RE: profiling multi threaded applications

Well if that's the case, just implement a simple Critical Section around
the main loop of each thread, with a Sleep, and turn it only on in
profile 

> -----Original Message-----
> From: [email protected] 
> [mailto:[email protected]] On 
> Behalf Of Andras Balogh
> Sent: Wednesday, July 20, 2005 2:33 PM
> To: [email protected]
> Subject: Re: [GD-General] profiling multi threaded applications
> 
> I don't have anything against lockstep mode, if it's 
> automagically forced only during profiling, but I don't want 
> to design the app to work that way during normal operation. 
> The reason is that if these steps are not fine enough, it 
> could hurt interactivity, which I can live with while 
> profiling, but cannot accept in "final" mode.
> 
> 
> brian sharon wrote:
> > Andras, are all of your threads doing the same thing? Otherwise, a 
> > critical section won't do anything for you. If only one 
> thread tries 
> > to acquire the object, it will (trivially) always get it.
> > 
> > Now, if you're thinking going to put this critical section 
> at the top 
> > level of your app and make all threads go through it, then 
> you're back 
> > to Christian's suggestion:
> > 
> > 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.
> > 
> > --brian
> > 
> 
> 
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