James Antill wrote:
...
> >                                                                    The
> > time went from 3.7 to 4.4 seconds per 100000.
> 
>  Ok here's a quick test that I've done. This passes data between 2
> processes. Obviously you can't compare this to your code or Michael's,
> however...

I've attached my version of his code with your suggested change. 
Possibly I didn't do it correctly.

>  The results with USE_DOUBLE_POLL on are...
> 
> % time ./pingpong
> ./pingpong  0.15s user 0.89s system 48% cpu 2.147 total
> % time ./pingpong
> ./pingpong  0.19s user 0.91s system 45% cpu 2.422 total
> % time ./pingpong
> ./pingpong  0.10s user 1.02s system 49% cpu 2.282 total
> 
>  The results with USE_DOUBLE_POLL off are...
> 
> % time ./pingpong
> ./pingpong  0.24s user 1.07s system 50% cpu 2.614 total
...

sdw
-- 
sdw@lig.net  http://sdw.st
Stephen D. Williams
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Dec2000