$ ~/perl/recycleshare3
perl: 5.10.0
gcc: 4.3.2
threads: 1.67
threads::shared: 1.14
1$VAR1 = {
          'a' => {},
          'b' => {}
        };
2$VAR1 = {
          'a' => {},
          'b' => {}
        };
$ ~/perl/recycleshare3
perl: 5.10.0
gcc: 4.3.2
threads: 1.67
threads::shared: 1.14
2$VAR1 = {
          'a' => {}
        };
1$VAR1 = {
          'a' => {},
          'b' => {},
          'a' => {},
          'b' => {}
        };