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+