| 12 Mar 2023 |
 Minijackson | that I can understand xD | 17:01:29 |
 Rampoina | it's like it has some problem with the CPU
[rampoina@nixos:~]$ sudo cpupower frequency-set -f 3.9GHz
Setting cpu: 0
Error setting new values. Common errors:
- Do you have proper administration rights? (super-user?)
- Is the governor you requested available and modprobed?
- Trying to set an invalid policy?
- Trying to set a specific frequency, but userspace governor is not available,
for example because of hardware which cannot be set to a specific frequency
or because the userspace governor isn't loaded?
| 17:03:16 |
| Minijackson | setting the performance governor doesn't change the frequency? | 17:03:58 |
| Rampoina | well, now it's changed because I set the minimum one but no | 17:07:39 |
| Rampoina | In reply to @rampoina:matrix.org
[rampoina@nixos:~]$ cpupower frequency-info
analyzing CPU 0:
driver: intel_pstate
CPUs which run at the same hardware frequency: 0
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: Cannot determine or is not supported.
hardware limits: 800 MHz - 3.90 GHz
available cpufreq governors: performance powersave
current policy: frequency should be within 800 MHz and 3.90 GHz.
The governor "powersave" may decide which speed to use
within this range.
current CPU frequency: Unable to call hardware
current CPU frequency: 800 MHz (asserted by call to kernel)
boost state support:
Supported: yes
Active: yes
[rampoina@nixos:~]$ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
powersave
powersave
powersave
powersave
you can see here it was set to performance | 17:07:50 |
| Rampoina | but the freq was 800 | 17:08:01 |
| Rampoina | oh no nvm | 17:08:08 |
| Rampoina | it wasn't performance | 17:08:11 |
| Rampoina | duh | 17:08:12 |
| Rampoina | shouldn't musnix activate that? | 17:08:22 |
| Rampoina | I have
musnix.enable = true;
musnix.kernel.realtime = true;
so why wasn't it set to performance :|
| 17:09:52 |
| Rampoina | yeah I just rebooted, it's set to powersave | 17:19:36 |
| Rampoina | sudo cpupower frequency-set -g performance works | 17:19:43 |
| Rampoina | and it changes the frequency | 17:19:48 |
| Minijackson | It might be set in your hardware-configuration.nix | 17:20:20 |
| * Rampoina checks | 17:21:18 |
| Minijackson | but it's still weird, the powersave governor shouldn't just set the frequency to the minimum 😕 | 17:21:52 |
| Rampoina | it definitely is set there | 17:22:05 |
| Minijackson | https://github.com/musnix/musnix/blob/0bac3f9b14ac767d81c8b19134fb23e3959b8cef/modules/base.nix#L85 huh | 17:22:58 |
| Rampoina | removing the line from hardware-configuration.nix didn't fix it | 17:45:26 |
| Rampoina | this is getting really annoying | 18:14:41 |
| Rampoina | setting it on configuration.nix doesn't do anything either | 18:14:53 |
| Rampoina | but | 18:14:57 |
| Rampoina | restarting the service applies the performance governor :| | 18:15:09 |
| Rampoina | systemctl restart cpufreq.service | 18:15:21 |
| Minijackson | what happens if you reboot, and run journalctl -xeu cpufreq ? | 18:16:27 |
| Rampoina | let's see | 18:18:05 |
| Rampoina | [rampoina@nixos:~]$ LANG=EN_US journalctl -xeu cpufreq
~
~
~
~
~
~
~
~
~
~
Mar 12 19:19:27 nixos systemd[1]: Starting CPU Frequency Setup...
â–‘â–‘ Subject: A start job for unit cpufreq.service has begun execution
â–‘â–‘ Defined-By: systemd
â–‘â–‘ Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
â–‘â–‘
â–‘â–‘ A start job for unit cpufreq.service has begun execution.
â–‘â–‘
â–‘â–‘ The job identifier is 98.
Mar 12 19:19:29 nixos cpupower[814]: Setting cpu: 0
Mar 12 19:19:29 nixos cpupower[814]: Setting cpu: 1
Mar 12 19:19:29 nixos cpupower[814]: Setting cpu: 2
Mar 12 19:19:29 nixos cpupower[814]: Setting cpu: 3
Mar 12 19:19:29 nixos systemd[1]: Finished CPU Frequency Setup.
â–‘â–‘ Subject: A start job for unit cpufreq.service has finished successfully
â–‘â–‘ Defined-By: systemd
â–‘â–‘ Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
â–‘â–‘
â–‘â–‘ A start job for unit cpufreq.service has finished successfully.
â–‘â–‘
â–‘â–‘ The job identifier is 98
| 18:22:04 |
| Rampoina | [rampoina@nixos:~]$ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
powersave
powersave
powersave
powersave
| 18:22:17 |
| Minijackson | huh, it seems something or other overrides the governor in the boot process? | 18:22:49 |
