Why is intr taking up so much cpu?

[Chris Ruiz]

On Mon, Jul 19, 2010 at 8:03 PM, Doug Barton <dougb at 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

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