2edb4a73c3
- Fixed missing setup_tmpfs() function that was causing silent failures - Added comprehensive system scanning for browsers, IDEs, gaming caches - Implemented detailed optimization information display for transparency - Added German locale compatibility for 'free' command (Speicher: vs Mem:) - Fixed division by zero errors in RAM calculations - Created tmpfs-info.sh helper script for detailed status reporting - Enhanced scanning to work on already-optimized systems - Added comprehensive optimization breakdowns with purpose explanations
426 lines
12 KiB
Bash
Executable File
426 lines
12 KiB
Bash
Executable File
#!/bin/bash
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# System Monitoring and Health Check
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# Part of Linux System Tuning Suite
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set -euo pipefail
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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LOG_DIR="/var/log/system-tuning"
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METRICS_FILE="$LOG_DIR/metrics.log"
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# Colors
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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NC='\033[0m'
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log() {
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echo -e "${BLUE}[$(date '+%H:%M:%S')]${NC} $1"
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}
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warn() {
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echo -e "${YELLOW}[WARNING]${NC} $1"
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}
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error() {
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echo -e "${RED}[ERROR]${NC} $1"
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}
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success() {
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echo -e "${GREEN}[SUCCESS]${NC} $1"
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}
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show_usage() {
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cat << EOF
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System Monitoring Tool
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Usage: $0 [OPTIONS] [MODE]
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OPTIONS:
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-h, --help Show this help message
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-l, --log Log metrics to file
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-d, --duration SEC Monitoring duration in seconds (default: continuous)
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MODES:
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status Show current status (default)
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live Live monitoring with updates
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benchmark Run performance benchmarks
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health Health check of optimizations
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compare Compare performance before/after
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export Export metrics for external analysis
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EXAMPLES:
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$0 # Show current status
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$0 live # Live monitoring
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$0 health # Health check
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$0 benchmark # Run benchmarks
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EOF
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}
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setup_logging() {
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if [[ ! -d "$LOG_DIR" ]]; then
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sudo mkdir -p "$LOG_DIR"
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sudo chown $USER:$USER "$LOG_DIR" 2>/dev/null || true
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fi
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}
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collect_metrics() {
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local timestamp=$(date '+%Y-%m-%d %H:%M:%S')
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# Memory metrics
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local mem_info=$(free -m | awk '/^Mem:/{printf "total:%s,used:%s,free:%s,available:%s", $2,$3,$4,$7}')
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local swap_info=$(free -m | awk '/^Swap:/{printf "total:%s,used:%s,free:%s", $2,$3,$4}')
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# zram metrics
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local zram_info=""
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if [[ -e /dev/zram0 ]]; then
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local zram_size=$(cat /sys/block/zram0/disksize 2>/dev/null || echo "0")
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local zram_used=$(cat /sys/block/zram0/compr_data_size 2>/dev/null || echo "0")
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local zram_orig=$(cat /sys/block/zram0/orig_data_size 2>/dev/null || echo "0")
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zram_info="size:$zram_size,used:$zram_used,orig:$zram_orig"
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fi
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# tmpfs metrics
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local tmpfs_count=$(mount -t tmpfs | wc -l)
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local tmpfs_total=$(df -t tmpfs --total | tail -1 | awk '{print $2}' 2>/dev/null || echo "0")
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local tmpfs_used=$(df -t tmpfs --total | tail -1 | awk '{print $3}' 2>/dev/null || echo "0")
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# System load
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local load_avg=$(uptime | awk -F'load average:' '{print $2}' | sed 's/^ *//')
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# I/O stats
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local io_stats=""
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if command -v iostat >/dev/null 2>&1; then
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io_stats=$(iostat -d 1 2 | tail -n +4 | awk 'NR>1{tps+=$2; read+=$3; write+=$4} END{printf "tps:%.2f,read:%.2f,write:%.2f", tps, read, write}')
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fi
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cat << EOF
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{
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"timestamp": "$timestamp",
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"memory": {$mem_info},
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"swap": {$swap_info},
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"zram": {$zram_info},
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"tmpfs": {"count": $tmpfs_count, "total_kb": $tmpfs_total, "used_kb": $tmpfs_used},
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"load": "$load_avg",
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"io": {$io_stats}
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}
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EOF
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}
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show_status() {
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echo "🚀 System Tuning Status"
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echo "======================="
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echo ""
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# Memory overview
