Performance issues with Wine application

[Eric Pouech]

Ewert, Mark a écrit :
> Hi All,
> 
>  
> 
> I have a simulation tool that runs under windows NT/2K directly from the
> DOS command shell. When running it on a Windows machine I get 200
> cycle/s. When running it on Linux via Wine I get ~10 cycle/s. I didn't
> realize Wine would have such a negative performance impact. Is there any
> way to trace where the performance bottleneck is? 
there was, long ago, a wine specific tool to trace performance issue 
(cprof). But I don't know if someone actually maintained it. Basically, 
at that time it was needed to have a dedicated tool because 1/ wine is 
multithreaded, 2/ wine plays some tricks in scheduling/synchronization 
issues. However, if you have NTPL installed, there is some info 
available to use gprof (the standard GNU profiler) in multi-threaded 
environment. So gprof may work (but I'm not sure someone actually tried it).
 > I actually don't have
> access to the source of the simulation tool, so any optimizations would
> have to be done directly in Wine. I should also mention that to get this
> application to work with Wine I had to copy over the Microsoft visual
> c++ dll: msvcp60.dll. Would this somehow be impacting the execution
> performance?
Hard to tell. But since, we haven't really started the performance 
improvment phase, it's hard to give a precise answer on that.

> By the way, I'm not sure if this is the right mail list for discussing
> performance issues. I tried the end user mail list but did not get a
> response from anyone.  
it's the right one, especially if you're ready for some experiments
A+