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gcc3.4.0/gcc3.3.2/icc8.0 compile-time performance comparison on MICOSL3's sources.

Hello,

I have just tested speed of compilation with three compilers from subject
on our internal MICO SL3 project sources -- basically MICO 2.3.11 with 26
C++ files added in orb/security directory. I have tested only compilation
of orb directory and its subdirectories, since IMHO this is quite
representative for whole MICO. The meassurement was done for our typical
developer build with SL3 and debug enabled. Options used were:

gcc: -I../include  -g  -Wall   -DPIC -fPIC  -c
icc: -no-gcc  -I../include  -g -O0  -tpp5   -DPIC -fPIC  -c

And the results are:

GCC 3.3.2

compiling orb directory with SL3 and debug:

real    29m8.449s
user    26m33.422s
sys     0m41.415s

linking libmico2.3.11.so:

real    2m13.495s
user    1m12.101s
sys     0m2.885s

libmico2.3.11.so's size:

$ ls -l libmico2.3.11.so
-r-xr-xr-x    1 karel    karel    59923611 Apr 20 11:20 libmico2.3.11.so
$



GCC 3.4.0 20040415 (prerelease)

compiling orb directory with SL3 and debug:

real    21m45.883s
user    19m56.869s
sys     0m54.734s

linking libmico2.3.11.so:

real    0m19.476s
user    0m14.642s
sys     0m1.323s

libmico2.3.11.so's size:

$ ls -l libmico2.3.11.so
-r-xr-xr-x    1 karel    karel    48265577 Apr 19 15:43 libmico2.3.11.so
$


ICC 8.0

compiling orb directory with SL3 and debug:

real    13m28.008s
user    11m36.436s
sys     1m16.516s

linking libmico2.3.11.so:

real    0m19.558s
user    0m17.637s
sys     0m1.224s

libmico2.3.11.so's size:

$ ls -l libmico2.3.11.so
-r-xr-xr-x    1 karel    karel    41607491 Apr 19 16:00 libmico2.3.11.so
$


As you can see, GCC 3.4.0 is much faster than GCC 3.3.2 and so please
allow me to thank to all gcc's developers/testers who were working hard to
make 3.4.0 faster than previous release. IMHO this is really great
progress! Also I'm very pleased to see that not only 3.4.0 is faster but
also generates *.o files which are faster to link and assuming all debug
information is ok generated by 3.4.0 also resulting debug library is much
smaller.

Thanks you all!

Karel
--
Karel Gardas                  kgardas@objectsecurity.com
ObjectSecurity Ltd.           http://www.objectsecurity.com
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