Jason Tedor ecce53f0df Add I/O statistics on Linux
This commit adds a variety of real disk metrics for the block devices
that back Elasticsearch data paths. A collection of statistics are read
from /proc/diskstats and are used to report the raw metrics for
operations and read/write bytes.

Relates #15915
2016-05-17 16:16:39 -04:00
..
2016-05-17 16:16:39 -04:00