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echo "💾 Memory Overview:"
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free -h | while IFS= read -r line; do
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echo " $line"
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done
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echo ""
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# zram status
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echo "🔄 Compression (zram):"
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if [[ -e /dev/zram0 ]]; then
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if command -v zramctl >/dev/null 2>&1; then
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zramctl | while IFS= read -r line; do
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echo " $line"
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done
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else
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local zram_size=$(cat /sys/block/zram0/disksize 2>/dev/null)
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local zram_used=$(cat /sys/block/zram0/compr_data_size 2>/dev/null)
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echo " Size: $((zram_size / 1024 / 1024 / 1024))GB"
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echo " Used: $((zram_used / 1024 / 1024))MB"
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fi
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else
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echo " Not configured"
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fi
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echo ""
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# tmpfs overview
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echo "📁 tmpfs Filesystems:"
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df -h -t tmpfs | while IFS= read -r line; do
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echo " $line"
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done
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echo ""
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# Kernel parameters
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echo "⚙️ Key Kernel Parameters:"
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echo " Swappiness: $(cat /proc/sys/vm/swappiness)"
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echo " Dirty ratio: $(cat /proc/sys/vm/dirty_ratio)"
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echo " Dirty background ratio: $(cat /proc/sys/vm/dirty_background_ratio)"
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echo " VFS cache pressure: $(cat /proc/sys/vm/vfs_cache_pressure)"
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echo ""
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# Service status
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echo "🔧 Services:"
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if systemctl is-enabled system-tuning.service >/dev/null 2>&1; then
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echo " System tuning service: ✅ ENABLED"
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else
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echo " System tuning service: ❌ DISABLED"
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fi
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# Performance score
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echo ""
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echo "📊 Performance Score: $(calculate_performance_score)/100"
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}
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live_monitoring() {
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local duration=${1:-0}
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local count=0
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echo "📊 Live System Monitoring"
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echo "========================"
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echo "Press Ctrl+C to stop"
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echo ""
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while true; do
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clear
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echo "🔄 Live Monitor - $(date) (Update #$((++count)))"
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echo "=================================================="
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echo ""
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# Real-time metrics
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echo "Memory Usage:"
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free -h | head -2
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echo ""
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echo "Top tmpfs by usage:"
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df -h -t tmpfs | sort -k5 -nr | head -5 | while IFS= read -r line; do
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echo " $line"
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done
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echo ""
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echo "zram compression ratio:"
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if [[ -e /dev/zram0 ]]; then
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local orig=$(cat /sys/block/zram0/orig_data_size 2>/dev/null || echo "0")
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local compr=$(cat /sys/block/zram0/compr_data_size 2>/dev/null || echo "0")
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if [[ $orig -gt 0 && $compr -gt 0 ]]; then
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local ratio=$(echo "scale=2; $orig / $compr" | bc -l 2>/dev/null || echo "N/A")
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echo " Compression: ${ratio}:1"
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echo " Original: $((orig / 1024 / 1024))MB"
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echo " Compressed: $((compr / 1024 / 1024))MB"
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else
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echo " No compression data available"
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fi
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else
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echo " zram not active"
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fi
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echo ""
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echo "System Load: $(uptime | awk -F'load average:' '{print $2}')"
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# Log metrics if enabled
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if [[ -f "$METRICS_FILE" ]]; then
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collect_metrics >> "$METRICS_FILE"
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fi
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sleep 2
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# Exit if duration specified and reached
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if [[ $duration -gt 0 && $count -ge $duration ]]; then
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break
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fi
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done
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}
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run_benchmark() {
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echo "🏁 Performance Benchmark"
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echo "========================"
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echo ""
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log "Running memory performance tests..."
