Re: FIFO blocking behaviour

[Mouse <mouse%Rodents-Montreal.ORG@localhost>]

> Is it defined that writing to a fifo will block until someone has
> read the data from the other end?

No, or at least, I doubt it because NetBSD's implementation doesn't
work that way.

Shell 1:

$ mknod p p
$ (sleep 10; cat) < p

Shell 2 (run a second or two after starting the last command above)

$ echo foo > p

My experience is that the echo will complete fast, finishing multiple
seconds before the cat even starts.  I see this on 9.1, 5.2, and 1.4T,
and would expect to see it approximately everywhere with FIFOs, NetBSD
or not.

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