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Improving mod_perl Driven Site's Performance -- Part III: Code Profiling and Memory Measurement Techniques Page 6


  % perl -MO=Terse -e 'my %hash' | wc -l
  -e syntax OK
      4

  % perl -MO=Terse -e 'my %hash = ()' | wc -l
  -e syntax OK
     10

The first one has less opcodes.

Note that you shouldn't use Apache::Status module on production server as it adds quite a bit of overhead for each request.

References

This article was originally published on Jan 1, 2001
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