[fedora-java] Using the natively-built Eclipse compiler

[Thomas Fitzsimmons]

On Wed, 2005-03-09 at 22:24 +0100, Ziga Mahkovec wrote:
>On Wed, 2005-03-09 at 11:38 -0500, Thomas Fitzsimmons wrote:
>> On Wed, 2005-03-09 at 15:04 +0000, Andrew Haley wrote:
>> >I see.  Of course, I have no idea why tools.jar is attempting to use
>> >the gcjlib:// class loader, or why it is so slow when it does.  It
>> >really should not explicitly use this class loader.
>> 
>> I doesn't any more.  We were doing that to avoid having to always add
>> jdtcore.jar to the classpath.  I also have no idea why it's so slow but
>> I did notice a significant performance hit when compared to interpreted
>> mode.
>> 
>> Ziga, you can get the sources for java-gcj-compat from
>> sources.redhat.com:
>
>Ah, much better, thanks.  Here are the revised times (BTW, that's a
>1.5GHz Pentium M):
>
>HelloWorld
>
>ecj                |  ecj-native         |  jikes
>-------------------------------------------------------------
>real    0m1.863s   |  real    0m1.614s   |  real    0m0.067s
>user    0m1.758s   |  user    0m1.536s   |  user    0m0.050s
>sys     0m0.103s   |  sys     0m0.076s   |  sys     0m0.012s
>
>
>GNU Classpath (cd lib; make)
>
>ecj                |  ecj-native         |  jikes
>-------------------------------------------------------------
>real    1m24.539s  |  real    0m24.552s  |  real    0m9.439s
>user    1m23.157s  |  user    0m23.047s  |  user    0m7.486s
>sys     0m1.142s   |  sys     0m1.139s   |  sys     0m0.771s
>
>

What release of eclipse-ecj are you using?  Just recently we were able
to build Eclipse with -O2 on x86.  I'm not sure if the new packages have
hit rawhide yet.

Tom