bench.sh

gistfile1.txt

#!/bin/bash

LOG_FILE="benchmark_results_$(hostname)_$(date +%Y%m%d_%H%M%S).log"

echo "===== Linux Kernel Compile Benchmark =====" | tee -a "$LOG_FILE"
echo "Running on: $(hostname)" | tee -a "$LOG_FILE"
echo "CPU: $(lscpu | grep 'Model name')" | tee -a "$LOG_FILE"
echo "Cores/Threads: $(nproc)" | tee -a "$LOG_FILE"
echo "-----------------------------------------" | tee -a "$LOG_FILE"

# Install required packages
echo "[1/6] Installing dependencies..." | tee -a "$LOG_FILE"
sudo apt update && sudo apt install -y build-essential flex bison libssl-dev bc git lm-sensors libelf-dev &>> "$LOG_FILE"

# Check if Linux source folder exists
if [ -d "linux" ]; then
    echo "[2/6] Linux folder found. Resetting repository..." | tee -a "$LOG_FILE"
    cd linux || exit
    git reset --hard HEAD &>> "$LOG_FILE"
    git clean -fdx &>> "$LOG_FILE"
    git pull &>> "$LOG_FILE"
else
    echo "[2/6] Cloning Linux kernel source..." | tee -a "$LOG_FILE"
    git clone --depth=1 https://github.com/torvalds/linux.git &>> "$LOG_FILE"
    cd linux || exit
fi

# Ensure a clean build BEFORE configuring
echo "[3/6] Cleaning previous builds..." | tee -a "$LOG_FILE"
make clean | tee -a "$LOG_FILE"

# Configure minimal kernel
echo "[4/6] Configuring kernel..." | tee -a "$LOG_FILE"
make defconfig | tee -a "$LOG_FILE"

# Start CPU monitoring in the background
echo "[5/6] Monitoring CPU usage, temperature, and power..." | tee -a "$LOG_FILE"
(
    echo "Time(s), Temp(C), Power(W)" > ../cpu_log.csv
    while true; do
        TIMESTAMP=$(date +%s)
        TEMP=$(sensors | grep 'Package id 0' | awk '{print $4}' | tr -d '+\UffffffffC')

        # Try reading CPU power for Intel (RAPL) and AMD (if available)
        POWER="N/A"
        
        # Check for Intel RAPL
        if [ -f /sys/class/powercap/intel-rapl:0/energy_uj ]; then
            ENERGY=$(sudo cat /sys/class/powercap/intel-rapl:0/energy_uj 2>/dev/null)
            if [[ $ENERGY =~ ^[0-9]+$ ]]; then
                POWER=$(echo "scale=3; $ENERGY / 1000000" | bc)  # Convert \UffffffffJ to W
            fi
        fi
        
        # Check for AMD energy counters (if Intel RAPL is not available)
        if [ "$POWER" == "N/A" ] && [ -f /sys/class/powercap/amd-rapl:0/energy_uj ]; then
            ENERGY=$(sudo cat /sys/class/powercap/amd-rapl:0/energy_uj 2>/dev/null)
            if [[ $ENERGY =~ ^[0-9]+$ ]]; then
                POWER=$(echo "scale=3; $ENERGY / 1000000000" | bc)  # Convert \UffffffffJ to W
            fi
        fi

        # Write the current time, temperature, and power to the log file
        echo "$TIMESTAMP, $TEMP, $POWER" >> ../cpu_log.csv
        sleep 1
    done
) &
MONITOR_PID=$!

# Run compilation benchmark with a spinner
echo "[6/6] Starting kernel compilation benchmark..." | tee -a "$LOG_FILE"
START_TIME=$(date +%s)

# Background compilation
(make -j$(nproc) &>> "$LOG_FILE") &  
MAKE_PID=$!

# Progress spinner
SPINNER="/|\\-"
while kill -0 $MAKE_PID 2>/dev/null; do
    for i in $(seq 0 3); do
        echo -ne "\rCompiling... ${SPINNER:$i:1}"
        sleep 0.2
    done
done
echo -ne "\rCompilation complete!   \n"

END_TIME=$(date +%s)

# Stop monitoring
kill $MONITOR_PID

# Calculate total compile time
COMPILE_TIME=$((END_TIME - START_TIME))
echo "-----------------------------------------" | tee -a "$LOG_FILE"
echo "Kernel compilation time: $COMPILE_TIME seconds" | tee -a "$LOG_FILE"
echo "CPU monitoring log saved to cpu_log.csv" | tee -a "$LOG_FILE"
echo "Full benchmark log saved to $LOG_FILE" | tee -a "$LOG_FILE"