7.2 Performance Tuning

Resource Optimization

Implement Resource Limits:

# Add to high-resource services
deploy:
  resources:
    limits:
      memory: 2G
      cpus: '1.0'
    reservations:
      memory: 1G
      cpus: '0.5'

Database Performance Tuning:

PostgreSQL Optimization:

# Create custom PostgreSQL configuration
# /mnt/swarm-data/postgres/postgresql.conf
shared_buffers = 256MB
effective_cache_size = 1GB
maintenance_work_mem = 64MB
checkpoint_completion_target = 0.9
wal_buffers = 16MB
default_statistics_target = 100
random_page_cost = 1.1

MariaDB Optimization:

# Custom MariaDB configuration
# /mnt/swarm-data/mariadb/my.cnf
[mysqld]
innodb_buffer_pool_size = 512M
innodb_log_file_size = 128M
max_connections = 100
query_cache_size = 64M

Redis Optimization:

# Optimize Redis for authentication workload
auth_authentik_redis:
  command: >
    --save 60 1000
    --maxmemory 256mb
    --maxmemory-policy allkeys-lru
    --tcp-keepalive 60

Network Performance

Optimize Overlay Networks:

# Monitor network performance
docker network inspect homelab

# Check VXLAN overhead
ip -d link show

# Optimize MTU settings if needed
# /etc/docker/daemon.json
{
  "mtu": 1450
}

Traefik Performance Tuning:

# Optimize Traefik for high load
command:
  - --entrypoints.web.transport.respondingTimeouts.readTimeout=60s
  - --entrypoints.web.transport.respondingTimeouts.writeTimeout=60s
  - --providers.swarm.refreshSeconds=30s
  - --ping.entryPoint=traefik
  - --metrics.prometheus=true

Storage Performance

Optimize Bind Mount Performance:

# Use noatime mount option for performance
# /etc/fstab
/dev/nvme0n1p1 /mnt ext4 defaults,noatime,discard 0 2

# Monitor I/O performance
iostat -x 1
iotop -o

Database Storage Optimization:

# Separate database storage for better performance
# Consider separate mount points:
# /mnt/postgres-data  - PostgreSQL
# /mnt/mariadb-data   - MariaDB
# /mnt/app-data       - Application files

Volume Driver Optimization:

# For high-performance workloads, consider
# local volumes with direct device access
volumes:
  high_perf_data:
    driver: local
    driver_opts:
      type: none
      o: bind,noatime
      device: /mnt/nvme-fast/data