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To: freebsd-hackers@freebsd.org
From: "Russell L. Carter" <rcarter@pinyon.org>
Subject: hardware performance monitoring counters
Message-ID: <d70b8f0d-7936-2e7a-c8c7-9d2cfeb940c7@pinyon.org>
Date: Wed, 10 May 2017 08:45:53 -0700
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Greetings,
I'd like to use the PMC capabilities, but I seem to have
a misconfiguration:

root@bruno> pmccontrol -l
pmccontrol: Initialization of the pmc(3) library failed: No such file or 
directory

In my kernel conf directory:

root@bruno> grep -i pmc *
[...]
RLCBASE:options         HWPMC_HOOKS             # Necessary kernel hooks 
for hwpmc(4)
[...]

Both amd and intel systems have the same error on fresh 11/stable
amd64 systems.  Mr. google turns up people having the same
problem, but no solutions.

Does anyone know how I might fix this?

Thanks,
Russell