## full hash
C:\test>\perl32\bin\perl.exe 909437-1.pl
Lock hash took 1.153 seconds

## refs my way
C:\test>\perl32\bin\perl.exe 909437-2.pl
Lock scalar ref took 3.057 seconds

## refs your way
C:\test>\perl32\bin\perl.exe 909437-3.pl
Lock scalars ref took 3.473 seconds

##</code><code>##

C:\test>909437-1
Lock hash took 1.189 seconds

C:\test>909437-2
Lock scalar ref took 3.285 seconds

C:\test>909437-3
Lock scalars ref took 3.434 seconds