printf() > 65k strings

Intel X5482 Harpertown @ 3.2 GHz
L1 cache: 32k per core
L2 cache: 6 MB shared between two cores

Ubuntu 11 x64
GCC 4.6.1 x64

$ ./printf65 | pv >/dev/null
^C29GB 0:00:14 [2.01GB/s] [

$ ./printf65 | pv -B 8k >/dev/null
^C.4GB 0:00:18 [ 829MB/s] [

$./printf65 | pv -B 16k >/dev/null
^C19GB 0:00:14 [1.18GB/s] [

$ ./printf65 | pv -B 32k >/dev/null
^C.6GB 0:00:10 [2.03GB/s] [

$ ./printf65 | pv -B 80k >/dev/null
^C27GB 0:00:11 [2.46GB/s] [

$ ./printf65 | pv -B 200k >/dev/null
^C21GB 0:00:10 [2.12GB/s] [


$ ./printf70 | pv >/dev/null
^C12GB 0:00:07 [1.72GB/s] [

$ ./printf70 | pv -B 8k >/dev/null
^C03GB 0:00:10 [ 818MB/s] [

$ ./printf70 | pv -B 16k >/dev/null
^C.8GB 0:00:46 [ 1.4GB/s] [

$ ./printf70 | pv -B 32k >/dev/null
^C.2GB 0:00:23 [2.04GB/s] [

$ ./printf70 | pv -B 80k >/dev/null
^C.3GB 0:00:10 [2.31GB/s] [

$ ./printf70 | pv -B 200k >/dev/null
^C.4GB 0:00:14 [1.25GB/s] [