title: Measure disk write/read speed using java
body: <p>How to measure  write/read disc speed using java, i know about SIGAR library, but i can't found such methods  in there. Maybe someone know solution?</p>
  
  <p>The problem is that I need to determine at what rate currently is writing to disk, and at what speed is being read. Furthermore, ideally, the data must be obtained for specific directories. But if you tell me at least how to define the entire disk would be very grateful.</p>