From owner-freebsd-stable@FreeBSD.ORG Mon Feb 27 15:36:53 2012 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8CC46106564A for ; Mon, 27 Feb 2012 15:36:53 +0000 (UTC) (envelope-from asmrookie@gmail.com) Received: from mail-lpp01m010-f54.google.com (mail-lpp01m010-f54.google.com [209.85.215.54]) by mx1.freebsd.org (Postfix) with ESMTP id 06AD08FC13 for ; Mon, 27 Feb 2012 15:36:52 +0000 (UTC) Received: by lagz14 with SMTP id z14so7854233lag.13 for ; Mon, 27 Feb 2012 07:36:51 -0800 (PST) Received-SPF: pass (google.com: domain of asmrookie@gmail.com designates 10.152.130.234 as permitted sender) client-ip=10.152.130.234; Authentication-Results: mr.google.com; spf=pass (google.com: domain of asmrookie@gmail.com designates 10.152.130.234 as permitted sender) smtp.mail=asmrookie@gmail.com; dkim=pass header.i=asmrookie@gmail.com Received: from mr.google.com ([10.152.130.234]) by 10.152.130.234 with SMTP id oh10mr12883132lab.35.1330357011721 (num_hops = 1); Mon, 27 Feb 2012 07:36:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; bh=ILHLUvy4usdkZDdIlf9DgWt7+NPF82ViJPTdZZisrSc=; b=bV4rMH2jiEcUJLetKkJCwQXV9M1xPmhoNJ9GExfMpd5jNhO6Oy9n5dWOvM1WDbNxNv r3G5waEoht458Ppj+vSly3Qz6LQxqcoboQW35rrgo6Vnn5mrZTRGlQ52kYQrXulCYC/7 rVwUn/o8XekNX76o4NtnhuGGj3FC6HXHTi/Zo= MIME-Version: 1.0 Received: by 10.152.130.234 with SMTP id oh10mr10761455lab.35.1330357011664; Mon, 27 Feb 2012 07:36:51 -0800 (PST) Sender: asmrookie@gmail.com Received: by 10.112.41.5 with HTTP; Mon, 27 Feb 2012 07:36:51 -0800 (PST) In-Reply-To: References: Date: Mon, 27 Feb 2012 15:36:51 +0000 X-Google-Sender-Auth: IBEhfWzfjYR6MFzyXR4CC8fU4ko Message-ID: From: Attilio Rao To: Arnaud Lacombe Content-Type: text/plain; charset=UTF-8 Cc: freebsd-stable Subject: Re: Complete hang on 9.0-RELEASE X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 Feb 2012 15:36:53 -0000 2012/2/27, Arnaud Lacombe : > Hi, > > On Tue, Feb 14, 2012 at 11:41 AM, Arnaud Lacombe wrote: >> Hi folks, >> >> For the records, I was running some tests yesterday on top of a >> 9.0-RELEASE, amd64, kernel when the box hanged. At the time of the >> hang, the box was running a process with about 2800 threads with heavy >> IPC between 1400 writers and 1400 readers. The box was in single user >> mode (/bin/sh coming from FreeBSD 7.4-STABLE). Here is the beginning >> of the dmesg: >> > This happened a second time, now with FreeBSD 8.2-RELEASE. Complete > machine hang. The machine was running about 4000 threads in a single > process, all the other condition are the same. Arnaud, can you please break in your kernel via KDB, collect the following informations from the DDB prompt: - ps - alltrace - show allpcpu - possibly get a coredump with 'call doadump' and in the end provide all those along with kernel binary and possibly sources somewhere? Thanks, Attilio -- Peace can only be achieved by understanding - A. Einstein