Merge pull request 'Control CPU frequency and idle settings' (#4) from performance_cpupower-settings into main

Reviewed-on: #4

cpupower/cpupower

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+CPU_GOVERNOR="performance"
+CPU_CSTATES_DISABLE_BY_LATENCY="3"

cpupower/cpupower.examples

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+ansible -b all -m copy -a "src=cpupower.sh dest=/usr/local/sbin/cpupower.sh"
+ansible -b all -m copy -a "src=cpupower.service dest=/etc/systemd/system/cpupower.service"
+ansible -b all -m copy -a "src=cpupower.sh dest=/usr/local/sbin/cpupower.sh mode=0755"
+
+ansible -b all -m shell -a "systemctl enable --now cpupower.service"
+
+ansible -b all -m shell -a "cpupower frequency-info | grep governor; cpupower idle-info | grep ^C"
+
+l3support@uxicasfs01:~/cpupower> ansible -b all -m shell -a "cpupower frequency-info | grep governor; cpupower idle-info | grep ^C"
+uxicasfs02 | CHANGED | rc=0 >>
+  available cpufreq governors: performance powersave
+                  The governor "performance" may decide which speed to use
+CPUidle driver: intel_idle
+CPUidle governor: menu
+C1:
+C1E (DISABLED) :
+C6 (DISABLED) :
+uxicasfs01 | CHANGED | rc=0 >>
+  available cpufreq governors: performance powersave
+                  The governor "performance" may decide which speed to use
+CPUidle driver: intel_idle
+CPUidle governor: menu
+C1:
+C1E (DISABLED) :
+C6 (DISABLED) :

cpupower/cpupower.service

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+[Unit]
+Description=Configure cpupower related settings
+
+[Service]
+EnvironmentFile=-/etc/default/cpupower
+Type=oneshot
+ExecStart=/usr/local/sbin/cpupower.sh
+RemainAfterExit=yes
+
+[Install]
+WantedBy=multi-user.target

cpupower/cpupower.sh

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+#!/bin/bash
+
+CPUPOWER_CONFIG="/etc/default/cpupower"
+
+if [ -f "${CPUPOWER_CONFIG}" ]; then
+  source "${CPUPOWER_CONFIG}"
+else
+  exit 0
+fi
+
+print_header() {
+cat << HEADER
+
+###############################################################################
+# ${@}
+###############################################################################
+HEADER
+}
+
+# Set the CPU governor
+if [ ! "${CPU_GOVERNOR}" == "" ]; then
+  print_header "Setting CPU governor to ${CPU_GOVERNOR}"
+  cpupower frequency-set --governor "${CPU_GOVERNOR}" &> /dev/null
+  cpupower frequency-info
+else
+  echo "CPU governor is not set."
+fi
+
+# Set the Cstate by latency
+if [ ! "${CPU_CSTATES_DISABLE_BY_LATENCY}" == "" ]; then
+  print_header "Setting CPU CStates by latency to ${CPU_CSTATES_DISABLE_BY_LATENCY}"
+  cpupower idle-set --disable-by-latency "${CPU_CSTATES_DISABLE_BY_LATENCY}" &> /dev/null
+  cpupower idle-info
+else
+  echo "No CPU Cstates by latency configured."
+fi