGR0rD5K9wQbtkrYjb66fKVlF3c7vckVZ UUCnpMsfPqKsV+sMb5n4c0p4y6fEiUIID8apqV8fk2sfq5wvM9mXl7jr6Q6VOAJOOjZq 2eG0+qCF9wwRJlc+8VAvYNLHQEgQeEJw01vRkFR7ITPcYL5ZgOkqHirbaMJ1jLS13PPM LfrjuAOEuJ+7+e0Jn1XZQ/u86NZeRkhhY3aaaqSsfeHDRVtzb0aTeEfU79hqkvY5BwIu mqYSsALL1ogur1PTkzS8l8N8BRJxvBq7YgR2Dni9va4o9lQSW/RfIK50LP5JOSj9u/yr XCnQ== MIME-Version: 1.0 Received: by 10.180.97.4 with SMTP id dw4mr4334443wib.18.1334996396131; Sat, 21 Apr 2012 01:19:56 -0700 (PDT) Received: by 10.216.49.81 with HTTP; Sat, 21 Apr 2012 01:19:56 -0700 (PDT) In-Reply-To: References: Date: Sat, 21 Apr 2012 04:19:56 -0400 Message-ID: From: Arnaud Lacombe To: freebsd-stable , FreeBSD Current Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: Subject: Re: Complete hang on 9.0-RELEASE X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 21 Apr 2012 08:19:58 -0000 Hi, On Wed, Apr 18, 2012 at 2:22 AM, Arnaud Lacombe wrote: > Hi, > > On Mon, Apr 16, 2012 at 5:50 PM, Arnaud Lacombe wrot= e: >> [...] >> I reproduced the previous problem on 10-CURRENT from r233917, on the >> following platform (here running 8.2-RELEASE): >> >> FreeBSD is a registered trademark of The FreeBSD Foundation. >> FreeBSD 8.2-RELEASE #0: Thu Feb 17 02:41:51 UTC 2011 >> =A0 =A0root@mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64 >> Timecounter "i8254" frequency 1193182 Hz quality 0 >> CPU: Intel(R) Atom(TM) CPU D525 =A0 @ 1.80GHz (1800.01-MHz K8-class CPU) >> =A0Origin =3D "GenuineIntel" =A0Id =3D 0x106ca =A0Family =3D 6 =A0Model = =3D 1c =A0Stepping =3D 10 >> =A0Features=3D0xbfebfbff >> =A0Features2=3D0x40e31d >> =A0AMD Features=3D0x20100800 >> =A0AMD Features2=3D0x1 >> =A0TSC: P-state invariant >> real memory =A0=3D 2136539136 (2037 MB) >> avail memory =3D 2043772928 (1949 MB) >> ACPI APIC Table: <010312 APIC0947> >> FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs >> FreeBSD/SMP: 1 package(s) x 2 core(s) x 2 HTT threads >> =A0cpu0 (BSP): APIC ID: =A00 >> =A0cpu1 (AP/HT): APIC ID: =A01 >> =A0cpu2 (AP): APIC ID: =A02 >> =A0cpu3 (AP/HT): APIC ID: =A03 >> >> Complete system freeze while running about 2400 threads. I had to >> power cycle the system to get it back alive. I discussed a way to >> debug this with attilio@ on freebsd-stable@, but still did not had >> time to implement it. >> > 10-CURRENT from r233917 hanged again today while running 3600 threads. > I enabled WITNESS and INVARIANTS on that specific kernel, secretly > hoping that they would trigger some meaningful information, but they > did not. I would guess my last attempt is to enable SW_WATCHDOG, and > gather some state information out of DDB when the watchdog trigger, if > it does... > > Btw, this issue seems to be specifically happening on Atom/ICH8M > platform running amd64 kernel, as I've never seen it on other > platforms, and yet ran extensive tests. I am not entirely sure it > happens on i386. I would need to check. > For the record, 9.0-RELEASE i386 has been running the test for about 2 days on the D510 platform without any hang so far. I'll keep it running all week-end to give me a better idea. - Arnaud