Slow File I/O on Container VS Host (Docker 1.24, Docker for Mac)

[flyandi]

Description

There seems to be another issue when running docker-compose on Docker for Mac and having a large file base mounted to the container.

Running a large PHP project inside a multi container docker-compose project (Nginx, MySQL, Redis, PHP-FPM - all separate containers running at the same time and connecting via internal backplane).

Running the boot script on the host:

real    0m0.089s
user    0m0.065s
sys 0m0.017s

Running the boot script in the container:

real    0m1.167s
user    0m0.070s
sys 0m0.130s

Describe the results you received:

Container is about 10x slower than host for all File I/O requests.

Describe the results you expected:

Container should the same or almost equal to host file i/o

Output of docker version:

Client:
 Version:      1.12.1
 API version:  1.24
 Go version:   go1.7.1
 Git commit:   6f9534c
 Built:        Thu Sep  8 10:31:18 2016
 OS/Arch:      darwin/amd64

Server:
 Version:      1.12.1
 API version:  1.24
 Go version:   go1.6.3
 Git commit:   23cf638
 Built:        Thu Aug 18 17:52:38 2016
 OS/Arch:      linux/amd64

Output of docker info:

Containers: 5
 Running: 0
 Paused: 0
 Stopped: 5
Images: 70
Server Version: 1.12.1
Storage Driver: aufs
 Root Dir: /var/lib/docker/aufs
 Backing Filesystem: extfs
 Dirs: 96
 Dirperm1 Supported: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge null host overlay
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Security Options: seccomp
Kernel Version: 4.4.20-moby
Operating System: Alpine Linux v3.4
OSType: linux
Architecture: x86_64
CPUs: 5
Total Memory: 3.855 GiB
Name: moby
ID: OORF:UFGL:YOMG:HY4G:SX7M:PCW5:GPDN:XBV7:CVWE:VBNH:4DTH:VKI7
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): true
 File Descriptors: 18
 Goroutines: 30
 System Time: 2016-09-23T17:43:38.899804591Z
 EventsListeners: 1
Registry: https://index.docker.io/v1/
Insecure Registries:
 127.0.0.0/8

Additional environment details (AWS, VirtualBox, physical, etc.):

Using latest Docker For Mac

[geerlingguy]

I think this is a duplicate of #77 (I'm presuming it's I/O, if the PHP project has any significant number of files (e.g. something like a CMS or a framework like Symfony).

[flyandi]

Yeah it's a Lumen project with Doctrine - so lots of lots of files.

[dsheets]

If this is using bind mounts or compose volumes with host file system paths, this is a duplicate of #77 and I will close this in order to track it over there. If that isn't the issue, please feel free to re-open.

[docker-robott]

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This helps our team focus on active issues.

If you have found a problem that seems similar to this, please open a new issue.

Send feedback to Docker Community Slack channels #docker-for-mac or #docker-for-windows.
/lifecycle locked