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54ab7d7c59
Currently the default cpufreq driver for all the AMD EPYC servers is acpi-cpufreq. Going forward, switch to amd-pstate as the default driver on the AMD EPYC server platforms with CPU family 0x1A or higher. The default mode will be active mode. Testing shows that amd-pstate with active mode and performance governor provides comparable or better performance per-watt against acpi-cpufreq + performance governor. Likewise, amd-pstate with active mode and powersave governor with the energy_performance_preference=power (EPP=255) provides comparable or better performance per-watt against acpi-cpufreq + schedutil governor for a wide range of workloads. Users can still revert to using acpi-cpufreq driver on these platforms with the "amd_pstate=disable" kernel commandline parameter. Signed-off-by: Swapnil Sapkal <swapnil.sapkal@amd.com> Signed-off-by: Gautham R. Shenoy <gautham.shenoy@amd.com> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Link: https://lore.kernel.org/r/20241021101836.9047-3-gautham.shenoy@amd.com Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> |
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.