As the processor gets hotter, internal clocks and so on are throttled
within the hardware to try and stabilise the temperature (to keep the
thermal trip point being reached, re: "emergency shutdown"), which
greatly decreases performance. I'm not sure if there's a way to
detect this, but I would hope (?) that it would be visible via the
CPU clock frequency (on FreeBSD this would be sysctl
dev.cpu.X.freq).
sysctl dev.cpu.X.freq is used to set the frequency. I have not found any
way to read back its internal state so far.
If you boot into another operating system such as Linux or Windows,
do you see the same overall behaviour? Linux might be easier and
might have some built-in way to get at CPU temperatures (via
/proc?).
I will download a Linux ISO and give it a try. The machine currently has
FreeBSD and nothing else installed on it.
Trying to figure out if this is a FreeBSD issue or not is difficult.
Can you please provide:
- Contents of rc.conf
# Console
keymap="german.iso" # Set German keyboard map
# Network
hostname="taiko.lan" # Set hostname to taiko.lan
ifconfig_re0="DHCP" # Configure wired Ethernet via DHCP
# Daemons
powerd_enable="YES" # Run powerd to lower our power usage
sshd_enable="YES" # Run the SSH daemon
moused_enable="YES" # Run the mouse daemon
dbus_enable="YES" # Run the D-Bus daemon
hald_enable="YES" # Run the HAL daemon
webcamd_enable="YES" # Run the webcam daemon
cupsd_enable="YES" # Run the CUPS printer daemon
# Miscellaneous
clear_tmp_enable="YES" # Clear /tmp at startup
devfs_system_ruleset="local" # Apply the "local" ruleset to /dev
# PostgreSQL
postgres_enable="YES" # Run the PostgreSQL server
- sysctl -a hw.acpi
hw.acpi.supported_sleep_state: S3 S4 S5
hw.acpi.power_button_state: S5
hw.acpi.sleep_button_state: S3
hw.acpi.lid_switch_state: NONE
hw.acpi.standby_state: NONE
hw.acpi.suspend_state: S3
hw.acpi.sleep_delay: 1
hw.acpi.s4bios: 0
hw.acpi.verbose: 0
hw.acpi.disable_on_reboot: 0
hw.acpi.handle_reboot: 0
hw.acpi.reset_video: 0
hw.acpi.cpu.cx_lowest: C1
hw.acpi.acline: 1
hw.acpi.battery.life: -1
hw.acpi.battery.time: -1
hw.acpi.battery.state: 7
hw.acpi.battery.units: 1
hw.acpi.battery.info_expire: 5
hw.acpi.thermal.min_runtime: 0
hw.acpi.thermal.polling_rate: 10
hw.acpi.thermal.user_override: 0
hw.acpi.thermal.tz0.temperature: 26.8C
hw.acpi.thermal.tz0.active: -1
hw.acpi.thermal.tz0.passive_cooling: 0
hw.acpi.thermal.tz0.thermal_flags: 0
hw.acpi.thermal.tz0._PSV: -1
hw.acpi.thermal.tz0._HOT: -1
hw.acpi.thermal.tz0._CRT: 100.0C
hw.acpi.thermal.tz0._ACx: 71.0C 55.0C -1 -1 -1 -1 -1 -1 -1 -1
hw.acpi.thermal.tz0._TC1: -1
hw.acpi.thermal.tz0._TC2: -1
hw.acpi.thermal.tz0._TSP: -1
hw.acpi.thermal.tz1.temperature: 0.0C
hw.acpi.thermal.tz1.active: -1
hw.acpi.thermal.tz1.passive_cooling: 1
hw.acpi.thermal.tz1.thermal_flags: 0
hw.acpi.thermal.tz1._PSV: 95.0C
hw.acpi.thermal.tz1._HOT: -1
hw.acpi.thermal.tz1._CRT: 100.0C
hw.acpi.thermal.tz1._ACx: 71.0C 55.0C -1 -1 -1 -1 -1 -1 -1 -1
hw.acpi.thermal.tz1._TC1: 0
hw.acpi.thermal.tz1._TC2: 2
hw.acpi.thermal.tz1._TSP: 10
