Mail Folder Analyzer Revisited

• We couldn't get any improvement from letter_histogram

     %Time ExclSec CumulS #Calls sec/call Csec/c  Name
      63.7   0.830  0.829    109   0.0076 0.0076  main::letter_histogram
      13.8   0.180  0.180      1   0.1800 0.1800  Mail::Util::read_mbox
      4.61   0.060  0.130      3   0.0200 0.0432  main::BEGIN
      4.61   0.060  0.887    109   0.0005 0.0081  main::handle_message

• Maybe look into read_mbox now?

• No.

• The profiler is telling us something extremely important here:

  • Trying to speed up the program any more would be a waste of effort

• The next biggest target is Mail::Util::read_mbox

  • But a 20% speedup here would only get us a 2.8 % overall speedup

  • That's a total of about 36 milliseconds per run

  • Would it really be worth the trouble?

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Copyright © 2003 M. J. Dominus