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Date: Tue, 08 Jan 2008 22:37:25 +0100
From: Kris Kennaway <kris@FreeBSD.org>
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To: Toomas Aas <toomas.aas@raad.tartu.ee>
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Cc: freebsd-stable@freebsd.org, Wayne Sierke <ws@au.dyndns.ws>
Subject: Re: 6.3-PRERELEASE desktop system periodically freezes momentarily
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Toomas Aas wrote:
> Kris Kennaway wrote:
> 
>> OK, you may need to set up hwpmc or LOCK_PROFILING to figure out what 
>> your system is doing at that moment.
> 
> I set up a kernel with hwpmc support, but am feeling a bit (to put it 
> mildly) lost, since I haven't really done anything with hwpmc ever 
> before. I was hoping to maybe figure out whether this freezing is caused 
> by some device interrupt, so I tried:
> 
> # pmcstat -S interrupts -o /tmp/sample.txt
> 
> But all I get is this:
> pmcstat: ERROR: Cannot allocate system-mode pmc with specification 
> "interrupts": Invalid argument
> 
> Yet "interrupts" is listed in pmc(3).
> 
> I'm sure I'm making some ridiculous error.
> 
> Having now revealed my ignorance, I go to sleep(1).

Probably you want 'instructions'.

Kris