- sysctl -a dev.cpu
dev.cpu.0.%desc: ACPI CPU
dev.cpu.0.%driver: cpu
dev.cpu.0.%location: handle=\_PR_.CPU0
dev.cpu.0.%pnpinfo: _HID=none _UID=0
dev.cpu.0.%parent: acpi0
dev.cpu.0.temperature: 82.0C
dev.cpu.0.freq: 1333
dev.cpu.0.freq_levels: 1734/45000 1599/41741 1466/38582 1333/35485
1199/32426 1066/29457 933/26552 816/23233 699/19914 583/16595 466/13276
349/9957 233/6638 116/3319
dev.cpu.0.cx_supported: C1/3 C2/245
dev.cpu.0.cx_lowest: C1
dev.cpu.0.cx_usage: 100.00% 0.00% last 285us
dev.cpu.1.%desc: ACPI CPU
dev.cpu.1.%driver: cpu
dev.cpu.1.%location: handle=\_PR_.CPU1
dev.cpu.1.%pnpinfo: _HID=none _UID=0
dev.cpu.1.%parent: acpi0
dev.cpu.1.temperature: 82.0C
dev.cpu.1.cx_supported: C1/3 C2/245
dev.cpu.1.cx_lowest: C1
dev.cpu.1.cx_usage: 100.00% 0.00% last 383us
dev.cpu.2.%desc: ACPI CPU
dev.cpu.2.%driver: cpu
dev.cpu.2.%location: handle=\_PR_.CPU2
dev.cpu.2.%pnpinfo: _HID=none _UID=0
dev.cpu.2.%parent: acpi0
dev.cpu.2.temperature: 82.0C
dev.cpu.2.cx_supported: C1/3 C2/245
dev.cpu.2.cx_lowest: C1
dev.cpu.2.cx_usage: 100.00% 0.00% last 238us
dev.cpu.3.%desc: ACPI CPU
dev.cpu.3.%driver: cpu
dev.cpu.3.%location: handle=\_PR_.CPU3
dev.cpu.3.%pnpinfo: _HID=none _UID=0
dev.cpu.3.%parent: acpi0
dev.cpu.3.temperature: 82.0C
dev.cpu.3.cx_supported: C1/3 C2/245
dev.cpu.3.cx_lowest: C1
dev.cpu.3.cx_usage: 100.00% 0.00% last 187us
dev.cpu.4.%desc: ACPI CPU
dev.cpu.4.%driver: cpu
dev.cpu.4.%location: handle=\_PR_.CPU4
dev.cpu.4.%pnpinfo: _HID=none _UID=0
dev.cpu.4.%parent: acpi0
dev.cpu.4.temperature: 82.0C
dev.cpu.4.cx_supported: C1/3 C2/245
dev.cpu.4.cx_lowest: C1
dev.cpu.4.cx_usage: 100.00% 0.00% last 426us
dev.cpu.5.%desc: ACPI CPU
dev.cpu.5.%driver: cpu
dev.cpu.5.%location: handle=\_PR_.CPU5
dev.cpu.5.%pnpinfo: _HID=none _UID=0
dev.cpu.5.%parent: acpi0
dev.cpu.5.temperature: 82.0C
dev.cpu.5.cx_supported: C1/3 C2/245
dev.cpu.5.cx_lowest: C1
dev.cpu.5.cx_usage: 100.00% 0.00% last 439us
dev.cpu.6.%desc: ACPI CPU
dev.cpu.6.%driver: cpu
dev.cpu.6.%location: handle=\_PR_.CPU6
dev.cpu.6.%pnpinfo: _HID=none _UID=0
dev.cpu.6.%parent: acpi0
dev.cpu.6.temperature: 82.0C
dev.cpu.6.cx_supported: C1/3 C2/245
dev.cpu.6.cx_lowest: C1
dev.cpu.6.cx_usage: 100.00% 0.00% last 138us
dev.cpu.7.%desc: ACPI CPU
dev.cpu.7.%driver: cpu
dev.cpu.7.%location: handle=\_PR_.CPU7
dev.cpu.7.%pnpinfo: _HID=none _UID=0
dev.cpu.7.%parent: acpi0
dev.cpu.7.temperature: 82.0C
dev.cpu.7.cx_supported: C1/3 C2/245
dev.cpu.7.cx_lowest: C1
dev.cpu.7.cx_usage: 100.00% 0.00% last 434us
- sysctl -a dev.est
dev.est.0.%desc: Enhanced SpeedStep Frequency Control
dev.est.0.%driver: est
dev.est.0.%parent: cpu0
dev.est.0.freq_settings: 1734/45000 1733/45000 1599/41741 1466/38582
1333/35485 1199/32426 1066/29457 933/26552
dev.est.1.%desc: Enhanced SpeedStep Frequency Control
dev.est.1.%driver: est
dev.est.1.%parent: cpu1
dev.est.1.freq_settings: 1734/45000 1733/45000 1599/41741 1466/38582
1333/35485 1199/32426 1066/29457 933/26552
dev.est.2.%desc: Enhanced SpeedStep Frequency Control
dev.est.2.%driver: est
dev.est.2.%parent: cpu2
