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in reply to Re^8: Threaded Code Not Faster Than Non-Threaded -- Why?
in thread Threaded Code Not Faster Than Non-Threaded -- Why?

I'd suggest trying the following modification:

my $thread_term   :shared = 0;
my $threads_init  :shared = 0;
my $file_read_sem : shared;                                           
+                   ### Add this

...

   WORKER: while ( !$thread_term && defined ( my $file = $work_queue->
+dequeue ) )
   {
     {                                                                
+                   ### Add this
         lock $file_read_sem;                                         
+                   ### Add this
         open my $fh, '<', $file or do { lock $d_counter; $d_counter++
+; next WORKER };

         my $data = <$fh>;

         close $fh;
      }                                                               
+                   ### Add this

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