From owner-freebsd-hackers@FreeBSD.ORG Sat Apr 3 12:51:47 2010 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 066BE1065672; Sat, 3 Apr 2010 12:51:47 +0000 (UTC) (envelope-from masoom.shaikh@gmail.com) Received: from mail-pw0-f54.google.com (mail-pw0-f54.google.com [209.85.160.54]) by mx1.freebsd.org (Postfix) with ESMTP id B1FD18FC08; Sat, 3 Apr 2010 12:51:46 +0000 (UTC) Received: by pwi9 with SMTP id 9so2319611pwi.13 for ; Sat, 03 Apr 2010 05:51:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:received:message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=Iw3dPn9RiOXpeB/CBropiE0tCOkCrt36kbNfUr6LRzw=; b=oB3vor3SCV0xjYVxdtFmb+67kutRuh1IlB3Gqd0ByTaT39GcxVj9tLOFblcopMlPOe HftM7x6ol8WSc9fvyGCCcPsxEUzIhwGNNrnrmRAM/AQYLqaBc99cU8VJD5aU9VYezxM+ 9XqfhGq9s0Z/21EhWWwyh7Vs+wCj1iqI6o37U= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=CaYbUpSERD0sreKwIDDVupRfy696pdTwWhBJRzEVjBXi87yi+//Dipf6WfK3fB0CpX GLWV2DjWZQFh0A0ILl5iAW3AKZ4+8o9ZAXh1XXFTNFAC1na/f1BO6Ks+tvZJvYrTCjta 9Ukq8jkzTBUl0h2rj5LvuJwoG+Fiuex+TzTZ8= MIME-Version: 1.0 Received: by 10.114.137.14 with HTTP; Sat, 3 Apr 2010 05:51:46 -0700 (PDT) In-Reply-To: <9bbcef731003281038x33b8a9atc2a81d22aa26468@mail.gmail.com> References: <9bbcef731003280503q4993e5b4ud8d874b8e9c376a9@mail.gmail.com> <9bbcef731003281038x33b8a9atc2a81d22aa26468@mail.gmail.com> Date: Sat, 3 Apr 2010 12:51:46 +0000 Received: by 10.115.133.39 with SMTP id k39mr3184921wan.198.1270299106089; Sat, 03 Apr 2010 05:51:46 -0700 (PDT) Message-ID: From: Masoom Shaikh To: Ivan Voras Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: freebsd-hackers@freebsd.org, freebsd-stable@freebsd.org, freebsd-questions@freebsd.org Subject: Re: random FreeBSD panics X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 03 Apr 2010 12:51:47 -0000 On Sun, Mar 28, 2010 at 5:38 PM, Ivan Voras wrote: > On 28 March 2010 16:42, Masoom Shaikh wrote: > >> lets assume if this is h/w problem, then how can other OSes overcome >> this ? is there a way to make FreeBSD ignore this as well, let it >> result in reasonable performance penalty. > > Very probably, if only we could detect where the problem is. > Try adding "options =A0 =A0 PRINTF_BUFR_SIZE=3D128" to the kernel > configuration file if you can, to see if you can get a less mangled > log outout. > ok, after few days of silence I am back with more questions this time system feels little better, it is able to sustain for more time that what 7.3-RELEASE could FreeBSD raptor 8.0-RELEASE-p2 FreeBSD 8.0-RELEASE-p2 #0: Thu Apr 1 01:20:45 UTC 2010 root@:/usr/obj/usr/src/sys/INSPIRON amd64 I am using KDE4, and when OS freezes, well it freezes, means I cannot change to tty0 and see the panic text, if any it might possibly have spit. the stuck frozen GUI keeps staring there. So the question is how to I capture that panic text ? unfortunately I am not getting core files too, so there is nothing I can pick up hints is there some option (KDB, DDB), so that on panic system drop to debugger ? Masoom Shaikh