% threads -c sleep -t 6 argfile
These commands will be done:
 1/10  sleep 1
 2/10  sleep 20
 3/10  sleep 30
 4/10  sleep 40
 5/10  sleep 10
 6/10  sleep 10
 7/10  sleep 10
 8/10  sleep 10
 9/10  sleep 10
10/10  sleep 2
Doing commands:

starting  1/10  1
now running (maxthreads is 6):
   1/10  1

starting  2/10  20
now running (maxthreads is 6):
   1/10  1
   2/10  20

starting  3/10  30
now running (maxthreads is 6):
   1/10  1
   2/10  20
   3/10  30

starting  4/10  40
now running (maxthreads is 6):
   1/10  1
   2/10  20
   3/10  30
   4/10  40

starting  5/10  10
now running (maxthreads is 6):
   1/10  1
   2/10  20
   3/10  30
   4/10  40
   5/10  10

starting  6/10  10
now running (maxthreads is 6):
   1/10  1
   2/10  20
   3/10  30
   4/10  40
   5/10  10
   6/10  10

finishing  1/10  1
now running (maxthreads is 6):
   2/10  20
   3/10  30
   4/10  40
   5/10  10
   6/10  10

starting  7/10  10
now running (maxthreads is 6):
   2/10  20
   3/10  30
   4/10  40
   5/10  10
   6/10  10
   7/10  10

finishing  6/10  10
now running (maxthreads is 6):
   2/10  20
   3/10  30
   4/10  40
   5/10  10
   7/10  10

finishing  5/10  10
now running (maxthreads is 6):
   2/10  20
   3/10  30
   4/10  40
   7/10  10

starting  8/10  10
now running (maxthreads is 6):
   2/10  20
   3/10  30
   4/10  40
   7/10  10
   8/10  10

starting  9/10  10
now running (maxthreads is 6):
   2/10  20
   3/10  30
   4/10  40
   7/10  10
   8/10  10
   9/10  10

finishing  7/10  10
now running (maxthreads is 6):
   2/10  20
   3/10  30
   4/10  40
   8/10  10
   9/10  10

starting 10/10  2
now running (maxthreads is 6):
   2/10  20
   3/10  30
   4/10  40
   8/10  10
   9/10  10
  10/10  2

finishing 10/10  2
now running (maxthreads is 6):
   2/10  20
   3/10  30
   4/10  40
   8/10  10
   9/10  10
finishing  2/10  20
finishing  8/10  10
finishing  9/10  10
finishing  3/10  30
finishing  4/10  40