------- Comment #4 from t dot artem at mailcity dot com 2009-04-18 01:44 ------- Test configuration:
Software: Linux kernel 2.6.28.9 x86, GCC 4.2.4, GCC 4.4.0 RC, http://www.rarlab.com/rar/unrarsrc-3.8.5.tar.gz Hardware: AMD64 Dual Core CPU 5600, 1MB x 2 level 2 cache RAM: DDR2 800MHz 4GB unrarsrc-3.8.5.tar.gz compiled binary (compilation flags: -march=pentium2 -O2 -ftree-vectorize): GCC 4.2.4: 180492 bytes GCC 4.4.0: 196288 bytes Uncompressing 1GB archive (several hundreds WAV files): time rar-4.2.4 t -inul archive.rar real 1m18.413s user 1m17.758s sys 0m0.580s time rar-4.4.0 t -inul archive.rar real 1m28.021s user 1m27.344s sys 0m0.627s (average results for five runs - disk IO has zero effect, since file resides on RAM disk). Summary: 4.4.x binary is 9% larger and produces code which runs 14% slower. -- t dot artem at mailcity dot com changed: What |Removed |Added ---------------------------------------------------------------------------- Severity|minor |major Status|RESOLVED |UNCONFIRMED Known to fail| |4.4.0 4.3.3 Known to work| |4.2.4 Resolution|WONTFIX | Summary|[POSSIBLY NOT A BUG] GCC |GCC 4.4.x vs. 4.2.x |4.3.0 vs. 4.2.3 observations|performance regression Version|4.3.0 |4.4.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35671
