On Sat, 2014-05-03 at 03:28 +0800, Steve wrote: > Tested 0.3.4 but $STATS_BYTES_IN $STATS_BYTES_OUT still report 0 0 in > shell script, any idea? How did the client terminate? The worker process returns the statistics to main prior to exiting, so there could be some timing issue that is not visible here. Could you provide more information about your system and use-case? regards, Nikos