Thread pooling in AIO?

[Nord, James]

> > I think a fixed pool is probably the wrong choice for async 
> I/O - it 
> > would make more sense to use a cached pool which can scale up on 
> > demand, with a sensible timeout for non-core threads.
> If the server is completely event driven then a fixed thread 
> pool can work very well.
> 
> One word of warning is one needs to be careful to avoid idle 
> timeout/keep alive on Windows due to the way that I/O works 
> on that platform. I/O operations are tied in the kernel to 
> the initiating thread; if a thread terminates (because it is 
> idle) then outstanding I/O operations that it has initiated 
> may be aborted.


So your using AlertableIO[1] and not IOCompletion[2] ports then?
Doesn't this have inherant scalability issues as you can only proccess
on the same thread?
It also means you can have some intersting thread management issues...

[1]http://msdn.microsoft.com/en-us/library/aa363772(VS.85).aspx
[2]http://msdn.microsoft.com/en-us/library/aa365198(VS.85).aspx

Regards,

	/James

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