Again, milage may very.  Yadda yadda yadda.
This machine is generally slow so don't be too
concerned if you see less-than-average results, in all
cases.

Judging from these results, performance gains are more noticable
with larger buflens (the more clusters we need, the more we notice
increased performance).

euclid1 == -CURRENT with old malloc()'d counters for everything
euclid2 == -CURRENT with ref2cnt() -STABLE-style counters for clusters

All in KB/sec

ttcp standard (TCP):

(loopback, transmit)
euclid1  |  euclid2  ||  avg. euclid 1 || avg. euclid 2 || euclid2 > euclid1
-----------------------------------------------------------------------------
24742.07 |  23711.70 ||                ||               ||
21650.11 |  23023.33 ||   22619.652    ||   22948.265   ||   + 1.45%
22465.75 |  22538.93 ||                ||               ||
21620.68 |  22519.10 ||                ||               ||

(loopback, receive)
euclid1  |  euclid2  ||  avg. euclid 1 || avg. euclid 2 || euclid2 > euclid1
-----------------------------------------------------------------------------
24618.82 |  23635.89 ||                ||               ||
21591.79 |  22948.80 ||   22543.952    ||   22881.757   ||   + 1.498%
22399.10 |  22473.08 ||                ||               ||
21566.10 |  22469.26 ||                ||               ||


ttcp standard (UDP):

(loopback, transmit)
euclid1  |  euclid2  ||  avg. euclid 1 || avg. euclid 2 || euclid2 > euclid1
-----------------------------------------------------------------------------
20600.72 |  21187.04 ||                ||               ||
20754.56 |  22624.18 ||   20795.197    ||   21607.218   ||   + 3.90%
21105.84 |  21550.24 ||                ||               ||
20719.67 |  21067.41 ||                ||               ||

(loopback, receive)
euclid1  |  euclid2  ||  avg. euclid 1 || avg. euclid 2 || euclid2 > euclid1
-----------------------------------------------------------------------------
20565.58 |  21212.99 ||                ||               ||
19349.09 |  18145.64 ||   20262.463    ||   19912.33    ||   - 1.72%
20400.21 |  19228.06 ||                ||               ||
20734.97 |  21062.63 ||                ||               ||


ttcp: -l 16384 (TCP):

(loopback, transmit)
euclid1  |  euclid2  ||  avg. euclid 1 || avg. euclid 2 || euclid2 > euclid1
-----------------------------------------------------------------------------
23075.86 |  24422.29 ||                ||               ||
24455.72 |  27490.21 ||   23688.382    ||   26328.895   ||   + 11.15%
23813.69 |  26077.65 ||                ||               ||
23408.26 |  27325.43 ||                ||               ||

(loopback, receive)
euclid1  |  euclid2  ||  avg. euclid 1 || avg. euclid 2 || euclid2 > euclid1
-----------------------------------------------------------------------------
23047.60 |  24392.97 ||                ||               ||
24419.42 |  27441.98 ||   23656.862    ||   26290.457   ||   + 11.13%
23776.16 |  26042.04 ||                ||               ||
23384.27 |  27284.84 ||                ||               ||


ttcp: -l 32768 (TCP):

(loopback, transmit)
euclid1  | euclid2   ||  avg. euclid 1 || avg. euclid 2 || euclid2 > euclid1
----------------------------------------------------------------------------
26293.99 |  29346.79 ||                ||               ||
27257.33 |  29235.86 ||  26802.53      ||   28764.935   ||   + 7.32%
27957.88 |  28192.28 ||                ||               ||
25700.92 |  28284.81 ||                ||               ||

(loopback, receive)
euclid1  | euclid2   ||  avg. euclid 1 || avg. euclid 2 || euclid2 > euclid1
----------------------------------------------------------------------------
26278.77 |  29322.35 ||                ||               ||
27224.83 |  29207.49 ||  26776.585     ||   28738.85    ||   + 7.33%
27929.27 |  28166.53 ||                ||               ||
25673.47 |  28259.03 ||                ||               ||