There still seems to be a problem with processes not getting reaped when calculating sizes. The combination of Benchmark::Thread::Size and forks becomes something akin to a fork bomb. Preliminary size test shows this:

$ perl5.8.2-unthreaded -Mforks -MBenchmark::Thread::Size=times,1
(ref)  1 100
  #   (ref)                                                           
+ 
  0    3364    
  1    2836    
  2    2800    
  5    2800    
 10    2800    
 20    2800    
 50    2800    
100    2804
[download]

but I'm starting to have doubts whether the size calculation is correct. I don't have time to look into it further right now...

This test was done with my internal development versions of forks and Benchmark::Thread::Size. Don't try this at home with the release versions yet!

Liz