docker update could not set cpu-rt-runtime

[enzoyes]

This is a bug report
This is a feature request
I searched existing issues before opening this one
Expected behavior
docker update could reset cpu-rt-runtime to zero, because cgourp support this feature.

i don't think #558 solves the problem.

Actual behavior
zero is ignored.

Steps to reproduce the behavior
Output of docker version:

docker version
Client:
Version: 18.09.2
API version: 1.39
Go version: go1.10.6
Git commit: 6247962
Built: Sun Feb 10 04:13:50 2019
OS/Arch: linux/amd64
Experimental: false

Server: Docker Engine - Community
Engine:
Version: 18.09.2
API version: 1.39 (minimum version 1.12)
Go version: go1.10.6
Git commit: 6247962
Built: Sun Feb 10 03:42:13 2019
OS/Arch: linux/amd64
Experimental: false

hosts@XXX:/root docker create rtos-dockerhub.inhuawei.com/lcrd_v2r7_x86_ngip_comp_next /bin/bash
1d8e2b1b8a15dbb9216a061077b8abaa660238f9e19fc2381ed8543b4292e194
hosts@XXX:/root docker update --cpu-rt-runtime 1000 1d8e2b1b8a15dbb9216a061077b8abaa660238f9e19fc2381ed8543b4292e194
1d8e2b1b8a15dbb9216a061077b8abaa660238f9e19fc2381ed8543b4292e194
hosts@XXX:/root docker inspect 1d8e2b1b8a15dbb9216a061077b8abaa660238f9e19fc2381ed8543b4292e194 | grep -i cpu
"CpuShares": 0,
"NanoCpus": 0,
"CpuPeriod": 0,
"CpuQuota": 0,
"CpuRealtimePeriod": 0,
"CpuRealtimeRuntime": 1000,
"CpusetCpus": "",
"CpusetMems": "",
"CpuCount": 0,
"CpuPercent": 0,
host@XXX:/root docker update --cpu-rt-runtime 0 1d8e2b1b8a15dbb9216a061077b8abaa660238f9e19fc2381ed8543b4292e194
1d8e2b1b8a15dbb9216a061077b8abaa660238f9e19fc2381ed8543b4292e194
host@XXX:/root docker inspect 1d8e2b1b8a15dbb9216a061077b8abaa660238f9e19fc2381ed8543b4292e194 | grep -i cpu
"CpuShares": 0,
"NanoCpus": 0,
"CpuPeriod": 0,
"CpuQuota": 0,
"CpuRealtimePeriod": 10000,
"CpuRealtimeRuntime": 1000,
"CpusetCpus": "",
"CpusetMems": "",
"CpuCount": 0,
"CpuPercent": 0,
Output of docker info:

docker info
Containers: 2
Running: 0
Paused: 0
Stopped: 2
Images: 6
Server Version: 18.09.2
Storage Driver: aufs
Root Dir: /var/lib/docker/aufs
Backing Filesystem: extfs
Dirs: 21
Dirperm1 Supported: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: bridge host 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: 9754871865f7fe2f4e74d43e2fc7ccd237edcbce
runc version: 09c8266bf2fcf9519a651b04ae54c967b9ab86ec
init version: fec3683
Security Options:
apparmor
seccomp
Profile: default
Kernel Version: 4.4.0-124-generic
Operating System: Ubuntu 16.04.4 LTS
OSType: linux
Architecture: x86_64
CPUs: 8
Total Memory: 7.78GiB
Name: hostvm-ubuntu16
ID: MZLR:EORX:INBW:ECY4:6HFF:UQRP:ID6I:7LYI:633U:HYTW:63X7:EOAN
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
rtos-dockerhub.inhuawei.com
127.0.0.0/8
Live Restore Enabled: false
Product License: Community Engine

[olljanat]

@ranchothu it is very hard to understand what you are actually asking and what all those outputs means.
Can you please look https://github.com/adam-p/markdown-here/wiki/Markdown-Cheatsheet how to get you message formatted to easily readable format? And also add some more explanation that what you are actually looking for?