Date: Sun, 06 Mar 2011 10:02:59 +0100 From: Martin Birgmeier <martin.birgmeier@aon.at> To: freebsd-hackers@freebsd.org Subject: All CPUs always running at profhz Message-ID: <4D734DC3.3050709@aon.at>
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I have systems running 7.4 and 8.2. The newer ones (in terms of age of hardware) are always running at profhz, i.e., when executing a "systat -vm 1" I see that all cores always get profhz interrupts per second. An older machine running 7.4 is running at hz (which for this machine I set to kern.hz=200 in loader.conf). Using ps -o ...,flags,... I see that no process has profiling turned on. Why is this so? Especially on laptops, I'd like to save power by lowering the interrupt rate. Regards, Martin -- Martin Birgmeier Vienna Austria
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