Re: thousands of threads & kernel continuations

David Williams (
Sun, 27 Apr 1997 20:57:22 +0100

In message <>,
Michael Callahan <> writes
>I agree with what Alan, David and others have said about 1000s of threads
>being the wrong answer to the question--essentially no matter what the
>question is. (This is assuming you don't have a machine with 1000s of
Exactly - If you only have 5 CPUs you can only ever have 5 threads
actively run on CPUs at the same time. Perhaps a few more to handle
disk I/O, one if you use Kernel Asyncchronous I/O and a few to handle
network actively, Informix RBBMS recommond one per 200-300 users i.e.

Why have more??

David Williams