[gmpi] Re: Decision time: 7.2
- From: Tim Hockin <thockin@xxxxxxxxxx>
- To: gmpi@xxxxxxxxxxxxx
- Date: Thu, 24 Jul 2003 06:01:31 -0700 (PDT)
> > Some plugins are necessarily copy to. Has anybody actually measured the
> > impact of always copying the buffers on performance?
>
> It's quite difficult. If you load up one plugin, it's buffers sit in the
> Processor Cache and it runs wonderfully. It's when you run 10 plugins at
> once you see the impact.
>
> (not always 10, it depends how big your cache is etc).
>
> My hunch is when plugins use memory bandwidth sparingly, you can run a
> higher number of plugins.
That is what is you'd expect. It would be interesting to show an ACTUAL
benchmark for this. Run timings with in-place and not in-place for
plugin_count = 1 to N.
Tim
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