Date: Tue, 20 Mar 2012 21:41:04 +0100 From: Matthias Gamsjager <mgamsjager@gmail.com> To: freebsd-stable@freebsd.org Subject: powerd and increase in energy need Message-ID: <CA%2BD9Qhv5EmrkqvLetx9T5WD_1BRuCpUyZ=VYnRSjwRYqA7phdg@mail.gmail.com>
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Hi, my zfs nas has an Asus p5e motherboard (x38 chip) and an intel q9300 (quad core 2,5Ghz) processor with all the energy save setting enabled in the bios. Today I connected the power cord to a voltcraft energy meter to see how much energy the whole system needs in idle mode. I found out that with powerd running the cpu get clocked down to 499 mhz with is nice. The funny thing is that this doesn't decrease the amount of watts the machine need. 2,5ghz or 499mhz doen't matter at all. It gets even funnier. With powerd running the systems actually needs 4 watts more then without powerd running. Isn't the whole point of powerd to to decease the energy needs of a machine? or is it utterly broken with this cpu generation?
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