[Bug 8245] WinRAR's multithreading mode doesn' t work correctly on SMP system

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=8245


Artem S. Tashkinov <t.artem at mailcity.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|CLOSED                      |UNCONFIRMED
         Resolution|DUPLICATE                   |




--- Comment #7 from Artem S. Tashkinov <t.artem at mailcity.com>  2008-01-26 08:07:40 ---
Bug #7551 is closed but I'd like to comment upon WinRAR.

In wine 0.9.54 both CPU cores are used but average CPU usage in SMP mode is
140-160%, thus WinRAR/wine doesn't fully utilize CPU resources and its
performance in SMP mode increases only %20-30 vs ~ 90% increase in speed in
Windows.

`top` stats:

Cpu0  : 73.3%us,  3.7%sy,  0.0%ni, 22.7%id,  0.0%wa,  0.3%hi,  0.0%si,  0.0%st
Cpu1  : 68.3%us,  9.0%sy,  0.0%ni, 22.7%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st

WinRar performance in Wine:

Single core: 647KB/sec
Dual   core: 764-823KB/sec (the speed changes up and down all the time)

WinRar performance in Windows XP SP2:

Single core: 660KB/sec
Dual   core: 1100KB/sec


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