Sat, 28 Mar 1998 12:58:06 -0800
On Fri, 27 Mar 1998, Marc A. Criley wrote:
> First I want to thank everyone who responded to my request for
> information regarding the use of a significant number of Ada tasks
> within processes. I got some good pointers, and between them and some
> pointed arguing I believe I've successfully shown that the number of
> tasks in our software in no way endangers quality or success, and
> never did.
The notion that too many tasks spoils the program is a persistent
myth. In a task based design the ideal is that every task is always
ready to do its work. One could easily conceive of design where every
task is idle most of the time so it can handle each event when it
occurs. For some reason this is counter-intuitive for some designers.
And yes, I do realize that this is something of an oversimplification
and does not, by itself, solve all of schedulability problems in a real
The design described by Marc is probably important for its contribution
to understanding how myth and reality are so different in Ada tasking.