Compile time performance in C++ (question).

["Alexander Rozenman" <shure at sd dot co dot il>]

Hello gcc team !
I have a question about new gcc 3.0 release.

I compiled gcc 3.0 on sparc-10 solaris 2.6, now
when I try to compile some cpp files (many classes, STL)
it takes a lot of time (gcc 2.95.2 was much faster).

There are results of benchmarking for standard "Hello World"
c++ program (include iostream, cout <<, return):

with gcc.2.95.5
> time gcc -c hw.cpp
>> 0.20u 0.06s 0:00.31 90.3%

with gcc.3.0
> time ~/gcc-3.0/bin/gcc -c hw.cpp
>> 4.54u 0.15s 0:04.70 99.7%

All files are located in local machine, no
network problem ... 1/2 second and 4 seconds ....
(8-times (800%) regression !). 

It is very bad performance. Most probably,
my build of gcc3.0 is wrong. 

My configuration parameters are: 
configure --exec-prefix="..."
and gcc.2.95.2 was used for building of gcc 3.0.

I hope that it is my mistake .... Please help ....