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--- ubuntu:gpu:amd_gpu:performance_tuning [2023/06/03 08:17] – created peter
+++ ubuntu:gpu:amd_gpu:performance_tuning [2023/06/05 15:42] (current) – peter
@@ Line 8: / Line 8: @@
 ----
+===== Check the Existing Performance Level =====
+<code bash>
+cat /sys/class/drm/card0/device/power_dpm_force_performance_level
+</code>
+returns:
+<code bash>
+auto
+</code>
+----
 ===== Set High Performance =====
@@ Line 39: / Line 54: @@
 ----
-===== Check the Existing Performance Level =====
+===== Set Manual Performance =====
+To set manual performance:
 <code bash>
-cat /sys/class/drm/card0/device/power_dpm_force_performance_level
+echo "manual" > /sys/class/drm/card0/device/power_dpm_force_performance_level
 </code>
-returns:
+<WRAP info>
+**NOTE:**  When **manual** is selected, the user can manually adjust which power states are enabled for each clock domain via the sysfs pp_dpm_mclk, pp_dpm_sclk, and pp_dpm_pcie files and adjust the power state transition heuristics via the pp_power_profile_mode sysfs file.
+</WRAP>
+----
+===== Profiling Mode Performance Settings =====
 <code bash>
-auto
+echo "profile_standard" > /sys/class/drm/card0/device/power_dpm_force_performance_level
+echo "profile_min_sclk" > /sys/class/drm/card0/device/power_dpm_force_performance_level
+echo "profile_min_mclk" > /sys/class/drm/card0/device/power_dpm_force_performance_level
+echo "profile_peak" > /sys/class/drm/card0/device/power_dpm_force_performance_level
 </code>
+<WRAP info>
+**NOTE:**  When the profiling modes are selected, clock and power gating are disabled and the clocks are set for different profiling cases.
+This mode is recommended for profiling specific work loads where you do not want clock or power gating for clock fluctuation to interfere with your results.
+  * **profile_standard** sets the clocks to a fixed clock level which varies from asic to asic.
+  * **profile_min_sclk** forces the sclk to the lowest level.
+  * **profile_min_mclk** forces the mclk to the lowest level.
+  * **profile_peak** sets all clocks (mclk, sclk, pcie) to the highest levels.
+</WRAP>
 ----
+===== Set the DPM Performance Level Permanently =====
+Created a **/etc/rc.local** file and populate with:
+<file bash>
+#!/bin/bash
+echo low > /sys/class/drm/card0/device/power_dpm_force_performance_level
+</file>
+==== Make it executable ====
+<code bash>
+chmod a+x /etc/rc.local
+</code>
+----
+==== Enable systemd service to run this script ====
+See How to enable rc.local with systemd.
+----
+===== References =====
+https://dri.freedesktop.org/docs/drm/gpu/amdgpu.html#power-dpm-state