Rate   Forks Threads
Forks   67.1/s      --    -64%
Threads  189/s    181%      --

(v5.10.1, Ubuntu 8.04 (kernel 2.6.24), string length 100)


          Rate   Forks Threads
Forks   84.7/s      --    -44%
Threads  152/s     79%      --

(v5.12.0, SUSE 11.1 (kernel 2.6.27), string length 10000)