bryan/throttled
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Move static fix down

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The static fix takes quite a bit of space, but doesn't  really relate to throttled. Moved it down, so readme is a bit cleaner.
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nariox
2020-02-12 11:27:30 -05:00
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parent d118ddc0a3
commit b1d887c167
1 changed files with 42 additions and 39 deletions
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README.md
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@@ -3,45 +3,7 @@ This tool was originally developed to fix Linux CPU throttling issues affecting
The CPU package power limit (PL1/2) is forced to a value of **44 W** (29 W on battery) and the temperature trip point to **95 'C** (85 'C on battery) by overriding default values in MSR and MCHBAR every 5 seconds (30 on battery) to block the Embedded Controller from resetting these values to default.
On systems where the EC doesn't reset the values (ex: ASUS Zenbook UX430UNR), the power limit can be altered by using the official intel_rapl driver (note: [5.3](https://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux.git/commit/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c?h=for-5.4&id=555c45fe0d04bd817e245a125d242b6a86af4593) or newer is required, if you want to change the MCHBAR values):
```
# MSR
# PL1
echo 44000000 | sudo tee /sys/devices/virtual/powercap/intel-rapl/intel-rapl:0/constraint_0_power_limit_uw # 44 watt
echo 28000000 | sudo tee /sys/devices/virtual/powercap/intel-rapl/intel-rapl:0/constraint_0_time_window_us # 28 sec
# PL2
echo 44000000 | sudo tee /sys/devices/virtual/powercap/intel-rapl/intel-rapl:0/constraint_1_power_limit_uw # 44 watt
echo 2440 | sudo tee /sys/devices/virtual/powercap/intel-rapl/intel-rapl:0/constraint_1_time_window_us # 0.00244 sec
# MCHBAR
# PL1
echo 44000000 | sudo tee /sys/devices/virtual/powercap/intel-rapl-mmio/intel-rapl-mmio:0/constraint_0_power_limit_uw # 44 watt
# ^ Only required change on a ASUS Zenbook UX430UNR
echo 28000000 | sudo tee /sys/devices/virtual/powercap/intel-rapl-mmio/intel-rapl-mmio:0/constraint_0_time_window_us # 28 sec
# PL2
echo 44000000 | sudo tee /sys/devices/virtual/powercap/intel-rapl-mmio/intel-rapl-mmio:0/constraint_1_power_limit_uw # 44 watt
echo 2440 | sudo tee /sys/devices/virtual/powercap/intel-rapl-mmio/intel-rapl-mmio:0/constraint_1_time_window_us # 0.00244 sec
```
If you want to change the values automatic on boot you can use [systemd-tmpfiles](https://www.freedesktop.org/software/systemd/man/tmpfiles.d.html):
```
# /etc/tmpfiles.d/power_limit.conf
# MSR
# PL1
w /sys/devices/virtual/powercap/intel-rapl/intel-rapl:0/constraint_0_power_limit_uw - - - - 44000000
w /sys/devices/virtual/powercap/intel-rapl/intel-rapl:0/constraint_0_time_window_us - - - - 28000000
# PL2
w /sys/devices/virtual/powercap/intel-rapl/intel-rapl:0/constraint_1_power_limit_uw - - - - 44000000
w /sys/devices/virtual/powercap/intel-rapl/intel-rapl:0/constraint_1_time_window_us - - - - 2440
# MCHBAR
# PL1
w /sys/devices/virtual/powercap/intel-rapl-mmio/intel-rapl-mmio:0/constraint_0_power_limit_uw - - - - 44000000
# ^ Only required change on a ASUS Zenbook UX430UNR
w /sys/devices/virtual/powercap/intel-rapl-mmio/intel-rapl-mmio:0/constraint_0_time_window_us - - - - 28000000
# PL2
w /sys/devices/virtual/powercap/intel-rapl-mmio/intel-rapl-mmio:0/constraint_1_power_limit_uw - - - - 44000000
w /sys/devices/virtual/powercap/intel-rapl-mmio/intel-rapl-mmio:0/constraint_1_time_window_us - - - - 2440
```
