Sane Number of Threads

[Dustin Norlander]

Wondering how big to make the I/O threadpool.  I am currently using an
Execution handler so my code should all be executed in a separate
thread, just wondering how many threads to assign to the IO pool?

Seems with asynch i/o the number of io threads should be very small
since it should not ever block, is this correct?  any reason to ever
assign more threads then the # of cores?

thanks for any advice,
Dustin