dev.est.2.freq_settings: 1734/45000 1733/45000 1599/41741 1466/38582
1333/35485 1199/32426 1066/29457 933/26552
dev.est.3.%desc: Enhanced SpeedStep Frequency Control
dev.est.3.%driver: est
dev.est.3.%parent: cpu3
dev.est.3.freq_settings: 1734/45000 1733/45000 1599/41741 1466/38582
1333/35485 1199/32426 1066/29457 933/26552
dev.est.4.%desc: Enhanced SpeedStep Frequency Control
dev.est.4.%driver: est
dev.est.4.%parent: cpu4
dev.est.4.freq_settings: 1734/45000 1733/45000 1599/41741 1466/38582
1333/35485 1199/32426 1066/29457 933/26552
dev.est.5.%desc: Enhanced SpeedStep Frequency Control
dev.est.5.%driver: est
dev.est.5.%parent: cpu5
dev.est.5.freq_settings: 1734/45000 1733/45000 1599/41741 1466/38582
1333/35485 1199/32426 1066/29457 933/26552
dev.est.6.%desc: Enhanced SpeedStep Frequency Control
dev.est.6.%driver: est
dev.est.6.%parent: cpu6
dev.est.6.freq_settings: 1734/45000 1733/45000 1599/41741 1466/38582
1333/35485 1199/32426 1066/29457 933/26552
dev.est.7.%desc: Enhanced SpeedStep Frequency Control
dev.est.7.%driver: est
dev.est.7.%parent: cpu7
dev.est.7.freq_settings: 1734/45000 1733/45000 1599/41741 1466/38582
1333/35485 1199/32426 1066/29457 933/26552
- sysctl -a dev.cpufreq
dev.cpufreq.0.%driver: cpufreq
dev.cpufreq.0.%parent: cpu0
dev.cpufreq.1.%driver: cpufreq
dev.cpufreq.1.%parent: cpu1
dev.cpufreq.2.%driver: cpufreq
dev.cpufreq.2.%parent: cpu2
dev.cpufreq.3.%driver: cpufreq
dev.cpufreq.3.%parent: cpu3
dev.cpufreq.4.%driver: cpufreq
dev.cpufreq.4.%parent: cpu4
dev.cpufreq.5.%driver: cpufreq
dev.cpufreq.5.%parent: cpu5
dev.cpufreq.6.%driver: cpufreq
dev.cpufreq.6.%parent: cpu6
dev.cpufreq.7.%driver: cpufreq
dev.cpufreq.7.%parent: cpu7
- sysctl -a kern.timecounter
kern.timecounter.tick: 1
kern.timecounter.choice: TSC(-100) HPET(900) ACPI-safe(850) i8254(0)
dummy(-1000000)
kern.timecounter.hardware: HPET
kern.timecounter.stepwarnings: 0
kern.timecounter.tc.i8254.mask: 65535
kern.timecounter.tc.i8254.counter: 56046
kern.timecounter.tc.i8254.frequency: 1193182
kern.timecounter.tc.i8254.quality: 0
kern.timecounter.tc.ACPI-safe.mask: 16777215
kern.timecounter.tc.ACPI-safe.counter: 11762669
kern.timecounter.tc.ACPI-safe.frequency: 3579545
kern.timecounter.tc.ACPI-safe.quality: 850
kern.timecounter.tc.HPET.mask: 4294967295
kern.timecounter.tc.HPET.counter: 4005351156
kern.timecounter.tc.HPET.frequency: 14318180
kern.timecounter.tc.HPET.quality: 900
kern.timecounter.tc.TSC.mask: 4294967295
kern.timecounter.tc.TSC.counter: 1320432496
kern.timecounter.tc.TSC.frequency: 1729007846
kern.timecounter.tc.TSC.quality: -100
kern.timecounter.smp_tsc: 0
kern.timecounter.invariant_tsc: 1
Finally, just as a data point -- and this should be honoured no
matter what -- there have been cases where manufacturers have
incorrectly been applying thermal grease (if used rather than a TIM
pad)
I watched the Dell technician during the various repairs. From what I
remember, the CPU and GPU share a heat pipe and both have TIM pads.
- Bartosz
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