File access in mounted volumes extremely slow, CPU bound

Docker Desktop for Mac
69

Tried same test again with beta13, it’s faster, but still slow compared to VirtualBox:

  • Macbook Pro - OS X El Capitan v10.11.5

  • Docker app version - Version 1.11.1-beta12 (build: 7528)

Docker Mac Beta:

/Users/andres1 #  time dd if=/dev/zero of=test.dat bs=1024 count=10000
10000+0 records in
10000+0 records out
real	0m 2.40s
user	0m 0.03s
sys	0m 0.15s

Default docker-machine, Oracle VM, mounted /Users using NFS:

/Users/andres1 # time dd if=/dev/zero of=test.dat bs=1024 count=10000
10000+0 records in
10000+0 records out
real	0m 0.07s
user	0m 0.00s
sys	0m 0.03s

~1s improvement compared to beta12