I upgraded to libgcj-4.0.0-0.32 and eclipse-ecj-3.1.0_fc-0.M5.12.
The results for compiling classpath:
ecj | ecj-native | jikes
-------------------------------------------------------------
real 1m31.786s | real 0m16.207s | real 0m8.423s
user 1m22.796s | user 0m14.925s | user 0m7.052s
sys 0m1.369s | sys 0m1.020s | sys 0m0.755s
(ecj-native went from 24.5s to 16.2s as a result of -O2)
I also uploaded oprofiles for ecj[1], ecj-native[2] and ecj-native-with-
the-old-gcjlib-tools-jar[3].
Note that I'm running a Centrino so the oprofile driver falls back to
timer interrupt mode.
[1]
http://www.bootchart.org/misc/ecj/M5.12/opreport.ecj.log
[2]
http://www.bootchart.org/misc/ecj/M5.12/opreport.ecj-native.log
[3]
http://www.bootchart.org/misc/ecj/M5.12/opreport.ecj-native-gcjlib.log
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Ziga