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# Memory speed test
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echo "Memory Performance:"
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if command -v dd >/dev/null 2>&1; then
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echo " Write test (1GB to tmpfs):"
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time (dd if=/dev/zero of=/tmp/benchmark-test bs=1M count=1024 2>/dev/null && sync)
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rm -f /tmp/benchmark-test
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echo ""
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fi
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# Application startup test
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echo "Application Startup Test:"
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if command -v time >/dev/null 2>&1; then
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echo " Shell startup:"
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time bash -c "exit" 2>&1 | grep real || echo " Could not measure"
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if command -v python3 >/dev/null 2>&1; then
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echo " Python startup:"
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time python3 -c "pass" 2>&1 | grep real || echo " Could not measure"
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fi
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fi
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echo ""
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# I/O performance
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if command -v iostat >/dev/null 2>&1; then
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echo "Current I/O performance:"
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iostat -x 1 1 | tail -n +4
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fi
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echo ""
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success "Benchmark completed"
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}
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health_check() {
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echo "🏥 System Health Check"
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echo "====================="
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echo ""
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local issues=0
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local warnings=0
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# Check zram
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if [[ -e /dev/zram0 ]]; then
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if swapon --show | grep -q zram0; then
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success "zram swap is active"
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else
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error "zram device exists but swap is not active"
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((issues++))
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fi
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else
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warn "zram not configured"
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((warnings++))
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fi
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# Check tmpfs mounts
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local tmpfs_count=$(mount -t tmpfs | wc -l)
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if [[ $tmpfs_count -gt 5 ]]; then
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success "Multiple tmpfs mounts detected ($tmpfs_count)"
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else
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warn "Few tmpfs mounts detected ($tmpfs_count) - consider more optimizations"
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((warnings++))
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fi
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# Check memory usage
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local mem_usage=$(free | awk '/^Mem:/{printf "%.0f", $3/$2*100}')
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if [[ $mem_usage -lt 80 ]]; then
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success "Memory usage is healthy ($mem_usage%)"
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else
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warn "High memory usage ($mem_usage%) - monitor for performance impact"
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((warnings++))
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fi
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# Check swap usage
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local swap_usage=$(free | awk '/^Swap:/{if($2>0) printf "%.0f", $3/$2*100; else print "0"}')
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if [[ $swap_usage -lt 50 ]]; then
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success "Swap usage is reasonable ($swap_usage%)"
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else
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warn "High swap usage ($swap_usage%) - consider adding more RAM"
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((warnings++))
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fi
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# Check service status
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if systemctl is-active system-tuning.service >/dev/null 2>&1; then
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success "System tuning service is running"
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else
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warn "System tuning service is not running"
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((warnings++))
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fi
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echo ""
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echo "Health Summary:"
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echo " Issues: $issues"
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echo " Warnings: $warnings"
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if [[ $issues -eq 0 && $warnings -eq 0 ]]; then
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success "System is optimally configured! 🎉"
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elif [[ $issues -eq 0 ]]; then
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warn "System is mostly optimized with $warnings minor warnings"
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else
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error "System has $issues issues that need attention"
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fi
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}
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calculate_performance_score() {
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local score=0
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# Base score
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score=30
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# zram bonus
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[[ -e /dev/zram0 ]] && score=$((score + 20))
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# tmpfs bonus
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local tmpfs_count=$(mount -t tmpfs | wc -l)
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if [[ $tmpfs_count -gt 8 ]]; then
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score=$((score + 25))
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elif [[ $tmpfs_count -gt 5 ]]; then
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score=$((score + 15))
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fi
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# Kernel parameter optimization
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local swappiness=$(cat /proc/sys/vm/swappiness)
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[[ $swappiness -le 10 ]] && score=$((score + 10))
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# Service bonus
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systemctl is-enabled system-tuning.service >/dev/null 2>&1 && score=$((score + 15))
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echo $score
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}
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main() {
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local mode="status"
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local log_metrics=false
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local duration=0
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# Parse arguments
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while [[ $# -gt 0 ]]; do
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case $1 in
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-h|--help)
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show_usage
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exit 0
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;;
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-l|--log)
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log_metrics=true
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shift
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;;
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-d|--duration)
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duration="$2"
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shift 2
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;;
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status|live|benchmark|health|compare|export)
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mode="$1"
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shift
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;;
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*)
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error "Unknown option: $1"
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show_usage
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exit 1
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;;
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esac
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done
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# Setup logging if requested
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if [[ "$log_metrics" == "true" ]]; then
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setup_logging
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fi
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# Execute requested mode
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case "$mode" in
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status)
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show_status
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;;
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live)
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live_monitoring "$duration"
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;;
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benchmark)
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run_benchmark
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;;
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health)
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health_check
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;;
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*)
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error "Mode '$mode' not implemented yet"
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exit 1
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;;
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esac
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}
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# Run if called directly
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if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
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main "$@"
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fi |