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Date: Wed, 28 Sep 2005 20:06:30 +0530
From: Joseph Koshy <joseph.koshy@gmail.com>
To: Niklas Sorensson <nik@cs.chalmers.se>
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Cc: freebsd-current@freebsd.org
Subject: Re: hwpmc & sampling
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ns> Seems wierd huh? I'd love to get this to work and would'nt
ns> mind investigating the issue if you point me in the right
ns> direction.

Wierd.

The output of 'time' that you posted showed low usr+sys
numbers, but a large elapsed time.  This would happen if
the process is sleeping waiting for data or an external
event.

ns> real    0m24.728s
ns> user    0m0.001s
ns> sys     0m0.004s

If this was a typo and the process was actually using the
CPU for all 24.7 seconds, could you compare the gprof
profiles you get from a pmcstat -S and a pmcstat -P
run?

--
FreeBSD Volunteer,     http://people.freebsd.org/~jkoshy