Re: [linux-audio-dev] Re: costs of IPC

[Steve Harris]

On Tue, May 15, 2001 at 05:20:47PM +0200, Abramo Bagnara wrote:
> > 
> > I'm a little puzzled. the "sp" case doesn't have any IPC costs or
> > context switches. How can it be consuming 12-15% of the CPU time in
> > these costs? These costs are always zero for this case, surely?
> 
> As far as I understand Steve has not plotted the difference but the two
> CPU usage %. The relative cost of mp approach is the difference between
> the two values.

Yes. When shared is 0, stack is constant, but not zero, and vica versa. So
osme work is being done.

I think a 2d graph of shared against stack against cpu use would be
telling, but it would take a really long time.

- Steve