Date: Mon, 21 Nov 2022 09:10:04 -0500 From: mike tancsa <mike@sentex.net> To: Ian Smith <smithi@nimnet.asn.au> Cc: questions@freebsd.org Subject: Re: RELENG_13 and min cpu frequency Message-ID: <0fcbc8d6-388f-9393-0b60-1c196015eb16@sentex.net> In-Reply-To: <BF5CF7F7-DBB3-45A5-9FFA-7595EF41D494@nimnet.asn.au> References: <9d17ea30-4b10-2aa3-9d09-017da7423844@sentex.net> <BF5CF7F7-DBB3-45A5-9FFA-7595EF41D494@nimnet.asn.au>
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On 11/19/2022 12:41 AM, Ian Smith wrote: > > > > Setting debug.cpufreq.lowest: to 3000 does not seem to make a > > difference > > I see below that it's 0 .. didn't it take, or was that another time? > > > dev.cpu.0.freq_levels: 3400/-1 > > dev.cpu.0.freq: 1302 Hi the 0 value appears to be the default when it boots up. > > So, hmm. powerd reads and sets values in dev.cpu.0.freq_levels, hence can't change it to anything but 3400. > > So how is cpu.0.freq changing at all? Is cpufreq using est(4)? Are there more freqs in dev.est.0.freq_settings? I dont have that in the tree. cpufreq is in the kernel, but # sysctl -A | grep freq_settings # does not show it as a value > > Or is it using a _relative_ driver like acpi_throttle or p4tcc? Default /boot/device.hints has both of these disabled for good reason (Kevin Oberman can elaborate) Not sure, but I dont have any mods to device.hints hint.acpi_throttle.0.disabled="1" hint.p4tcc.0.disabled="1" ---Mike
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