RE: profiling multi threaded applications

If possible, design your architecture so that your threads can work in a
lockstep mode, with one central mutex controlling which thread is running at
any given moment. That way you can at least get a partial profile and
optimize each thread individually.

This type of design can also prove very useful to debug deadlocks.

Hope that helps a bit,

Christian Laforte
www.feelingsoftware.com 

> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of
> Andras Balogh
> Sent: Wednesday, July 20, 2005 10:36 AM
> To: [email protected]
> Subject: [GD-General] profiling multi threaded applications
> 
> I was about to add a simple profiler into our engine, but I've just
> realized that the usual hierarchical profiler that measures the time for
> a chunk of code won't cut it, in a multithreaded application.
> 
> I understand that even when I have a single threaded app, there are
> usually several other applications are running in the background, but
> mostly they are all idle, so it's just noise. But in this case, I would
> have multiple, heavily working threads. If the OS switches back and
> forth between these threads all the time, then how is it possible to
> make accurate, or even just usable measurements??
> 
> Thanks,
> 
> Andras
> 
> 
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