On Thu, Sep 14, 2017 at 10:56:14AM -0700, benravin wrote: > > I don't have any disk I/O operations, I receive data from a USB dongle at a > constant rate. > Hi! It sounds like you're writing an SDR. You might be interested in lysdr: http://gordonjcp.github.io/lysdr/ -- Gordonjcp MM0YEQ