[Bug classpath/44052] Performance problems with date formatting

[gnu_andrew at member dot fsf.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44052

Andrew John Hughes <gnu_andrew at member dot fsf.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED

--- Comment #3 from Andrew John Hughes <gnu_andrew at member dot fsf.org> 
2012-07-02 16:27:45 UTC ---
http://git.savannah.gnu.org/cgit/classpath.git/commit/?id=fafe5baa380e6e792ebb973e5a87199373409eb3
should fix it.

This simple test:

import java.util.Locale;
import java.text.DateFormatSymbols;

public class TestDFSPerf
{
  public static void main(String[] args)
  {
    for (int a = 0; a < 255; ++a)
      {
        new DateFormatSymbols(Locale.UK);
      }
  }
}

shows a notable increase.  With the new class:

$ time /home/andrew/build/cacao-jdk/bin/java TestDFSPerf

real    0m0.161s
user    0m0.148s
sys    0m0.012s

Using the old version taken from gcj 4.7:

$ time /home/andrew/build/cacao-jdk/bin/java -Xbootclasspath/p:tmp TestDFSPerf

real    0m4.005s
user    0m3.936s
sys    0m0.040s