ci: add scripts for quiescing bare metal server

scripts/server_quiesce.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+set -x
+set -e
+
+# This script is not general purpose, modify for your needs
+# All the changes are temporary and go away on boot
+# ref: https://llvm.org/docs/Benchmarking.html
+
+# Set performance governor
+for i in 0 1 2 3 4 5 6 7
+do
+  echo "performance" | sudo tee /sys/devices/system/cpu/cpu$i/cpufreq/scaling_governor
+done
+
+
+# Remove effects of SMT
+echo "off" | sudo tee /sys/devices/system/cpu/smt/control
+
+# Disable turbo boosting
+for cpu_no in 0 1 2 3 4 5 6 7
+do
+  echo 3000000 | sudo tee /sys/devices/system/cpu/cpufreq/policy$cpu_no/scaling_max_freq
+done
+
+# Disable ASLR
+echo 0 | sudo tee /proc/sys/kernel/randomize_va_space

scripts/server_unquiesce.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+set -x
+set -e
+
+# Switch back performance governor
+for i in 0 1 2 3 4 5 6 7
+do
+  echo "powersave" | sudo tee /sys/devices/system/cpu/cpu$i/cpufreq/scaling_governor
+done
+
+
+# Enable SMT
+echo "on" | sudo tee /sys/devices/system/cpu/smt/control
+
+
+# Enable max turbo frequencies
+for cpu_no in 0 1 2 3 4 5 6 7
+do
+  echo 5389000 | sudo tee /sys/devices/system/cpu/cpufreq/policy$cpu_no/scaling_max_freq
+done
+
+# Enable ASLR
+echo 2 | sudo tee /proc/sys/kernel/randomize_va_space