Human readable duration problem for metrics visualisations

[ruflin]

We use the duration formatter to better visualise durations for some metricbeat data. Unfortunately for metrics very close together but larger then 1 second this can have the affect as below which makes the formatting not optimal.

I think for our use case we need a different duration formatter that converts 2300ms to 2.3s instead of "a few seconds ago".

[jen-huang]

@ruflin Would it be better to use Seconds output, instead of Human Readable, in this case?

[ruflin]

The problem here is we don't know if it's going to be seconds, milli seconds or minutes as it depends on the system ingesting data. I would expect Kibana to automatically pick the right "scale" like Human Readable" does but output it more like what Seconds` does.

[wylieconlon]

Closing as a duplicate of #11706