Benchmark: timing 10 iterations of berkeley write, file write...
berkeley write: 132 wallclock secs (32.46 usr + 20.78 sys = 53.24 CPU) @  0.19/s
 (n=10)
file write: 61 wallclock secs (24.18 usr + 12.72 sys = 36.90 CPU) @  0.27/s (n=1
0)
               s/iter berkeley write     file write
berkeley write   5.32             --           -31%
file write       3.69            44%             --
Benchmark: timing 10 iterations of berkeley read, file read...
berkeley read: 179 wallclock secs (11.48 usr +  7.47 sys = 18.95 CPU) @  0.53/s 
(n=10)
 file read: 225 wallclock secs ( 7.72 usr +  6.81 sys = 14.53 CPU) @  0.69/s (n=
10)
              s/iter berkeley read     file read
berkeley read   1.89            --          -23%
file read       1.45           30%            --