From owner-freebsd-current@FreeBSD.ORG Tue Jul 20 02:33:05 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 092B41065673 for ; Tue, 20 Jul 2010 02:33:05 +0000 (UTC) (envelope-from dougb@FreeBSD.org) Received: from mail2.fluidhosting.com (mx21.fluidhosting.com [204.14.89.4]) by mx1.freebsd.org (Postfix) with ESMTP id 9D4FA8FC14 for ; Tue, 20 Jul 2010 02:33:04 +0000 (UTC) Received: (qmail 10899 invoked by uid 399); 20 Jul 2010 02:33:03 -0000 Received: from localhost (HELO laptop.dougb.net) (dougb@dougbarton.us@127.0.0.1) by localhost with ESMTPAM; 20 Jul 2010 02:33:03 -0000 X-Originating-IP: 127.0.0.1 X-Sender: dougb@dougbarton.us Date: Mon, 19 Jul 2010 19:33:01 -0700 (PDT) From: Doug Barton To: Chris Ruiz In-Reply-To: Message-ID: References: <20100717192128.GM2381@deviant.kiev.zoral.com.ua> <20100718103003.GO2381@deviant.kiev.zoral.com.ua> <4C43541C.3060101@FreeBSD.org> <20100718194109.GU2381@deviant.kiev.zoral.com.ua> <4C435CBE.50500@FreeBSD.org> <20100718202338.GI5485@dan.emsphone.com> User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) X-message-flag: Outlook -- Not just for spreading viruses anymore! OpenPGP: id=1A1ABC84 Organization: http://SupersetSolutions.com/ MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: freebsd-current@freebsd.org Subject: Re: Why is intr taking up so much cpu? 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: Tue, 20 Jul 2010 02:33:05 -0000 On Mon, 19 Jul 2010, Chris Ruiz wrote: > On Mon, Jul 19, 2010 at 8:03 PM, Doug Barton wrote: >> I added options KDTRACE_HOOKS to my kernel config, built a new kernel, and >> rebooted. I decided to try your script before things went sideways so I'd >> have an idea of what to expect, and it didn't work: >> >> dtrace: failed to initialize dtrace: DTrace device not available on system >> >> Is there something else I need to do to enable it? > > You need to build the kernel with CTF. Try adding "makeoptions > WITH_CTF=yes" to your config and rebuilding your kernel. There's a > blurb in src/UPDATING about other ways to accomplish the same thing. Thanks for the suggestion, but no improvement. Doing: strings /boot/kernel/kernel | grep -i dtrace Shows lots of dtrace-related entries, unlike previous kernels built without the KDTRACE_HOOKS option, but same error with Dan's script. Doug -- Improve the effectiveness of your Internet presence with a domain name makeover! http://SupersetSolutions.com/ Computers are useless. They can only give you answers. -- Pablo Picasso