How to fix Error response from daemon: CPU quota must be greater than 1000 in Docker

# This works: 10000 / 100000 = 0.10 (10% CPU)
docker run --cpu-period=100000 --cpu-quota=10000 myimage

# This fails: quota too low
docker run --cpu-period=100000 --cpu-quota=1000 myimage

# Limit to 0.5 CPUs (50% of one core)
docker run --cpus=0.5 myimage

# Limit to 0.1 CPUs (10% of one core)
docker run --cpus=0.1 myimage

# Limit to 2 CPUs (on multi-core systems)
docker run --cpus=2 myimage

# Minimum valid quota (with default 100ms period = ~1% CPU)
docker run --cpu-quota=1001 myimage

# 5% CPU limit
docker run --cpu-quota=5000 myimage

# 25% CPU limit
docker run --cpu-quota=25000 myimage

# 100% of one CPU (full core)
docker run --cpu-quota=100000 myimage

# Limit to ~0.1% CPU by using a longer period
# 1001 / 1000000 = 0.001 (0.1% CPU)
docker run --cpu-period=1000000 --cpu-quota=1001 myimage

version: "3.9"
services:
  myapp:
    image: myimage
    deploy:
      resources:
        limits:
          cpus: "0.5"

version: "2.4"
services:
  myapp:
    image: myimage
    cpus: 0.5

version: "2.4"
services:
  myapp:
    image: myimage
    cpu_period: 100000
    cpu_quota: 50000  # Must be > 1000

docker compose up
# or for older versions with deploy section:
docker compose --compatibility up

# Update using --cpus (recommended)
docker update --cpus=0.5 mycontainer

# Update using quota directly (must be > 1000)
docker update --cpu-quota=50000 mycontainer

# Update both period and quota
docker update --cpu-period=100000 --cpu-quota=50000 mycontainer

docker inspect --format='{{.HostConfig.CpuQuota}}' mycontainer
docker inspect --format='{{.HostConfig.CpuPeriod}}' mycontainer

# Check current CPU configuration
docker inspect mycontainer | grep -E "(CpuPeriod|CpuQuota|NanoCpus)"

# Monitor CPU usage in real-time
docker stats mycontainer

# Run a CPU stress test inside the container
docker exec mycontainer sh -c "dd if=/dev/zero of=/dev/null &"
docker stats mycontainer  # Should show CPU limited to your configured value

# Find container's cgroup
CONTAINER_ID=$(docker inspect --format='{{.Id}}' mycontainer)
cat /sys/fs/cgroup/cpu/docker/$CONTAINER_ID/cpu.cfs_quota_us
cat /sys/fs/cgroup/cpu/docker/$CONTAINER_ID/cpu.cfs_period_us