oops my b i see this now

but we could use a valid one too

Hi @jfrazelle I planted to add a valid one. But it seems it's not easy to find out what block device does the janky have.

can you add (device:weight)?

added

Not your fault, but it looks like the rest of this example uses tabs for indentation 😞

Can you change to tabs to match the other lines? (just for this instance, because we normally use spaces) ☺️

fixed

@Mashimiao Thank you for the contribution. You missed some tics in there and there are also some slightly awkward structs. Please move the note which states a limitation to the top of the section.

---> https://gist.github.com/moxiegirl/a7bc16b00dbdb0c45bac

Block IO bandwidth (Blkio) constraint

By default, all containers get the same proportion of block IO bandwidth
(blkio). This proportion is 500. To modify this proportion, change the
container's blkio weight relative to the weighting of all other running
containers using the --blkio-weight flag.

Note: The blkio weight setting is only available for direct IO. Buffered IO
is not currently supported.

The --blkio-weight flag takes a weight between 10 to 1000.
For example, the commands below create two containers with different blkio
weight:

    $ docker run -ti --name c1 --blkio-weight 300 ubuntu:14.04 /bin/bash
    $ docker run -ti --name c2 --blkio-weight 600 ubuntu:14.04 /bin/bash

If you do block IO in the two containers at the same time, for example:

    $ time dd if=/mnt/zerofile of=test.out bs=1M count=1024 oflag=direct

You'll find that the proportion of time is the same as the proportion of blkio
weights of the two containers.

The --blkio-weight-device="DEVICE_NAME:WEIGHT" flag sets a specific device
weight. The DEVICE_NAME:WEIGHT is a string containing a colon-separated device
name and weight. For example, to set /dev/sda device weight to 200:

$ docker run -it \
    --blkio-weight-device "/dev/sda:200" \
    ubuntu

If you specify both the --blkio-weight and --blkio-weight-device, Docker
uses the --blkio-weight as the default weight and uses --blkio-weight-device
to override with a different weight on a specific device. The following example uses a default weight of 300 and overrides this default
on /dev/sda setting with a weight of 200:

$ docker run -it \
    --blkio-weight 300 \
    --blkio-weight-device "/dev/sda:200" \
    ubuntu

Thanks, fixed

@Mashimiao did you push your changes? I see the note is still at the bottom (havent checked other changes)

@thaJeztah sorry, I forgot to push my changes

A pfew almost thought I needed new glasses 👓 haha

erm, but I still don't see the changes?

@thaJeztah Sorry, forgot to modify. Already fixed