On systems where the EC doesn't reset the values (ex: ASUS Zenbook UX430UNR), the power limit can be altered by using the official intel_rapl driver (see [Static fix](#static-fix) for more information)
### Tested hardware
Other users have confirmed that the tool is also working for these laptops:
@@ -219,6 +181,47 @@ With the flag `--monitor` the tool *constantly* monitors the throttling status,
[AC] Thermal: OK - Power: OK - Current: OK - Cross-domain (e.g. GPU): OK || VCore: 549 mV - Package: 2.6 W - Graphics: 0.4 W - DRAM: 1.2 W
```
## Static Fix
You can alternatively set the power limits using intel_rapl driver (modifying MCHBAR values requires [Linux 5.3+](https://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux.git/commit/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c?h=for-5.4&id=555c45fe0d04bd817e245a125d242b6a86af4593)). Bear in mind, some embedded controllers (EC) control the power limit values and will reset them from time to time):
```
# MSR
# PL1
echo 44000000 | sudo tee /sys/devices/virtual/powercap/intel-rapl/intel-rapl:0/constraint_0_power_limit_uw # 44 watt
echo 28000000 | sudo tee /sys/devices/virtual/powercap/intel-rapl/intel-rapl:0/constraint_0_time_window_us # 28 sec
# PL2
echo 44000000 | sudo tee /sys/devices/virtual/powercap/intel-rapl/intel-rapl:0/constraint_1_power_limit_uw # 44 watt
echo 2440 | sudo tee /sys/devices/virtual/powercap/intel-rapl/intel-rapl:0/constraint_1_time_window_us # 0.00244 sec
# MCHBAR
# PL1
echo 44000000 | sudo tee /sys/devices/virtual/powercap/intel-rapl-mmio/intel-rapl-mmio:0/constraint_0_power_limit_uw # 44 watt
# ^ Only required change on a ASUS Zenbook UX430UNR
echo 28000000 | sudo tee /sys/devices/virtual/powercap/intel-rapl-mmio/intel-rapl-mmio:0/constraint_0_time_window_us # 28 sec
# PL2
echo 44000000 | sudo tee /sys/devices/virtual/powercap/intel-rapl-mmio/intel-rapl-mmio:0/constraint_1_power_limit_uw # 44 watt
echo 2440 | sudo tee /sys/devices/virtual/powercap/intel-rapl-mmio/intel-rapl-mmio:0/constraint_1_time_window_us # 0.00244 sec
```
If you want to change the values automatic on boot you can use [systemd-tmpfiles](https://www.freedesktop.org/software/systemd/man/tmpfiles.d.html):
```
# /etc/tmpfiles.d/power_limit.conf
# MSR
# PL1
w /sys/devices/virtual/powercap/intel-rapl/intel-rapl:0/constraint_0_power_limit_uw - - - - 44000000
w /sys/devices/virtual/powercap/intel-rapl/intel-rapl:0/constraint_0_time_window_us - - - - 28000000
# PL2
w /sys/devices/virtual/powercap/intel-rapl/intel-rapl:0/constraint_1_power_limit_uw - - - - 44000000
w /sys/devices/virtual/powercap/intel-rapl/intel-rapl:0/constraint_1_time_window_us - - - - 2440
# MCHBAR
# PL1
w /sys/devices/virtual/powercap/intel-rapl-mmio/intel-rapl-mmio:0/constraint_0_power_limit_uw - - - - 44000000
# ^ Only required change on a ASUS Zenbook UX430UNR
w /sys/devices/virtual/powercap/intel-rapl-mmio/intel-rapl-mmio:0/constraint_0_time_window_us - - - - 28000000
# PL2
w /sys/devices/virtual/powercap/intel-rapl-mmio/intel-rapl-mmio:0/constraint_1_power_limit_uw - - - - 44000000
w /sys/devices/virtual/powercap/intel-rapl-mmio/intel-rapl-mmio:0/constraint_1_time_window_us - - - - 2440
```
## Debug
You can enable the `--debug` option to read back written values and check if the tool is working properly. At the statup it will also show the CPUs platform info which contains information about multiplier values and features present for this CPU. Additionally the tool will print the thermal status per core which is handy when it comes to figuring out the reason for CPU throttle. Status fields stands for the current throttle reason or condition and log shows if this was a throttle reason since the last interval.
This is an example output: