weicat

I am using both the iperf 2.1.4 and 2.0.10, I can see the jitter value in the sum line of the 2.0.10, but cannot find it from iperf2.1.4 is it the designed behavior? if so, which version did it start not showing the jitter value in SUM? 2.1.4 [SUM] 0.00-311.80 sec 2035337 KBytes 53474 Kbits/sec 5292955/6805426 (78%) 2.0.10 [SUM] 0.0-40.0 sec 219420 KBytes 44949 Kbits/sec 1.491 ms 6442124857/6442287909 (1e+02%)