From 65252c18af3c2f4f5e8e525cdd32bd48dfb7aaa5 Mon Sep 17 00:00:00 2001
From: Michael Vasseur <michael.vasseur@vu.nl>
Date: Fri, 25 Oct 2024 10:20:21 +0200
Subject: [PATCH] Pin the frequency on clockspeed

---
 provision-contest/disable-turboboost_ht | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/provision-contest/disable-turboboost_ht b/provision-contest/disable-turboboost_ht
index ad00dc28..ce41e815 100755
--- a/provision-contest/disable-turboboost_ht
+++ b/provision-contest/disable-turboboost_ht
@@ -14,6 +14,11 @@ for cpu in $(ls -1d /sys/devices/system/cpu/cpu* | sort --version-sort) ; do
     if [ -f $cpu/cpufreq/scaling_governor ]; then
         chmod u+w $cpu/cpufreq/scaling_governor
     fi
+    for boundary in min max; do
+        if [ -f $cpu/cpufreq/scaling_${boundary}_freq ]; then
+            chmod u+w $cpu/cpufreq/scaling_${boundary}_freq
+        fi
+    done
 
     # Set governor to performance and do not allow changes later on.
     if [ -f $cpu/cpufreq/scaling_governor ]; then
@@ -21,6 +26,12 @@ for cpu in $(ls -1d /sys/devices/system/cpu/cpu* | sort --version-sort) ; do
         chmod a-w $cpu/cpufreq/scaling_governor
     fi
 
+    # Hardware maximum performance.
+    if [ -f $cpu/cpufreq/scaling_min_freq ] && [ -f $cpu/cpufreq/scaling_max_freq ]; then
+        cp $cpu/cpufreq/scaling_{max,min}_freq
+        chmod a-w $cpu/cpufreq/scaling_{max,min}_freq
+    fi
+
     # Disable all but one thread on each core. Both core_id and physical_package_id are
     # numbers it must be ensured that for the following examples are seen as distinct:
     #  - core_id=1,  physical_package=11