Date: Sun, 10 Oct 2010 18:40:45 +0100 From: Bruce Cran <bruce@cran.org.uk> To: freebsd-questions@freebsd.org Subject: VIA EPIA 5000 and ACPI Cx levels Message-ID: <201010101840.45287.bruce@cran.org.uk>
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I recently upgraded to HEAD on my VIA EPIA C3 box, and had thought about trying out the new one-shot timer mode. Reading mav@'s email it seems that since it doesn't have LAPIC or HPET timers it won't work. However I thought I should still get power savings by using higher Cx levels, but setting hw.acpi.cpu.cx_lowest to C3 I'm only seeing 0.8% time spent in C2 mode, the rest being in C1. The CPU's idle so I don't understand why it's not going into deeper sleep modes. Is this likely to just be an ACPI bug? -- Bruce Cran
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