Docker Daemon using 300MB - 400MB Ram

Docker Engine General
1

dockerd is using around 300 - 400 mb of ram on my small vps. Is there a way to reduce this memory usage ?

$ docker version
Client: Docker Engine - Community
Version:           24.0.2
API version:       1.43
Go version:        go1.20.4
Git commit:        cb74dfc
Built:             Thu May 25 21:52:07 2023
OS/Arch:           linux/amd64
Context:           default

Server: Docker Engine - Community
Engine:
  Version:          24.0.2
  API version:      1.43 (minimum version 1.12)
  Go version:       go1.20.4
  Git commit:       659604f
  Built:            Thu May 25 21:52:07 2023
  OS/Arch:          linux/amd64
  Experimental:     false
containerd:
  Version:          1.6.21
  GitCommit:        3dce8eb055cbb6872793272b4f20ed16117344f8
runc:
  Version:          1.1.7
  GitCommit:        v1.1.7-0-g860f061
docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0

$ docker info
Client: Docker Engine - Community
Version:    24.0.2
Context:    default
Debug Mode: false
Plugins:
  buildx: Docker Buildx (Docker Inc.)
    Version:  v0.10.5
    Path:     /usr/libexec/docker/cli-plugins/docker-buildx
  compose: Docker Compose (Docker Inc.)
    Version:  v2.18.1
    Path:     /usr/libexec/docker/cli-plugins/docker-compose

Server:
Containers: 5
  Running: 4
  Paused: 0
  Stopped: 1
Images: 5
Server Version: 24.0.2
Storage Driver: overlay2
  Backing Filesystem: extfs
  Supports d_type: true
  Using metacopy: false
  Native Overlay Diff: true
  userxattr: false
Logging Driver: json-file
Cgroup Driver: systemd
Cgroup Version: 2
Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: io.containerd.runc.v2 runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 3dce8eb055cbb6872793272b4f20ed16117344f8
runc version: v1.1.7-0-g860f061
init version: de40ad0
Security Options:
  apparmor
  seccomp
  Profile: builtin
  cgroupns
Kernel Version: 6.1.0-9-amd64
Operating System: Debian GNU/Linux 12 (bookworm)
OSType: linux
Architecture: x86_64
CPUs: 1
Total Memory: 1.921GiB
Name: racknerd-1cf453
ID: 5d55e2de-594f-4193-b62a-998c78b75eeb
Docker Root Dir: /var/lib/docker
Debug Mode: false
Experimental: false
Insecure Registries:
  127.0.0.0/8
Live Restore Enabled: false
2

I long that Docker is running now? On one server where I have 12 containers, my Docker uses 225MB memory, but that server is running for months.

3

it has been running for about 48 hours

4

That doesn’t seem very long. I don’t know why it uses more than 300 MB memory, but I don’t have a Debian 12 to test it if Debian version matters. How did you install Docker? I see the versions, but what commands did you run to install it?

5

I followed the official instrutions. I added a new repository and installed the latest version

6

Do you have any dangling networks/containers/images? maybe that could free up some few megabytes