Date: Sat, 06 Jun 2009 03:14:42 +0930 From: Wayne Sierke <ws@au.dyndns.ws> To: freebsd-acpi@freebsd.org Subject: powerd on multi-core cpus Message-ID: <1244223882.24951.3369.camel@predator-ii.buffyverse>
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Hi, I recently tried powerd for the first time and I'm wondering whether a couple of aspects of its behaviour are considered usual. First is that the load value displayed by powerd ranges to a maximum of #cpus x 100%, e.g. 200% on a dual-core opteron and 400% on a dual-core atom with Hyper-threading. Second is that in the default adaptive mode, the 'wanted freq' ranges to a maximum of #cores x max-freq, e.g. 3618MHz on a dual-core opteron with a max-freq of 1809MHz, and 3236MHz on a dual-core atom with a max-freq of 1618MHz. These were seen with 7.2-STABLE i386. I found it somewhat counter-intuitive since powerd rejects configuration settings for load thresholds of more than 100%, e.g.: # powerd -v -r 125 powerd: 125 is not a valid percent Is this how powerd is expected to behave or is there something amiss with my setups? Thanks, Wayne
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