http://bugs.winehq.org/show_bug.cgi?id=11364
--- Comment #7 from Lei Zhang thestig@google.com 2008-03-18 00:41:17 --- Artem, rather than throwing a fit when someone disagrees with you, why not try to be more helpful and provide more useful info on this bug. How are you testing multithreading mode? Are you creating a rar file or extracting one? Are you using the command line or the GUI? What tools are you measuring CPU usage with?
I tried wine Rar.exe a -mt2 winrar.rar foo bar baz ...
where the set of files to compress is about 500 MB. The total cpu usage on my core 2 duo was around 120%, including running top, firefox, etc. I measured this by running top, and I pressed '1' to display the cpu usages separately. This was not I/O bound. The files I'm compressing are all cached in memory.