sensu/sensu-community-plugins — pull request #118 by skymob (2012-12-13 20:14:07+00:00)
Title: IOStat Extended Metrics plugin

Iostat Extended Metrics plugin gathers data from `iostat -x` and
outputs the following metrics in Graphite format:

* rrqms: The number of read requests merged per second that were queued to the device.
* wrqms: The number of write requests merged per second that were queued to the device.
* rs: The number of read requests that were issued to the device per second.
* ws: The number of write requests that were issued to the device per second.
* rsec_s: The number of sectors read from the device per second.
* wsec_s: The number of sectors written to the device per second.
* avgrq_sz: The average size (in sectors) of the requests that were issued to the device.
* avgqu_sz: The average queue length of the requests that were issued to the device.
* await: The average time (in milliseconds) for I/O requests issued to the device to be served. This includes the time spent by the requests in queue and the time spent servicing them.
* svctm: The average service time (in milliseconds) for I/O requests that were issued to the device. Warning! Do not trust this field any more. This field will be removed in a future sysstat version.
* percent_util: Percentage of CPU time during which I/O requests were issued to the device (bandwidth utilization for the device). Device saturation occurs when this value is close to 100%.