[ 0:35:30.57] c:\test>t-head-urls -THREADS=4 urls.list
Processed 2040 urls
Took 424.354000 with 4 threads

c:\test>t-head-urls -THREADS=8 urls.list
Processed 2040 urls
Took 215.305000 with 8 threads

c:\test>t-head-urls -THREADS=16 urls.list
Processed 2040 urls
Took 123.232000 with 16 threads

c:\test>t-head-urls -THREADS=32 urls.list
Processed 2040 urls
Took 90.033000 with 32 threads

c:\test>t-head-urls -THREADS=64 urls.list
Processed 2040 urls
Took 88.804000 with 64 threads