ylluminate · August 27, 2024 02:54
diff --git a/resource_sampler.sh b/resource_sampler.sh
 #!/usr/bin/env zsh

 # macOS Resource Sampler
 # Version: 1.1
 # This script samples system resources over a specified duration and reports averages.
 #
 # NOTE: Useful for measuring potential differentials in performance with different services disabled / enabled on macOS.

 # Default values
 DURATION=600  # 10 minutes
 INTERVAL=5    # 5 seconds

 # Function to print usage information
 print_usage() {
    echo "Usage: $0 [-d|--duration <seconds>] [-i|--interval <seconds>]"
    echo "  -d, --duration  Duration to run the sampling (default: 600 seconds)"
    echo "  -i, --interval  Interval between samples (default: 5 seconds)"
    echo "  -h, --help      Display this help message"
 }

 # Parse command-line arguments
 while [[ $# -gt 0 ]]; do
    case $1 in
        -d|--duration) DURATION="$2"; shift 2 ;;
        -i|--interval) INTERVAL="$2"; shift 2 ;;
        -h|--help) print_usage; exit 0 ;;
        *) echo "Unknown option: $1"; print_usage; exit 1 ;;
    esac
 done

 # Initialize variables for aggregation
 total_processes=0
 total_user_cpu=0
 total_sys_cpu=0
 total_idle_cpu=0
 total_used_mem=0
 total_unused_mem=0
 sample_count=0

 # Calculate number of iterations
 iterations=$((DURATION / INTERVAL))

 echo "Sampling system resources every $INTERVAL seconds for $DURATION seconds..."

 # Function to update progress
 update_progress() {
    local elapsed=$1
    local remaining=$((DURATION - elapsed))
    local samples_left=$((iterations - sample_count))
    printf "\rElapsed: %ds | Remaining: %ds | Samples left: %d" $elapsed $remaining $samples_left
 }

 # Sampling loop
 start_time=$SECONDS
 for ((i=1; i<=iterations; i++)); do
    # Update progress
    elapsed=$((SECONDS - start_time))
    update_progress $elapsed

    # Sample system resources
    sample=$(top -l 1 | awk '
        /Processes:/ {processes = $2}
        /CPU usage:/ {user_cpu = $3; sys_cpu = $5; idle_cpu = $7}
        /PhysMem:/ {used_mem = $2; unused_mem = $6}
        END {
            gsub(/[^0-9.]/, "", user_cpu)
            gsub(/[^0-9.]/, "", sys_cpu)
            gsub(/[^0-9.]/, "", idle_cpu)
            gsub(/M/, "", used_mem)
            gsub(/M/, "", unused_mem)
            print processes, user_cpu, sys_cpu, idle_cpu, used_mem, unused_mem
        }
    ')
    
    # Aggregate data
    read -r proc user sys idle used unused <<< $sample
    (( total_processes += proc ))
    total_user_cpu=$(echo "$total_user_cpu + $user" | bc)
    total_sys_cpu=$(echo "$total_sys_cpu + $sys" | bc)
    total_idle_cpu=$(echo "$total_idle_cpu + $idle" | bc)
    total_used_mem=$(echo "$total_used_mem + $used" | bc)
    total_unused_mem=$(echo "$total_unused_mem + $unused" | bc)
    (( sample_count++ ))
    
    # Sleep until next sample
    sleep $INTERVAL
 done

 # Clear the progress line
 printf "\r%*s\r" $(tput cols) ""

 # Calculate averages
 avg_processes=$((total_processes / sample_count))
 avg_user_cpu=$(echo "scale=2; $total_user_cpu / $sample_count" | bc)
 avg_sys_cpu=$(echo "scale=2; $total_sys_cpu / $sample_count" | bc)
 avg_idle_cpu=$(echo "scale=2; $total_idle_cpu / $sample_count" | bc)
 avg_used_mem=$(echo "scale=2; $total_used_mem / $sample_count" | bc)
 avg_unused_mem=$(echo "scale=2; $total_unused_mem / $sample_count" | bc)

 # Print results
 echo "Average system resource usage over $DURATION seconds:"
 echo "Processes: $avg_processes"
 echo "CPU usage: ${avg_user_cpu}% user, ${avg_sys_cpu}% sys, ${avg_idle_cpu}% idle"
 echo "Memory: ${avg_used_mem}M used, ${avg_unused_mem}M unused"
	#!/usr/bin/env zsh

	# macOS Resource Sampler
	# Version: 1.1
	# This script samples system resources over a specified duration and reports averages.
	#
	# NOTE: Useful for measuring potential differentials in performance with different services disabled / enabled on macOS.

