Created
April 29, 2025 08:45
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Reduce performance variance of Linux machine.
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| #!/bin/sh | |
| help="Reduce performance variance of the system. | |
| OPTIONS: | |
| -h, --help This help. | |
| * ANY other argument reverts the changes. | |
| " | |
| case "$1" in | |
| -h|--help) echo "$help"; exit 0;; | |
| esac | |
| if [ "$1" ]; then | |
| echo "REVERT CHANGES" | |
| echo "───────────────────────────────────────────" | |
| echo "Setting CPU governor profile 'powersave'..." | |
| echo "───────────────────────────────────────────" | |
| echo powersave | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor | |
| [ $? = 0 ] && echo "☑ DONE" || echo "☒ FAILED" | |
| echo "───────────────────────────────────────────" | |
| echo "Enabling CPU boost"... | |
| echo "───────────────────────────────────────────" | |
| echo "Trying '/sys/devices/system/cpu/cpufreq/boost'..." | |
| if ! echo 1 | sudo tee /sys/devices/system/cpu/cpufreq/boost; then | |
| echo "Trying intel_pstate..." | |
| echo 0 | sudo tee /sys/devices/system/cpu/intel_pstate/no_turbo | |
| fi | |
| [ $? = 0 ] && echo "☑ DONE" || echo "☒ FAILED" | |
| echo "───────────────────────────────────────────" | |
| echo "Enabling ASLR..." | |
| echo "───────────────────────────────────────────" | |
| echo 1 | sudo tee /proc/sys/kernel/randomize_va_space | |
| [ $? = 0 ] && echo "☑ DONE" || echo "☒ FAILED" | |
| else | |
| echo "REDUCE VARIANCE" | |
| echo "───────────────────────────────────────────" | |
| echo "Setting CPU governor profile 'performance'..." | |
| echo "───────────────────────────────────────────" | |
| echo performance | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor | |
| [ $? = 0 ] && echo "☑ DONE" || echo "☒ FAILED" | |
| echo "───────────────────────────────────────────" | |
| echo "Disabling CPU boost"... | |
| echo "───────────────────────────────────────────" | |
| echo "Trying '/sys/devices/system/cpu/cpufreq/boost'..." | |
| if ! echo 0 | sudo tee /sys/devices/system/cpu/cpufreq/boost; then | |
| echo "Trying intel_pstate..." | |
| echo 1 | sudo tee /sys/devices/system/cpu/intel_pstate/no_turbo | |
| fi | |
| [ $? = 0 ] && echo "☑ DONE" || echo "☒ FAILED" | |
| echo "───────────────────────────────────────────" | |
| echo "Disabling ASLR..." | |
| echo "───────────────────────────────────────────" | |
| echo 0 | sudo tee /proc/sys/kernel/randomize_va_space | |
| [ $? = 0 ] && echo "☑ DONE" || echo "☒ FAILED" | |
| fi |
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