Date: Mon, 05 Jul 2004 22:23:31 +0900 From: Eitarou Kamo <e-kamo@trio.plala.or.jp> To: David Schultz <das@FreeBSD.ORG>, freebsd-hackers@FreeBSD.ORG Subject: Re: Article on Sun's DTrace Message-ID: <40E95653.6020705@trio.plala.or.jp> In-Reply-To: <20040705103747.GA20487@VARK.homeunix.com> References: <20040630011635.GF34501@empiric.dek.spc.org> <20040705103747.GA20487@VARK.homeunix.com>
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Hi, David Schultz wrote: >On Wed, Jun 30, 2004, Bruce M Simpson wrote: > > >>This recently caught my eye: >>http://www.samag.com/documents/s=9171/sam0406h/0406h.htm >> >>There are a number of good sounding suggestions in there. >> >> > >DTrace is pure magic. It would be well worth your time to install >Solaris 10 just to try out DTrace for a day. Keep in mind, >however, that it took them several man-years to develop just for >sparc64 and x86, so we're not talking about a port of it any time >soon... > > See also, http://www.sun.com/bigadmin/content/dtrace/ I haven't seen above well yet. But A article says that DTrace sounds like 30,000 lines of debug print. I have written about 50 lines of debug print in my 4.10-R kernel to chase my umass issue. If the output of it exists on a trace log file, It may be one of DTrace feature. I saw the some sort of debug print lines in the kernel source of 4.10-R. If you enable them and gather the information to a file, it may be nearly equal DTrace. But I can't warrant or guarantee you the performance. DTrace may be a kinda elegant debug mode kernel, I guess. Eitarou -- *********************** 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 ************************************************************************
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