I am trying out PCengines latest apu2 boards, and I just noticed that with different Freebsd versions I get different freq_levels, and so when idling, each box (have 5) has a different freq/temperature value, ranging from 125/69.1C, 600/59.0C to 75/56.0C FreeBSD apu-4 11.1-STABLE FreeBSD 11.1-STABLE #5 f565b5a06ab3 (11) tip: Mon Jul 31 09:36:33 IDT 2017 apu-4# sysctl dev.cpu.0.freq_levels dev.cpu.0.freq_levels: 1000/980 800/807 600/609 FreeBSD apu-5 11.1-PRERELEASE FreeBSD 11.1-PRERELEASE #0 21e9d1ca9b80 (11) tip: Tue May 30 11:51:48 IDT 2017 apu-5# sysctl dev.cpu.0.freq_levels dev.cpu.0.freq_levels: 1000/966 875/845 800/795 700/695 600/600 525/525 450/450 375/375 300/300 225/225 150/150 75/75 FreeBSD apu-1 10.3-STABLE FreeBSD 10.3-STABLE #4 267788fd852c (10) tip: Tue Jan 10 09:09:00 IST 2017 apu-1# sysctl dev.cpu.0.freq_levels dev.cpu.0.freq_levels: 1000/-1 875/-1 750/-1 625/-1 500/-1 375/-1 250/-1 125/-1 so, any ideas as to what is going on? thanks, danny
On Mon, 31 Jul 2017 10:09:11 +0300, Daniel Braniss wrote: > I am trying out PCengines latest apu2 boards, and I just noticed that with different Freebsd versions I get > different freq_levels, and so when idling, each box (have 5) has a different freq/temperature value, ranging > from 125/69.1C, 600/59.0C to 75/56.0C > > FreeBSD apu-4 11.1-STABLE FreeBSD 11.1-STABLE #5 f565b5a06ab3 (11) tip: Mon Jul 31 09:36:33 IDT 2017 > apu-4# sysctl dev.cpu.0.freq_levels > dev.cpu.0.freq_levels: 1000/980 800/807 600/609 That looks about right. On a Core2Duo (still on 9.3) I get: dev.est.1.freq_settings: 2401/35000 2400/35000 1600/15000 800/12000 dev.est.0.freq_settings: 2401/35000 2400/35000 1600/15000 800/12000 dev.cpu.0.freq_levels: 2401/35000 2400/35000 1600/15000 800/12000 dev.cpu.0.freq: 800 But only because I'd added to /boot/loader.conf: hint.p4tcc.0.disabled=1 hint.acpi_throttle.0.disabled=1 which became the defaults sometime, maybe not before 11.0? Otherwise mine would look more similar to the one below, with all 12.5% increments in frequency enabled, which doesn't actually save any power at all. > FreeBSD apu-5 11.1-PRERELEASE FreeBSD 11.1-PRERELEASE #0 21e9d1ca9b80 (11) tip: Tue May 30 11:51:48 IDT 2017 > apu-5# sysctl dev.cpu.0.freq_levels > dev.cpu.0.freq_levels: 1000/966 875/845 800/795 700/695 600/600 525/525 450/450 375/375 300/300 225/225 150/150 75/75 Looks like either p4tcc or acpi_throttle is enabled? See cpufreq(4). As above, these don't buy you anything but extra busyness for powerd. Also noticed that the (nice, low!) milliwatt figures for 1000/800/600 freqs are a bit different to the -stable one. Slightly Different model? > FreeBSD apu-1 10.3-STABLE FreeBSD 10.3-STABLE #4 267788fd852c (10) tip: Tue Jan 10 09:09:00 IST 2017 > apu-1# sysctl dev.cpu.0.freq_levels > dev.cpu.0.freq_levels: 1000/-1 875/-1 750/-1 625/-1 500/-1 375/-1 250/-1 125/-1 And that looks like est(4) isn't enabled/attaching at all .. see dmesg on all of these for clues. > so, any ideas as to what is going on? Pure guesswork on experience with older versions, I'm not up to date. cheers, Ian
all boards are identical, purchased at the same time.> On 31 Jul 2017, at 13:48, Ian Smith <smithi at nimnet.asn.au> wrote: > > On Mon, 31 Jul 2017 10:09:11 +0300, Daniel Braniss wrote: > >> I am trying out PCengines latest apu2 boards, and I just noticed that with different Freebsd versions I get >> different freq_levels, and so when idling, each box (have 5) has a different freq/temperature value, ranging >> from 125/69.1C, 600/59.0C to 75/56.0C >> >> FreeBSD apu-4 11.1-STABLE FreeBSD 11.1-STABLE #5 f565b5a06ab3 (11) tip: Mon Jul 31 09:36:33 IDT 2017 >> apu-4# sysctl dev.cpu.0.freq_levels >> dev.cpu.0.freq_levels: 1000/980 800/807 600/609 > > That looks about right. On a Core2Duo (still on 9.3) I get: > dev.est.1.freq_settings: 2401/35000 2400/35000 1600/15000 800/12000 > dev.est.0.freq_settings: 2401/35000 2400/35000 1600/15000 800/12000 > dev.cpu.0.freq_levels: 2401/35000 2400/35000 1600/15000 800/12000 > dev.cpu.0.freq: 800 > > But only because I'd added to /boot/loader.conf: > > hint.p4tcc.0.disabled=1 > hint.acpi_throttle.0.disabled=1 >the above are in my device.hints, so I assume they now standard.> which became the defaults sometime, maybe not before 11.0? Otherwise > mine would look more similar to the one below, with all 12.5% increments > in frequency enabled, which doesn't actually save any power at all. > >> FreeBSD apu-5 11.1-PRERELEASE FreeBSD 11.1-PRERELEASE #0 21e9d1ca9b80 (11) tip: Tue May 30 11:51:48 IDT 2017 >> apu-5# sysctl dev.cpu.0.freq_levels >> dev.cpu.0.freq_levels: 1000/966 875/845 800/795 700/695 600/600 525/525 450/450 375/375 300/300 225/225 150/150 75/75 > > Looks like either p4tcc or acpi_throttle is enabled? See cpufreq(4). > As above, these don't buy you anything but extra busyness for powerd. > > Also noticed that the (nice, low!) milliwatt figures for 1000/800/600 > freqs are a bit different to the -stable one. Slightly Different model? > >> FreeBSD apu-1 10.3-STABLE FreeBSD 10.3-STABLE #4 267788fd852c (10) tip: Tue Jan 10 09:09:00 IST 2017 >> apu-1# sysctl dev.cpu.0.freq_levels >> dev.cpu.0.freq_levels: 1000/-1 875/-1 750/-1 625/-1 500/-1 375/-1 250/-1 125/-1 > > And that looks like est(4) isn't enabled/attaching at all .. see dmesg > on all of these for clues. > >> so, any ideas as to what is going on? > > Pure guesswork on experience with older versions, I'm not up to date. > > cheers, Ianwell, since I?m mostly interested in 11.1 at the moment, what you are saying is that?s ok, fine by me, thanks, danny