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From "Regis Xu (JIRA)" <j...@apache.org>
Subject [jira] Closed: (HARMONY-6095) [classlib][luni] Performance improvement patch for java.text.DateFormatSymbols.DateFormatSymbols(Locale)
Date Fri, 16 Oct 2009 14:37:31 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-6095?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Regis Xu closed HARMONY-6095.
-----------------------------


no response, assume OK.

> [classlib][luni] Performance improvement patch for java.text.DateFormatSymbols.DateFormatSymbols(Locale)
> --------------------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-6095
>                 URL: https://issues.apache.org/jira/browse/HARMONY-6095
>             Project: Harmony
>          Issue Type: Improvement
>          Components: Classlib
>    Affects Versions: 5.0M8
>            Reporter: deven you
>            Assignee: Regis Xu
>             Fix For: 5.0M11
>
>         Attachments: DateFormatSymbolsTest.diff, hy-text.diff, hy-text_v2.diff, hy-text_v4.diff
>
>   Original Estimate: 96h
>  Remaining Estimate: 96h
>
> this constructor spend much time on getZoneString(), howerver it is rarely used in real
world application. so I just delay loading the ZoneStrings 
> the testcase is :
> import java.text.DateFormatSymbols;
> import java.util.Locale;
> public class TestDateFormatSymbols {
>     public static void main(String[] args) {
>         long time = System.currentTimeMillis();
>         DateFormatSymbols dfs = new DateFormatSymbols(Locale.getDefault());
>         time = System.currentTimeMillis() - time;
>         
>         System.out.println("the total time is " + time + " ms!");
>     }
> }
> I have test on on Intel(R) Core(TM)2 Duo Cpu 2.4GHZ, 2.98GB Memory machine, the result
is as below:
> Harmony patch before: 1125 ms
> > Harmony patched: 78 ms

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