[Bug java/23283] Sun's JIT faster than gcc

["pinskia at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-08-08 13:32 -------
Actually for me Sun's java and GCJ take about the same at the default settings (well for GCJ compiled at 
-O3).

Now if I change Sun's java to use the server tuned JIT, Sun's java is 2 seconds while GCJ is still 4.5 or so.


timecopper:~>time ./a.out
4999358.6586720785
4.900u 0.070s 0:06.12 81.2%     0+0k 0+0io 148pf+0w
copper:~>javac X.java
java Xcopper:~>java X
5001132.020866861
copper:~>time java X
5000974.98115474
4.791u 0.037s 0:04.88 98.7%     0+0k 0+0io 0pf+0w
copper:~>time java -server X
5000248.791328681
3.290u 0.061s 0:03.91 85.6%     0+0k 0+0io 54pf+0w

This with keeping and printing out the return value for nextDouble.

This might be startup/shut down time taking into account.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Java interpreter            |Sun's JIT faster than gcc
                   |significantly faster than   |
                   |gcc?!                       |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23283