--cpus limitation does not work correctly with some containers on Windows Docker #32014
Description
Hello there,
I saw in docker stats that we have containers which were consuming ~ 15-20% CPU
docker stats --no-stream
CONTAINER CPU % PRIV WORKING SET NET I/O BLOCK I/O
...
2c94b939486c 16.25% 23.63 GiB 3.15 GB / 80.1 MB 48.8 MB / 637 MB
8fc83caae394 14.62% 23.48 GiB 1.67 GB / 40.7 MB 47.5 MB / 353 MB
156d442d7f4e 17.24% 23.41 GiB 3.35 GB / 127 MB 47.9 MB / 682 MB
And all of them have CPU limitatiion "--cpus 0.3"
docker inspect --format "{{.HostConfig.NanoCpus}}" 2c94b939486c 8fc83caae394 156d442d7f4e
3e+08
3e+08
3e+08
docker info shows 64 CPUs so 15-120% is quite enormous value for the "--cpus 0.3"
All our containers are runing with this --cpus limitation and usually they are not consuming more then 2% of CPU. The main difference of that containers that they perform aggressive calculation with a lot of Memory consumption up to 100 GiB. May be it make sense.
What information I can also collect for farther investigation?
Thanks!
Output of docker version:
Client:
Version: 1.13.0
API version: 1.25
Go version: go1.7.3
Git commit: 49bf474
Built: Tue Jan 17 21:19:34 2017
OS/Arch: windows/amd64
Server:
Version: 1.13.1-cs1
API version: 1.26 (minimum version 1.24)
Go version: go1.7.5
Git commit: 8709b81
Built: Thu Feb 9 02:05:36 2017
OS/Arch: windows/amd64
Experimental: false
Output of docker info:
Containers: 292
Running: 110
Paused: 0
Stopped: 182
Images: 2816
Server Version: 1.13.1-cs1
Storage Driver: windowsfilter
Windows:
Logging Driver: json-file
Plugins:
Volume: local
Network: l2bridge l2tunnel nat null overlay transparent
Swarm: inactive
Default Isolation: process
Kernel Version: 10.0 14393 (14393.693.amd64fre.rs1_release.161220-1747)
Operating System: Windows Server 2016 Datacenter
OSType: windows
Architecture: x86_64
CPUs: 64
Total Memory: 1.906 TiB
Name: ... skiped ...
ID: ... skiped ...
Docker Root Dir: E:\docker_storage_1_13
Debug Mode (client): false
Debug Mode (server): true
File Descriptors: -1
Goroutines: 963
System Time: 2017-03-22T14:06:35.2023919Z
EventsListeners: 1
Registry: https://index.docker.io/v1/
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
Additional environment details (AWS, VirtualBox, physical, etc.):
It is x1.x32large EC2 instance on Dedicated host.