Date: Mon, 19 Jul 2010 20:19:45 -0500 From: Chris Ruiz <yr.retarded@gmail.com> Cc: freebsd-current@freebsd.org Subject: Re: Why is intr taking up so much cpu? Message-ID: <AANLkTimwRV5jSP6z4_Z51RapkVgfTSHVQrVHONWKjA9B@mail.gmail.com> In-Reply-To: <alpine.BSF.2.00.1007191800460.1873@qbhto.arg> References: <A81B337F-5932-44B1-BDB4-D9DD36332A16@lavabit.com> <alpine.BSF.2.00.1007171103060.1546@qbhto.arg> <F653FF83-D9CF-42A2-AE9A-B8F914090065@FreeBSD.org> <alpine.BSF.2.00.1007171208010.1538@qbhto.arg> <20100717192128.GM2381@deviant.kiev.zoral.com.ua> <alpine.BSF.2.00.1007180113370.1707@qbhto.arg> <20100718103003.GO2381@deviant.kiev.zoral.com.ua> <4C43541C.3060101@FreeBSD.org> <20100718194109.GU2381@deviant.kiev.zoral.com.ua> <4C435CBE.50500@FreeBSD.org> <20100718202338.GI5485@dan.emsphone.com> <alpine.BSF.2.00.1007191800460.1873@qbhto.arg>
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On Mon, Jul 19, 2010 at 8:03 PM, Doug Barton <dougb@freebsd.org> wrote: > I added options KDTRACE_HOOKS to my kernel config, built a new kernel, and > rebooted. I decided to try your script before things went sideways so I'd > have an idea of what to expect, and it didn't work: > > dtrace: failed to initialize dtrace: DTrace device not available on system > > Is there something else I need to do to enable it? You need to build the kernel with CTF. Try adding "makeoptions WITH_CTF=yes" to your config and rebuilding your kernel. There's a blurb in src/UPDATING about other ways to accomplish the same thing. -- Chris ----------------------------------------- http://twitter.com/chrisattack http://chrisattack.com
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