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Originally posted by rjamorim
I would believe his interest isn't disk usage, but resource consumption and loading time. In that aspect, UPX'ing can be even worse than leaving the files alone.
It was just meant as general information. The "--best" switch is only listed with "upx -h".
I did a little benchmark of UPX. I compressed the Paint Shop Pro 7.04 executable, which is a huge-as-hell 9.293.824 bytes file.
It took 1:26 to compress with "upx --best psp.exe" on my AMD Athlon XP 1700+.
It decompressed nearly instantaneously with "upx -d psp.exe". It was less than half a second or so.
So I hardly think there would be a major performance hit involved with compressing the WAC files (or any executables for that matter).
EDIT: Psp.exe compressed to 31.24% of its original size (2.904.064 bytes). Most impressive.