public void run() {
					try {
						sendCurrentState();
					} catch (RuntimeException e) {
						cancel();
						LOGGER.error("Error while sending current state:" + e.getMessage());
						LOGGER.debug("The error detail is", e);
					}
				}
Get current System performance.

@return {@link SystemDataModel} instance
ngrinder-core/src/main/java/net/grinder/AgentController.java