Initial commit: Linux System Tuning Suite
- Intelligent hardware detection and analysis - Modular optimization system with profiles - Automatic tmpfs, zram, and kernel tuning - Real-time monitoring and health checks - Support for desktop, gaming, and development workloads - Safe backup and rollback capabilities - Systemd integration for persistent optimizations
This commit is contained in:
root
511
tune-system.sh
Executable file
511
tune-system.sh
Executable file
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#!/bin/bash
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# Linux System Tuning Suite - Main Orchestrator
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# Intelligent system optimization based on hardware and usage analysis
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set -euo pipefail
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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MODULES_DIR="$SCRIPT_DIR/modules"
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PROFILES_DIR="$SCRIPT_DIR/profiles"
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CONFIG_DIR="$SCRIPT_DIR/configs"
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BACKUP_DIR="/var/lib/system-tuning/backups"
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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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# Global variables
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DRY_RUN=false
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VERBOSE=false
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AUTO_MODE=false
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PROFILE=""
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FORCE=false
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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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Linux System Tuning Suite
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Usage: $0 [OPTIONS] [ACTIONS]
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OPTIONS:
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-h, --help Show this help message
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-v, --verbose Enable verbose output
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-n, --dry-run Show what would be done without making changes
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-f, --force Force operations without confirmation
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-p, --profile NAME Use specific optimization profile
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ACTIONS:
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--analyze Run system analysis only
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--auto Automatic optimization based on system analysis
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--enable-zram Configure zram compression
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--enable-tmpfs Set up tmpfs optimizations
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--tune-kernel Optimize kernel parameters
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--create-service Install systemd service for persistent optimizations
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--benchmark Run performance benchmarks
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--rollback Restore previous configuration
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--status Show current optimization status
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PROFILES:
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desktop Desktop/workstation optimization (default)
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server Server optimization
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gaming Gaming-focused optimization
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development Development workstation optimization
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minimal Minimal safe optimizations
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EXAMPLES:
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$0 --analyze # Analyze system only
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$0 --auto # Automatic optimization
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$0 --profile gaming --auto # Gaming-optimized setup
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$0 --dry-run --auto # Show what would be done
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$0 --enable-zram --enable-tmpfs # Specific optimizations
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EOF
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}
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check_root() {
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if [[ $EUID -ne 0 ]]; then
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error "This script must be run as root"
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echo "Usage: sudo $0 [options]"
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exit 1
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fi
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}
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setup_directories() {
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mkdir -p "$BACKUP_DIR"
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mkdir -p /var/lib/system-tuning/configs
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mkdir -p /var/lib/system-tuning/logs
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}
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load_modules() {
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for module in "$MODULES_DIR"/*.sh; do
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if [[ -f "$module" ]]; then
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source "$module"
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[[ "$VERBOSE" == "true" ]] && log "Loaded module: $(basename "$module")"
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fi
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done
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}
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create_backup() {
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local backup_name="backup-$(date +%Y%m%d-%H%M%S)"
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local backup_path="$BACKUP_DIR/$backup_name"
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mkdir -p "$backup_path"
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log "Creating system backup..."
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# Backup important configs
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[[ -f /etc/sysctl.conf ]] && cp /etc/sysctl.conf "$backup_path/"
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[[ -f /etc/fstab ]] && cp /etc/fstab "$backup_path/"
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# Save current state
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free -h > "$backup_path/memory-before.txt"
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mount > "$backup_path/mounts-before.txt"
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sysctl -a > "$backup_path/sysctl-before.txt" 2>/dev/null
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echo "$backup_name" > /var/lib/system-tuning/last-backup
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success "Backup created: $backup_path"
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}
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analyze_system() {
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log "Running system analysis..."
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if [[ -f "$SCRIPT_DIR/system-analyzer.sh" ]]; then
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bash "$SCRIPT_DIR/system-analyzer.sh"
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else
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error "System analyzer not found"
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return 1
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fi
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}
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auto_optimize() {
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log "Starting automatic optimization..."
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# Run analysis first
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analyze_system
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# Determine optimal configuration based on hardware
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local ram_gb=$(free -g | awk '/^Mem:/{print $2}')
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local cpu_cores=$(nproc)
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log "Detected: ${ram_gb}GB RAM, ${cpu_cores} CPU cores"
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# Apply optimizations based on available RAM
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if [[ $ram_gb -ge 16 ]]; then
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log "High-memory system detected (≥16GB) - applying aggressive optimizations"
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enable_zram "12G"
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enable_tmpfs_cache "large"
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tune_kernel_params "desktop-high-memory"
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elif [[ $ram_gb -ge 8 ]]; then
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log "Medium-memory system detected (8-15GB) - applying moderate optimizations"
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enable_zram "6G"
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enable_tmpfs_cache "medium"
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tune_kernel_params "desktop"
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elif [[ $ram_gb -ge 4 ]]; then
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log "Low-memory system detected (4-7GB) - applying conservative optimizations"
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enable_zram "4G"
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enable_tmpfs_cache "small"
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tune_kernel_params "desktop-low-memory"
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else
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warn "Very low memory system (<4GB) - applying minimal optimizations only"
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enable_zram "2G"
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tune_kernel_params "minimal"
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fi
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create_systemd_service
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success "Automatic optimization complete!"
