FBSD Network perf regarding 9.1 and -current-r249330

Lab detail (hardware and configuration): http://bsdrp.net/documentation/examples/ibm_eserver_306m_with_intel_82546gb

All result are number of Kpps (test done with netmap pkt-gen) measured on the receiver.

root@orange:~/bench # ministat forwarding-9.1 forwarding-current-r249330
x forwarding-9.1
+ forwarding-current-r249330
+-------------------------------------------------------------------------------------------+
|     x                                                            +                        |
| x   xx              x                           +       +        +                       +|
||____M__A______|                                  |_______________A______________|         |
+-------------------------------------------------------------------------------------------+
    N           Min           Max        Median           Avg        Stddev
x   5        404.98        406.25        405.23        405.39     0.4948232
+   5        408.08        410.79        409.23       409.202     1.0096385
Difference at 95.0% confidence
        3.812 +/- 1.15954
        0.940329% +/- 0.286031%
        (Student's t, pooled s = 0.795053)

root@orange:~/bench # ministat ipfw-9.1 ipfw-current-r249330
x ipfw-9.1
+ ipfw-current-r249330
+-------------------------------------------------------------------------------------------+
|   +                                                                                       |
|   +                                                                                  x    |
|+ ++                                                                                  x xxx|
| |AM                                                                                  |_A_||
+-------------------------------------------------------------------------------------------+
    N           Min           Max        Median           Avg        Stddev
x   5        320.13        320.79        320.52        320.45    0.28644371
+   5        307.45        307.89        307.83        307.76    0.17635192
Difference at 95.0% confidence
        -12.69 +/- 0.346898
        -3.96006% +/- 0.108253%
        (Student's t, pooled s = 0.237855

root@orange:~/bench # ministat pf-9.1 pf-current-r249330
x pf-9.1
+ pf-current-r249330
+-------------------------------------------------------------------------------------------+
|++++ +                                                                           x     xx x|
||_A_|                                                                            |___A_M_| |
+-------------------------------------------------------------------------------------------+
    N           Min           Max        Median           Avg        Stddev
x   5         272.4        275.65        274.51        273.98     1.4337538
+   5        243.05        244.78         243.7       243.804    0.69873457
Difference at 95.0% confidence
        -30.176 +/- 1.64484
        -11.0139% +/- 0.600349%
        (Student's t, pooled s = 1.1278)