From owner-svn-src-all@FreeBSD.ORG Tue Feb 10 18:30:41 2015 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 45D5EAAB; Tue, 10 Feb 2015 18:30:41 +0000 (UTC) Received: from st11p02mm-asmtp002.mac.com (st11p02mm-asmtpout002.mac.com [17.172.220.237]) (using TLSv1.2 with cipher DHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 11A21220; Tue, 10 Feb 2015 18:30:40 +0000 (UTC) Received: from st11p02mm-spool002.mac.com ([17.172.220.247]) by st11p02mm-asmtp002.mac.com (Oracle Communications Messaging Server 7.0.5.35.0 64bit (built Dec 4 2014)) with ESMTP id <0NJK00J8CJERBC20@st11p02mm-asmtp002.mac.com>; Tue, 10 Feb 2015 18:30:31 +0000 (GMT) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.13.68,1.0.33,0.0.0000 definitions=2015-02-10_06:2015-02-10,2015-02-10,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=7.0.1-1412110000 definitions=main-1502100174 MIME-version: 1.0 Received: from localhost ([17.172.220.163]) by st11p02mm-spool002.mac.com (Oracle Communications Messaging Server 7.0.5.33.0 64bit (built Aug 27 2014)) with ESMTP id <0NJK00KL7JERZL80@st11p02mm-spool002.mac.com>; Tue, 10 Feb 2015 18:30:27 +0000 (GMT) To: John Baldwin From: Rui Paulo Subject: Re: svn commit: r278479 - in head: etc sys/kern Date: Tue, 10 Feb 2015 18:30:27 +0000 (GMT) X-Mailer: iCloud MailClient15A99 MailServer14H18.17359 X-Originating-IP: [12.218.212.178] Message-id: <8e5503e1-755c-49e4-ab4d-a0ad1ae91f97@me.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.18-1 Cc: "svn-src-head@freebsd.org" , Adrian Chadd , "src-committers@freebsd.org" , "svn-src-all@freebsd.org" X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 10 Feb 2015 18:30:41 -0000 On Feb 10, 2015, at 07:37 AM, John Baldwin wrote:=0AThat= wasn't really my question. My question was if we want distinct streams =0A= or if we want want unified stream. Having a unified stream might very well= =0Amake sense (and if so we could rename devd to make that more obvious).= =0A=0AI'm fine with renaming devd to eventd or something else, but Ian was= saying that he's worried about the number of notifications that devd has = to process. =C2=A0I'm not sure that's a real problem at this point, though= . =C2=A0On freefall, devd used 0.07 seconds of CPU time and has been runni= ng for a 1 day and a half. =C2=A0On my BeagleBone, devd used 0.61 seconds = of CPU time and it has been up for 5 days and a half. =C2=A0 On my VM that= has been up for 5 days and a half, it used 4 seconds of CPU time. =C2=A0R= enaming sounds like a good idea and it looks like we could leave the optim= isations to a later time.=0A=0AAnother thing I had in mind (which is more = work) was to abstract the devctl kernel code in an API which could make it= easy to fan out the notifications to multiple /dev devices. =C2=A0However= , that may be overkill.=