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}
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enable_zram() {
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local size=${1:-"8G"}
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log "Configuring zram with size: $size"
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if [[ "$DRY_RUN" == "true" ]]; then
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echo "[DRY RUN] Would configure zram with size $size"
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return
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fi
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# Check if zram module exists
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if ! modinfo zram >/dev/null 2>&1; then
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error "zram module not available"
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return 1
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fi
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# Configure zram
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if [[ -e /dev/zram0 ]]; then
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swapoff /dev/zram0 2>/dev/null || true
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echo 1 > /sys/class/zram-control/hot_remove 2>/dev/null || true
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fi
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modprobe zram num_devices=1
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echo "$size" > /sys/block/zram0/disksize
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mkswap /dev/zram0
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swapon /dev/zram0
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success "zram configured with $size"
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}
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enable_tmpfs_cache() {
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local profile=${1:-"medium"}
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log "Setting up tmpfs cache optimization (profile: $profile)"
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if [[ "$DRY_RUN" == "true" ]]; then
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echo "[DRY RUN] Would set up tmpfs cache with profile: $profile"
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return
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fi
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# Create tmpfs directories
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mkdir -p /tmp/tmpfs-cache/{browser,ide,packages,thumbnails}
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case "$profile" in
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"large")
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mount -t tmpfs -o size=4G tmpfs /tmp/tmpfs-cache/browser
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mount -t tmpfs -o size=2G tmpfs /tmp/tmpfs-cache/ide
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mount -t tmpfs -o size=3G tmpfs /tmp/tmpfs-cache/packages
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mount -t tmpfs -o size=512M tmpfs /tmp/tmpfs-cache/thumbnails
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;;
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"medium")
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mount -t tmpfs -o size=2G tmpfs /tmp/tmpfs-cache/browser
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mount -t tmpfs -o size=1G tmpfs /tmp/tmpfs-cache/ide
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mount -t tmpfs -o size=2G tmpfs /tmp/tmpfs-cache/packages
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mount -t tmpfs -o size=256M tmpfs /tmp/tmpfs-cache/thumbnails
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;;
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"small")
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mount -t tmpfs -o size=1G tmpfs /tmp/tmpfs-cache/browser
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mount -t tmpfs -o size=512M tmpfs /tmp/tmpfs-cache/ide
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mount -t tmpfs -o size=1G tmpfs /tmp/tmpfs-cache/packages
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mount -t tmpfs -o size=128M tmpfs /tmp/tmpfs-cache/thumbnails
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;;
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esac
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# Bind mount package cache
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if [[ -d /var/cache/apt ]]; then
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mount --bind /tmp/tmpfs-cache/packages /var/cache/apt
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fi
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success "tmpfs cache optimization enabled"
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}
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tune_kernel_params() {
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local profile=${1:-"desktop"}
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log "Tuning kernel parameters (profile: $profile)"
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if [[ "$DRY_RUN" == "true" ]]; then
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echo "[DRY RUN] Would tune kernel parameters with profile: $profile"
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return
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fi
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local sysctl_conf="/etc/sysctl.d/99-system-tuning.conf"
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cat > "$sysctl_conf" << EOF
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# System Tuning - Generated $(date)
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# Profile: $profile
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EOF
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case "$profile" in
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"desktop-high-memory")
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cat >> "$sysctl_conf" << EOF
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# High-memory desktop optimization
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vm.swappiness = 1
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vm.dirty_ratio = 3
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vm.dirty_background_ratio = 1
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vm.vfs_cache_pressure = 40
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vm.page-cluster = 0
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EOF
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;;
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"desktop")
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cat >> "$sysctl_conf" << EOF
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# Desktop optimization
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vm.swappiness = 5
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vm.dirty_ratio = 5
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vm.dirty_background_ratio = 2
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vm.vfs_cache_pressure = 50
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vm.page-cluster = 0
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EOF
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;;
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"desktop-low-memory")
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cat >> "$sysctl_conf" << EOF
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# Low-memory desktop optimization
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vm.swappiness = 10
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vm.dirty_ratio = 10
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vm.dirty_background_ratio = 5
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vm.vfs_cache_pressure = 100
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EOF
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;;
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"minimal")
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cat >> "$sysctl_conf" << EOF
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# Minimal safe optimization
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vm.swappiness = 10
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vm.dirty_ratio = 10
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vm.dirty_background_ratio = 5
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EOF
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;;
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esac
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# Apply immediately
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sysctl -p "$sysctl_conf"
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success "Kernel parameters tuned"
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}
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create_systemd_service() {
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log "Creating systemd service for persistent optimizations"
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if [[ "$DRY_RUN" == "true" ]]; then
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echo "[DRY RUN] Would create systemd service"
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return
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fi
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# Create startup script
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cat > /usr/local/bin/system-tuning-startup.sh << 'EOF'
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#!/bin/bash
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# System Tuning Startup Script
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# Auto-generated by Linux System Tuning Suite
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log() {
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echo "[$(date '+%H:%M:%S')] $1" | systemd-cat -t system-tuning
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}
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log "Starting system optimizations..."
