The underlying JNI library understands the following system properties:

• dc.jni.debug: If set, additional debugging messages are logged for every command and every metric value received. The value of this property consists of a series of tokens separated by commas. The possible tokens are understood:
  • all: turn on all debugging options.
  • event: log the reception of events.
  • exception: log the generation of exceptions.
  Every token except all can be prefixed with "no" to prohibit the corresponding messages.