Date: Sat, 6 Mar 2010 15:09:51 +0000 (GMT) From: Robert Watson <rwatson@FreeBSD.org> To: Daniel Braniss <danny@cs.huji.ac.il> Cc: freebsd-stable@freebsd.org Subject: Re: is dtrace usable? Message-ID: <alpine.BSF.2.00.1003061508020.16631@fledge.watson.org> In-Reply-To: <E1Nnv0H-00020A-9M@kabab.cs.huji.ac.il> References: <E1Nnv0H-00020A-9M@kabab.cs.huji.ac.il>
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On Sat, 6 Mar 2010, Daniel Braniss wrote: > link_elf_obj: symbol lapic_cyclic_clock_func undefined > > when trying > kldload dtraceall this is with a fearly resent 8-stable > > I'm trying to help Rick Maclem debug the NSF/UDP problem, and I thought it > would be a good chance to learn dtrace, but :-( Take a look at the DTrace configuration information here: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/dtrace.html And here: http://wiki.freebsd.org/DTrace It looks like options KDTRACE_HOOKS may not be defined in your kernel configuration, but there are some other details, such as WITH_CTF=1, that you'll also need to make sure are appropriately set. Robert
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