Am 16.06.2015 um 00:20 schrieb Gerardo Herzig: > Hi all. Im trying to use the "disk" metrics of the new 5.5 colletcd > version, in order to avoid the "iostat" ruby wraper. What is cool > about "iostat -x" is the "disk util%", to knowing how stressed the > disk are.
> So, it is not clear to me what maths are involved in that > calculations. Anyone knows if it is possible now with the new > disk-plugin metrics? Under Linux it should (sorry, haven't checked the code) derive from the iostats utility. From the man page: %util Percentage of elapsed 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% for devices serving requests serially. But for devices serving requests in parallel, such as RAID arrays and modern SSDs, this number does not reflect their performance limits. Peace, Shorty
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