Dockerd eats 20GB of RAM #32711
Description
Dockerd eats up a huge chunk of memory when there are a lot of containers are starting and stopping on the same server.
Steps to reproduce:
while :; do docker run --rm busybox /bin/false; done
pprof output:
pprof001.zip
Output of docker version:
Client:
Version: 1.12.1
API version: 1.24
Go version: go1.6.3
Git commit: 23cf638
Built: Thu Aug 18 05:33:38 2016
OS/Arch: linux/amd64
Server:
Version: 1.12.1
API version: 1.24
Go version: go1.6.3
Git commit: 23cf638
Built: Thu Aug 18 05:33:38 2016
OS/Arch: linux/amd64
Output of docker info:
Containers: 17
Running: 17
Paused: 0
Stopped: 0
Images: 38
Server Version: 1.12.1
Storage Driver: overlay2
Backing Filesystem: xfs
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local local-persist
Network: host overlay bridge null macvlan
Swarm: active
NodeID: oojd1ntn6u5javok5gdb5dtmn
Is Manager: true
ClusterID: 2wjx7mbqdze2cp25qvfpvwg0l
Managers: 4
Nodes: 4
Orchestration:
Task History Retention Limit: 5
Raft:
Snapshot Interval: 10000
Heartbeat Tick: 1
Election Tick: 3
Dispatcher:
Heartbeat Period: 5 seconds
CA Configuration:
Expiry Duration: 3 months
Node Address: 192.168.17.2
Runtimes: runc
Default Runtime: runc
Security Options: apparmor seccomp
Kernel Version: 4.4.0-34-generic
Operating System: Ubuntu 16.04.1 LTS
OSType: linux
Architecture: x86_64
CPUs: 24
Total Memory: 94.41 GiB
Name: ds1
ID: 6CA2:ROZW:SCEA:EDTR:SZXT:47N4:GA5O:EAAD:6OVN:PK6U:NGQ4:23E6
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
WARNING: No swap limit support
Insecure Registries:
127.0.0.0/8