From owner-freebsd-questions@FreeBSD.ORG Sat Feb 20 22:13:06 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D9FF7106566B for ; Sat, 20 Feb 2010 22:13:06 +0000 (UTC) (envelope-from bsam@ipt.ru) Received: from services.ipt.ru (services.ipt.ru [194.62.233.110]) by mx1.freebsd.org (Postfix) with ESMTP id 96BE18FC08 for ; Sat, 20 Feb 2010 22:13:06 +0000 (UTC) Received: from [85.173.16.128] (helo=izar) by services.ipt.ru with esmtpa (Exim 4.54 (FreeBSD)) id 1NixZR-000Bnt-Ce; Sun, 21 Feb 2010 01:13:05 +0300 From: Boris Samorodov To: Dan Nelson References: <97752307@ipt.ru> <20100220202614.GG70798@dan.emsphone.com> <88797383@ipt.ru> <20100220214845.GI70798@dan.emsphone.com> Date: Sun, 21 Feb 2010 01:13:04 +0300 In-Reply-To: <20100220214845.GI70798@dan.emsphone.com> (Dan Nelson's message of "Sat, 20 Feb 2010 15:48:45 -0600") Message-ID: <97757247@ipt.ru> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: freebsd-questions@freebsd.org Subject: Re: strange disk activity X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 20 Feb 2010 22:13:06 -0000 On Sat, 20 Feb 2010 15:48:45 -0600 Dan Nelson wrote: > In the last episode (Feb 20), Boris Samorodov said: > > Are there other possibilities meanwhile? > ktrace -d -i -p 0 ; sleep 10 ; ktrace -C > , then run kdump -m64 and search for large numbers of writes in the output. > "-d -i -p0" selects all current and future children of pid 0, which will > trace all processes. "-m64" limits the I/O dump size to 64 bytes. Impressive! Thanks, Dan, I've got a real new tool. ;-) -- WBR, Boris Samorodov (bsam) Research Engineer, http://www.ipt.ru Telephone & Internet SP FreeBSD Committer, http://www.FreeBSD.org The Power To Serve