Date: Tue, 17 Jan 2006 12:00:24 -0800 From: Nate Lawson <nate@root.org> To: Ulrich Spoerlein <q@galgenberg.net> Cc: acpi@freebsd.org Subject: Re: powerd: How to really disable acpi_throttle? Message-ID: <43CD4CD8.9080402@root.org> In-Reply-To: <20060117185633.GE1381@galgenberg.net> References: <20060117185633.GE1381@galgenberg.net>
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Ulrich Spoerlein wrote: > Hi guys, > > I put > > hint.acpi_perf.0.disabled="1" > hint.acpi_throttle.0.disabled="1" > > into /boot/loader.conf and /boot/device.hints, but the acpi_throttle > module still seems to attach > > % dmesg|grep cpu > cpu0: <ACPI CPU> on acpi0 > est0: <Enhanced SpeedStep Frequency Control> on cpu0 > p4tcc0: <CPU Frequency Thermal Control> on cpu0 acpi_throttle and p4tcc are different drivers. So: hint.p4tcc.0.disabled="1" > Btw, who decides how those frequencies are chosen? Is the 600MHz setting > made by 600MHz-EST * 100% throttle or is it 1200MHz-EST and 50% > throttle? There is a optimization phase in cpufreq that prefers frequencies generated by absolute drivers more than relative. So 600 * 100% would be chosen, not 1200 * 50%. -- Nate
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