From owner-freebsd-current@FreeBSD.ORG Tue Apr 16 19:57:18 2013 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id AA5D0F08 for ; Tue, 16 Apr 2013 19:57:18 +0000 (UTC) (envelope-from nparhar@gmail.com) Received: from mail-pa0-f48.google.com (mail-pa0-f48.google.com [209.85.220.48]) by mx1.freebsd.org (Postfix) with ESMTP id 8948B1381 for ; Tue, 16 Apr 2013 19:57:18 +0000 (UTC) Received: by mail-pa0-f48.google.com with SMTP id lj1so517677pab.35 for ; Tue, 16 Apr 2013 12:57:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-received:sender:message-id:date:from:user-agent:mime-version:to :subject:content-type:content-transfer-encoding; bh=gjlWU9dlfNbWLYx4afk2rQjLMMpCMHyTEmO8SUDjMfY=; b=td7h7ojU6aGgEn6zd2LbU+QadRO+q4CvcrEZIBwS6vPQY0b25P8gAit3hgHx52fJjx ViD9mFHI1kpvD4iqXV9ceCSwEpeUjhNHdMlNvX9apZp3Q5tOLDQciX8SecfTyOlazPj6 bOnVJQFlTrxH6GspZ2JoUS2wTbhDNJG5RTnrj6MV0GgLitgB9R7u3Q8zklT52jy9kRIp rnhj1DouUAu2JJmNhjG4bfoK9biD9L6r+Zdb2hsq1lt3K26vedO/N1Zsui/EoHGgE6dd QgB+tqqRrGn5bm6TuzOtpdbZpcfAd6oaDPTklKStJp6vgNRTcivEd1wYrc5j5OHrKmGH HMtQ== X-Received: by 10.66.119.202 with SMTP id kw10mr4951918pab.181.1366142232008; Tue, 16 Apr 2013 12:57:12 -0700 (PDT) Received: from [10.192.166.0] (stargate.chelsio.com. [67.207.112.58]) by mx.google.com with ESMTPS id j13sm3849698pat.17.2013.04.16.12.57.09 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 16 Apr 2013 12:57:10 -0700 (PDT) Sender: Navdeep Parhar Message-ID: <516DAD14.9020307@FreeBSD.org> Date: Tue, 16 Apr 2013 12:57:08 -0700 From: Navdeep Parhar User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:17.0) Gecko/20130403 Thunderbird/17.0.5 MIME-Version: 1.0 To: FreeBSD Current Subject: DTrace gone quiet? Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.14 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, 16 Apr 2013 19:57:18 -0000 I just upgraded my kernel and userspace to head (r249552) and I notice that DTrace doesn't output anything until I hit ctrl-c. All previous "hits" on the probe appear lost. For example: # dtrace -n 'fbt::ether_output:entry' dtrace: description 'fbt::ether_output:entry' matched 1 probe (No output here. I waited a long time before the ctrl-c and I know the system is actively transmitting and receiving Ethernet traffic). ^C CPU ID FUNCTION:NAME 9 29354 ether_output:entry 8 29354 ether_output:entry 8 29354 ether_output:entry 8 29354 ether_output:entry Can anyone confirm or contradict this on a recent HEAD (around r249552 in my case)? Regards, Navdeep