From owner-freebsd-hackers@FreeBSD.ORG Thu Jul 8 04:20:26 2004 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 307E216A4CE for ; Thu, 8 Jul 2004 04:20:26 +0000 (GMT) Received: from mps9.plala.or.jp (c152002.vh.plala.or.jp [210.150.152.2]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1D9E543D39 for ; Thu, 8 Jul 2004 04:20:25 +0000 (GMT) (envelope-from e-kamo@trio.plala.or.jp) Received: from msvc1.plala.or.jp ([172.23.8.209]) by mps9.plala.or.jp with SMTP id <20040708042018.UFFM14773.mps9.plala.or.jp@msvc1.plala.or.jp> for ; Thu, 8 Jul 2004 13:20:18 +0900 Received: ( 19729 invoked from network); 8 Jul 2004 13:20:17 +0900 X-SVCK: Received: from unknown (HELO mpb1.plala.or.jp) (172.23.8.16) by msvc1 with SMTP; 8 Jul 2004 13:20:16 +0900 Received: from trio.plala.or.jp ([219.25.148.126]) by mpb1.plala.or.jp with ESMTP id <20040708042016.YXVW19716.mpb1.plala.or.jp@trio.plala.or.jp>; Thu, 8 Jul 2004 13:20:16 +0900 Message-ID: <40ECCD0D.7030703@trio.plala.or.jp> Date: Thu, 08 Jul 2004 13:26:53 +0900 From: Eitarou Kamo User-Agent: Mozilla/5.0 (Windows; U; Win98; ja-JP; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: ja MIME-Version: 1.0 To: David Schultz , freebsd-hackers@FreeBSD.ORG References: <20040706120130.3DF9816A57D@hub.freebsd.org> <20040706101140.T92636@bowser.eecs.harvard.edu> <40EB9A46.2050409@trio.plala.or.jp> <20040708034845.GA59801@VARK.homeunix.com> In-Reply-To: <20040708034845.GA59801@VARK.homeunix.com> X-Enigmail-Version: 0.76.8.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: Article on Sun's DTrace X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 08 Jul 2004 04:20:26 -0000 Hi David, David Schultz wrote: >On Wed, Jul 07, 2004, Eitarou Kamo wrote: > > >>FreeBSD has good features such as jail, chroot e.t.c. which can controll >> >> > >Solaris 10 has these features, too, but I'm not sure what that has >to do with DTrace. > > If You use the feature with DTrace like tool, You can operate it in parallel. This is just a idea. I know Sol10 has chroot or zfs which behave like jail. What I'd like to say is that you need not insist on just DTrace you can develop original one. > > > >The page referenced earlier in this thread pointed out that 6 >staff-years went into DTrace. That's accurate, and we're not >talking about part-time employees or people who don't know what >they're doing. The D compiler aside, this is not a small matter >of programming that can just be ported to a new OS or machine >architecture in a few months. > > I think so. If you develop the DTrace like tool, you need the resources at least equivalent with DTrace team, I guess. If you do, your develop team will make any action to get a resources. >That said, there is prior work in this area, such as: >http://oss.software.ibm.com/developer/opensource/linux/projects/dprobes/ >But these other efforts don't come close to DTrace. > > > -- *********************** Eitarou Kamo Tel. +81 75 7035997 Fax +81 75 7035997 VoIP 050 10585997(domestic only) e-mail e-kamo@trio.plala.or.jp For business: Feel free to mail me(above), please. Donation http://www.PayPal.Com GPG FingerPrint: 032D FDF9 D27B 23F7 9A81 BF4C 626C FBAA BC3A 9895 ************************************************************************