# Windows ( Cygwin Perl v5.22.3 )

$ perl foo1.pl | wc -l      # Foo::Inbox
duration:  1.825 seconds
   50000

$ perl inbox.pl | wc -l     # MCE::Inbox w/ blocking capability
duration:  2.059 seconds
   50000

$ perl foo2.pl | wc -l      # MCE::Shared->queue
duration:  2.387 seconds
   50000

$ perl foo4.pl | wc -l      # Thread::Queue
duration: 24.086 seconds
   50000


# Windows ( Strawberry Perl v5.22.2.1 )

$ perl foo1.pl > nul        # Foo::Inbox
duration:  1.570 seconds

$ perl inbox.pl > nul       # MCE::Inbox w/ blocking capability
duration:  1.664 seconds

$ perl foo2.pl > nul        # MCE::Shared->queue
duration:  2.120 seconds

$ perl foo4.pl > nul        # Thread::Queue
duration:  2.886 seconds