Hi! > I'd prefer mails over bugzilla for now... > > 4.9-rc2 has bios_limit: > > pavel@duo:~$ cat /sys/devices/system/cpu/cpu0/cpufreq/bios_limit > 1833000 > > and it has thermal zones: > > /sys/devices/virtual/thermal/thermal_zone0/trip_point_0_temp 127000 > /sys/devices/virtual/thermal/thermal_zone0/trip_point_0_type critical > /sys/devices/virtual/thermal/thermal_zone1/trip_point_0_temp 97000 > /sys/devices/virtual/thermal/thermal_zone1/trip_point_0_type critical > /sys/devices/virtual/thermal/thermal_zone1/trip_point_1_temp 92500 > /sys/devices/virtual/thermal/thermal_zone1/trip_point_1_type passive > > ..so it should slow down CPU at 92C. > > So lets push the temperature up a bit... > > sudo watch cat /proc/acpi/ibm/thermal > /sys/devices/system/cpu/cpu0/cpufreq/bios_limit > /sys/devices/virtual/thermal/thermal_zone1/temp /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq > > temperatures: 98 49 -128 85 28 -128 28 -128 49 58 -128 -128 -128 > -128 -128 -128 > 1833000 > 95000 > 1833000 > > Hmm. bios_limit does not seem to change, even when the temperature is > clearly above the trip point. (It is also interestng that acpi/ibm > reports bigger temperatures than > /sys/devices/virtual/thermal/thermal_zone1/temp . I have seen 103C > there.) Under v4.8-rc, behaviour is different: bios_limit goes to 1GHz there when temperature is around 84C at the thermal zone. That keeps ibm/thermal temperatures under 90C, and no "thermal emergency" messages in syslog. So we seem to have thermal or ACPI regression in v4.9-rc3. Best regards, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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