vyos/vyos-documentation
1
0
Fork 0
mirror of https://github.com/vyos/vyos-documentation.git synced 2025-10-26 08:41:46 +01:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #1631 from vyos/mergify/bp/sagitta/pr-1543

Browse Source 
T6703: Add documentation for AMD pstate driver (backport #1543)
This commit is contained in:
Robert Göhler 2025-05-01 15:10:12 +02:00 committed by GitHub
commit e658bd9e20
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
1 changed files with 22 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
docs/configuration/system/option.rst
View File

@ -43,8 +43,6 @@ Kernel
.. cfgcmd:: set system option kernel disable-power-saving
Disable CPU power saving mechanisms also known as C states.
This will add the following two options to the Kernel commandline:
* ``intel_idle.max_cstate=0`` Disable intel_idle and fall back on acpi_idle
@ -52,6 +50,28 @@ Kernel
.. note:: Setting will only become active with the next reboot!
.. cfgcmd:: set system option kernel amd-pstate-driver <mode>
Enables and configures p-state driver for modern AMD Ryzen and Epyc CPUs.
The available modes are:
* ``active`` This is the low-level firmware control mode based on the profile
set and the system governor has no effect.
* ``passive`` The driver allows the system governor to manage CPU frequency
while providing available performance states.
* ``guided`` The driver allows to set desired performance levels and the firmware
selects a performance level in this range and fitting to the current workload.
This will add the following two options to the Kernel commandline:
* ``initcall_blacklist=acpi_cpufreq_init`` Disable default ACPI CPU frequency scale
* ``amd_pstate={mode}`` Sets the p-state mode
.. note:: Setting will only become active with the next reboot!
.. seealso:: https://docs.kernel.org/admin-guide/pm/amd-pstate.html
***********
HTTP client
***********