------- Additional Comments From mark at klomp dot org 2005-08-23 14:31 -------
Subject: Re: Sun's JIT faster than gcc for
Random.nextDouble
It looks like the problem is that we don't remove the synchronization
for nextDouble() even though the test case is single-threaded.
qprof: /tmp/x: 299 samples, 299 counts
X::main(JArray<java::lang::String*>*):X.java:8 5 ( 2%)
libc.so.6(memchr) 1 ( 0%)
libgcj.so.6 2 ( 1%)
libgcj.so.6(_Jv_MonitorEnter) 110 ( 37%)
libgcj.so.6(_Jv_MonitorExit) 108 ( 36%)
libgcj.so.6(_ZN4java4util6Random4nextEi) 27 ( 9%)
libgcj.so.6(_ZN4java4util6Random10nextDoubleEv) 46 ( 15%)
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23283
