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From "Alexey Petrenko (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (HARMONY-3744) [classlib][luni][performance] performance improvement for java.lang.Character class (toUpperCase, toLowerCase, getType)
Date Wed, 25 Apr 2007 09:57:15 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-3744?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Alexey Petrenko reassigned HARMONY-3744:
----------------------------------------

    Assignee: Alexey Petrenko

> [classlib][luni][performance] performance improvement for java.lang.Character class (toUpperCase,
toLowerCase, getType)
> -----------------------------------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-3744
>                 URL: https://issues.apache.org/jira/browse/HARMONY-3744
>             Project: Harmony
>          Issue Type: Improvement
>          Components: Classlib
>            Reporter: Vladimir Strigun
>         Assigned To: Alexey Petrenko
>         Attachments: Harmony-3744.diff
>
>
> Frequently used values in getType, toUpperCase and toLowerŠ”ase methods were cached.
First 1000 values for every method were cached as static arrays. The patch was verified with
unit tests and all benchmarks. I have 5-7% speedup for Dacapo.jython benchmark without degradation
on other scenarios.

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