dockerd: high memory usage #848
Description
- This is a bug report
- This is a feature request
- I searched existing issues before opening this one
Expected behavior
dockerd should use less memory
Actual behavior
dockerd uses 4.5GB+ memory
Steps to reproduce the behavior
Not sure. We run multiple servers with docker and all of them experience high memory usage after some time.
I'm happy to provide any debugging logs as needed.
Output of docker version:
Client: Docker Engine - Community
Version: 19.03.3
API version: 1.40
Go version: go1.12.10
Git commit: a872fc2f86
Built: Tue Oct 8 00:58:10 2019
OS/Arch: linux/amd64
Experimental: false
Server: Docker Engine - Community
Engine:
Version: 19.03.1
API version: 1.40 (minimum version 1.12)
Go version: go1.12.5
Git commit: 74b1e89
Built: Thu Jul 25 21:19:36 2019
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.2.10
GitCommit: b34a5c8af56e510852c35414db4c1f4fa6172339
runc:
Version: 1.0.0-rc8+dev
GitCommit: 3e425f80a8c931f88e6d94a8c831b9d5aa481657
docker-init:
Version: 0.18.0
GitCommit: fec3683
Output of docker info:
Client:
Debug Mode: false
Server:
Containers: 171
Running: 147
Paused: 0
Stopped: 24
Images: 140
Server Version: 19.03.1
Storage Driver: overlay2
Backing Filesystem: xfs
Supports d_type: true
Native Overlay Diff: true
Logging Driver: journald
Cgroup Driver: cgroupfs
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: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: b34a5c8af56e510852c35414db4c1f4fa6172339
runc version: 3e425f80a8c931f88e6d94a8c831b9d5aa481657
init version: fec3683
Security Options:
seccomp
Profile: default
Kernel Version: 3.10.0-1062.1.2.el7.x86_64
Operating System: CentOS Linux 7 (Core)
OSType: linux
Architecture: x86_64
CPUs: 12
Total Memory: 31.05GiB
Name: kkk
ID: 6VZX:5BMH:3O4I:PU5H:YPVC:FYEN:VZUT:O5RW:PMU2:F7K6:DS44:DTWT
Docker Root Dir: /data/docker
Debug Mode: false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: true
WARNING: bridge-nf-call-iptables is disabled
WARNING: bridge-nf-call-ip6tables is disabled
Additional environment details (AWS, VirtualBox, physical, etc.)
- physical server
- API is used to control docker
- logging is done to fluentd
- no mounts are used
- each container exposes one port
- there's plenty of containers which are automatically restarted due to errors on startup (not related to docker) until restart limit is hit and are then stopped (~20-25 containers)
- This appears in the logs pretty often
time="2019-11-08T13:38:15.333931156+01:00" level=info msg="ignoring event" module=libcontainerd namespace=moby topic=/tasks/delete type="*events.TaskDelete"