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# Recreate tmpfs mounts
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if [[ -d /tmp/tmpfs-cache ]]; then
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for cache_dir in /tmp/tmpfs-cache/*; do
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if [[ -d "$cache_dir" ]] && ! mountpoint -q "$cache_dir"; then
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size=$(df -h "$cache_dir" 2>/dev/null | awk 'NR==2{print $2}' || echo "1G")
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mount -t tmpfs -o size="$size" tmpfs "$cache_dir"
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log "Mounted tmpfs: $cache_dir ($size)"
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fi
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done
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fi
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# Ensure zram is configured
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if [[ ! -e /dev/zram0 ]]; then
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modprobe zram num_devices=1 2>/dev/null || true
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if [[ -e /sys/block/zram0/disksize ]]; then
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echo "8G" > /sys/block/zram0/disksize
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mkswap /dev/zram0
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swapon /dev/zram0
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log "Configured zram swap"
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fi
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fi
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log "System optimizations applied"
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EOF
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chmod +x /usr/local/bin/system-tuning-startup.sh
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# Create systemd service
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cat > /etc/systemd/system/system-tuning.service << EOF
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[Unit]
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Description=System Performance Tuning
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After=multi-user.target
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Wants=multi-user.target
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[Service]
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Type=oneshot
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ExecStart=/usr/local/bin/system-tuning-startup.sh
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RemainAfterExit=yes
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StandardOutput=journal
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StandardError=journal
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[Install]
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WantedBy=multi-user.target
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EOF
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systemctl daemon-reload
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systemctl enable system-tuning.service
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success "Systemd service created and enabled"
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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 "💾 Memory:"
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free -h
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echo
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echo "🔄 Swap/zram:"
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if command -v zramctl >/dev/null 2>&1; then
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zramctl 2>/dev/null || echo "No zram devices"
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else
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echo "zramctl not available"
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fi
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echo
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echo "📁 tmpfs mounts:"
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df -h | grep tmpfs | head -10
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echo
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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 " VFS cache pressure: $(cat /proc/sys/vm/vfs_cache_pressure)"
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echo
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echo "🔧 Service status:"
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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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}
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parse_args() {
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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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-v|--verbose)
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VERBOSE=true
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shift
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;;
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-n|--dry-run)
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DRY_RUN=true
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shift
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;;
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-f|--force)
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FORCE=true
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shift
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;;
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-p|--profile)
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PROFILE="$2"
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shift 2
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;;
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--analyze)
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analyze_system
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exit 0
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;;
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--auto)
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AUTO_MODE=true
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shift
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;;
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--enable-zram)
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enable_zram
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shift
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;;
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--enable-tmpfs)
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enable_tmpfs_cache
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shift
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;;
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--tune-kernel)
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tune_kernel_params
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shift
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;;
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--create-service)
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create_systemd_service
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shift
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;;
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--status)
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show_status
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exit 0
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;;
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*)
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error "Unknown option: $1"
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show_usage
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exit 1
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;;
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esac
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done
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}
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main() {
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echo "🚀 Linux System Tuning Suite"
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echo "=============================="
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check_root
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setup_directories
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# Load modules if available
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if [[ -d "$MODULES_DIR" ]]; then
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load_modules
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fi
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# Parse arguments
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parse_args "$@"
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# If no specific action, show usage
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if [[ "$AUTO_MODE" != "true" ]] && [[ $# -eq 0 ]]; then
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show_usage
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exit 0
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fi
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# Create backup before making changes
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if [[ "$DRY_RUN" != "true" ]]; then
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create_backup
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fi
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# Execute auto mode if requested
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if [[ "$AUTO_MODE" == "true" ]]; then
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auto_optimize
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fi
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success "Operation completed successfully!"
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}
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# Run main function if script is executed directly
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if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
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main "$@"
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fi
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Reference in New Issue
Block a user