Why is intr taking up so much cpu?

Dan Nelson dnelson at allantgroup.com
Tue Jul 20 03:31:56 UTC 2010

In the last episode (Jul 19), Doug Barton said:
> 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?

I think you also need WITH_CTF=yes , either in your kernel config or
directly on the make commandline.  The kernel config option should work, but
if it doesn't, it's guaranteed to work on the commandline.


	Dan Nelson
	dnelson at allantgroup.com

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