I also noticed that changing the control rate also makes
a great deal of difference.

Victor
----- Original Message ----- 
From: "Art Hunkins" 
To: 
Sent: Tuesday, January 13, 2009 3:40 AM
Subject: [Csnd] SR and CPU Usage on the OLPC?


> Does anyone have an explanation for the following bizarre (but verified) 
> data regarding SR's and CPU usage on the OLPC? My test .csd is with 
> ksmps=10, realtime, with MIDI input.
>
> SR=44100: Csound CPU usage = 26%, total CPU usage = 54%
> (SR=48000: 32% and 52%)
> SR=36000: 4% and 6%
> SR=32000: 3% and 5%
> SR=22050: <3% and 4%
>
> All conditions, to my knowledge, except for SR, were identical.
>
> It makes no sense to me, but the difference is real. I'll be using 
> SR=32000 or 36000 instead of 44100.
>
> Whatever the reason, I'll now be able to port *some* of what I'd hoped to 
> the OLPC.
>
> Art Hunkins
>
>
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