docker-perf.sh

docker-perf.sh

#!/bin/bash

# Capture the stats for all containers
docker stats --no-stream --format "{{.Container}} {{.Name}} {{.CPUPerc}} {{.MemUsage}}" > stats.txt

# Temporary file to store container info for sorting
temp_file=$(mktemp)

# Helper function to format running time
format_time() {
    seconds=$1
    days=$((seconds / 86400))
    hours=$(( (seconds % 86400) / 3600 ))
    minutes=$(( (seconds % 3600) / 60 ))

    result=""
    if [ $days -gt 0 ]; then
        result="$days days"
    fi
    if [ $hours -gt 0 ]; then
        if [ -n "$result" ]; then
            result="$result, $hours hours"
        else
            result="$hours hours"
        fi
    fi
    result="$result, $minutes minutes"
    echo $result | sed 's/^, //g'  # Remove leading comma if present
}

# Loop through containers and gather additional information
while read -r line; do
    container_id=$(echo $line | awk '{print $1}')
    container_name=$(echo $line | awk '{print $2}')
    cpu_usage=$(echo $line | awk '{print $3}')
    memory_usage=$(echo $line | awk '{print $4 " " $5}')
    
    # Get container start time (uptime)
    start_time=$(docker inspect --format='{{.State.StartedAt}}' $container_id)
    
    # Calculate time running in seconds
    running_seconds=$(( $(date +%s) - $(date -d "$start_time" +%s) ))
    
    # Format the time running into a friendly format
    time_running=$(format_time $running_seconds)
    
    # Get all the container's IP addresses, separated by semicolons
    ip_address=$(docker inspect --format='{{range .NetworkSettings.Networks}}{{.IPAddress}};{{end}}' $container_id | sed 's/;$//')  # Remove the trailing semicolon
    
    # Store the data in a temporary file for sorting
    echo "$container_id $container_name $cpu_usage $memory_usage $time_running $ip_address" >> "$temp_file"
done < stats.txt

# Sort the containers by the time they've been running (descending)
sorted_file=$(mktemp)
sort -k5r "$temp_file" > "$sorted_file"

# Print the header with aligned columns
printf "%-20s %-70s %-10s %-20s %-25s %-20s\n" "Container ID" "Name" "CPU %" "Memory Usage" "Time Running" "IP Address"

# Print the sorted results
while read -r sorted_line; do
    container_id=$(echo $sorted_line | awk '{print $1}')
    container_name=$(echo $sorted_line | awk '{print $2}')
    cpu_usage=$(echo $sorted_line | awk '{print $3}')
    memory_usage=$(echo $sorted_line | awk '{print $4 " " $5}')
    time_running=$(echo $sorted_line | awk '{print $6 " " $7 " " $8}')
    ip_address=$(echo $sorted_line | awk '{print $9}')
    
    printf "%-20s %-70s %-10s %-20s %-25s %-20s\n" "$container_id" "$container_name" "$cpu_usage" "$memory_usage" "$time_running" "$ip_address"
done < "$sorted_file"

# Calculate total CPU and memory usage
total_cpu=$(awk '{gsub("%","",$3); sum+=$3} END {print sum}' stats.txt)
total_mem=$(awk '{split($4, mem, "/"); if(mem[2] ~ /GiB/) sum+=mem[1]*1024; else sum+=mem[1]} END {print sum " MiB"}' stats.txt)

# Print the totals with aligned columns
printf "\n%-50s %-10s\n" "Total CPU Usage:" "$total_cpu %"
printf "%-50s %-10s\n" "Total Memory Usage:" "$total_mem"

# Clean up temporary files
rm "$temp_file" "$sorted_file"