	# Default values
	DURATION=600 # 10 minutes
	INTERVAL=5 # 5 seconds

	# Function to print usage information
	print_usage() {
	echo "Usage: $0 [-d\|--duration <seconds>] [-i\|--interval <seconds>]"
	echo " -d, --duration Duration to run the sampling (default: 600 seconds)"
	echo " -i, --interval Interval between samples (default: 5 seconds)"
	echo " -h, --help Display this help message"
	}

	# Parse command-line arguments
	while [[ $# -gt 0 ]]; do
	case $1 in
	-d\|--duration) DURATION="$2"; shift 2 ;;
	-i\|--interval) INTERVAL="$2"; shift 2 ;;
	-h\|--help) print_usage; exit 0 ;;
	*) echo "Unknown option: $1"; print_usage; exit 1 ;;
	esac
	done

	# Initialize variables for aggregation
	total_processes=0
	total_user_cpu=0
	total_sys_cpu=0
	total_idle_cpu=0
	total_used_mem=0
	total_unused_mem=0
	sample_count=0

	# Calculate number of iterations
	iterations=$((DURATION / INTERVAL))

	echo "Sampling system resources every $INTERVAL seconds for $DURATION seconds..."

	# Function to update progress
	update_progress() {
	local elapsed=$1
	local remaining=$((DURATION - elapsed))
	local samples_left=$((iterations - sample_count))
	printf "\rElapsed: %ds \| Remaining: %ds \| Samples left: %d" $elapsed $remaining $samples_left
	}

	# Sampling loop
	start_time=$SECONDS
	for ((i=1; i<=iterations; i++)); do
	# Update progress
	elapsed=$((SECONDS - start_time))
	update_progress $elapsed

	# Sample system resources
	sample=$(top -l 1 \| awk '
	/Processes:/ {processes = $2}
	/CPU usage:/ {user_cpu = $3; sys_cpu = $5; idle_cpu = $7}
	/PhysMem:/ {used_mem = $2; unused_mem = $6}
	END {
	gsub(/[^0-9.]/, "", user_cpu)
	gsub(/[^0-9.]/, "", sys_cpu)
	gsub(/[^0-9.]/, "", idle_cpu)
	gsub(/M/, "", used_mem)
	gsub(/M/, "", unused_mem)
	print processes, user_cpu, sys_cpu, idle_cpu, used_mem, unused_mem
	}
	')

	# Aggregate data
	read -r proc user sys idle used unused <<< $sample
	(( total_processes += proc ))
	total_user_cpu=$(echo "$total_user_cpu + $user" \| bc)
	total_sys_cpu=$(echo "$total_sys_cpu + $sys" \| bc)
	total_idle_cpu=$(echo "$total_idle_cpu + $idle" \| bc)
	total_used_mem=$(echo "$total_used_mem + $used" \| bc)
	total_unused_mem=$(echo "$total_unused_mem + $unused" \| bc)
	(( sample_count++ ))

	# Sleep until next sample
	sleep $INTERVAL
	done

	# Clear the progress line
	printf "\r%*s\r" $(tput cols) ""

	# Calculate averages
	avg_processes=$((total_processes / sample_count))
	avg_user_cpu=$(echo "scale=2; $total_user_cpu / $sample_count" \| bc)
	avg_sys_cpu=$(echo "scale=2; $total_sys_cpu / $sample_count" \| bc)
	avg_idle_cpu=$(echo "scale=2; $total_idle_cpu / $sample_count" \| bc)
	avg_used_mem=$(echo "scale=2; $total_used_mem / $sample_count" \| bc)
	avg_unused_mem=$(echo "scale=2; $total_unused_mem / $sample_count" \| bc)

	# Print results
	echo "Average system resource usage over $DURATION seconds:"
	echo "Processes: $avg_processes"
	echo "CPU usage: ${avg_user_cpu}% user, ${avg_sys_cpu}% sys, ${avg_idle_cpu}% idle"
	echo "Memory: ${avg_used_mem}M used, ${avg_unused_mem}M unused"