the Nodes Stats API in 0.19.x contains a lot of useful info, but I am still
missing something. If I read it correctly it can tell us how much of the
data has gone through transport layer (node / transport) and how much data
has been read or written to the disk (node / fs / data) but it does not
tell me how fast it has been able to do it.
In other words, I would love to see ES to be able to tell if underlying
network and general IO interface is fast enough to support fast search
responses. Is that possible?