[jboss-jira] [JBoss JIRA] (DROOLS-667) Profile why day.index is so much slower than day.getIndex()

[Geoffrey De Smet (JIRA)]

Geoffrey De Smet created DROOLS-667:
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             Summary: Profile why day.index is so much slower than day.getIndex()
                 Key: DROOLS-667
                 URL: https://issues.jboss.org/browse/DROOLS-667
             Project: Drools
          Issue Type: Enhancement
    Affects Versions: 6.2.0.CR3
            Reporter: Geoffrey De Smet
            Assignee: Mario Fusco


day.index is 3 times slower than day.getIndex() (and it's gets more as the dataset grows)
As discussed with Mario. Rough benchmark speeds here:
  https://gist.github.com/ge0ffrey/7662856f357dbec7f7ec


Reproduce recipe
- git clone optaplanner
- Run TravelingTournamentApp, load dataset bra24, solve it for about 30 seconds.
- Open travelingTournamentScoreRules.drl. Replace all occurrences of "day.getIndex()" with "day.index".
- Run TravelingTournamentApp again, load dataset bra24, solve it for about 30 seconds again.
- Compare the last log message of both runs: look for average calculate count per second (x). Higher is faster. For bra24, day.getIndex() is 3 times faster than day.index.






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