netperf-2.5 TCP_STREAM test was run over 3 reboot iterations, with each iteration having 1 warm up run and 10 recorded netperf runs.
As we can see, the median of boths IPv6 runs is close to equal. However the range of the data and the interquartile range (IQR) on loopback is extremly high.
x hydra1/test_netperf_tcp6_default.stat + hydra1/test_netperf_tcp6_nooffload.stat +--------------------------------------------------------------------------+ | + | | x x + + | | + xx x x + + + | |x x + **+x +++xx+ +*x+*+**xx + + x xx x* x + *+ ++ x x x| | |_________________M_A___________________| | | |_______________M_A__________________| | +--------------------------------------------------------------------------+ N Min Max Median Avg Stddev x 30 4105.23 6099.56 4914.33 4971.6027 551.08148 + 30 4295.29 5789.85 4979.33 5040.9523 508.45581 No difference proven at 95.0% confidence
Given IPv6 offload support has not yet been implemented, and given we have seen in the previous section that there was no real difference, we will only compare IPv4 with and without offloading, to IPv6 default.
As expected IPv4 and IPv6 without offload differ. Once again IPv4 without offloading turned on is doing better than IPv6.
x hydra1/test_netperf_tcp6_nooffload.stat + hydra1/test_netperf_tcp4_nooffload.stat * hydra1/test_netperf_tcp6_default.stat % hydra1/test_netperf_tcp4_default.stat +--------------------------------------------------------------------------+ | * * xx + x++ % % | | ** x * **xx* *+*+ + +x++ + %%% %%% % % | |* **** x** ****** x ***+ ***x+*+*+* +%%%@ %@@% %%% %%%%% % % % %| | |_______MA________| | | |______A_____| | | |_______MA_________| | | |_____M_A________| | +--------------------------------------------------------------------------+ N Min Max Median Avg Stddev x 30 4295.29 5789.85 4979.33 5040.9523 508.45581 + 30 5106.56 6652.14 5853.92 5817.592 366.75431 Difference at 95.0% confidence 776.64 +/- 229.15 15.4066% +/- 4.54577% (Student's t, pooled s = 443.304) * 30 4105.23 6099.56 4914.33 4971.6027 551.08148 No difference proven at 95.0% confidence % 30 6265.38 8191.13 6726.55 6875.803 476.59095 Difference at 95.0% confidence 1834.85 +/- 254.725 36.3989% +/- 5.05312% (Student's t, pooled s = 492.781)