[mpg123-users] Increasing CPU usage in mpg123_decode with rate conversion.

[Rune T. <ru...@in...>]

I am running this on an Freescale 8280 (PowerPC 603e type CPU) running
at 450MHz.

When I start, it takes about 4-5% CPU.
If I leave it running for about 5 minutes, it is up to 10-15%, and seems
to go up about 1-2% a minute.

One time I left it running for about 50 minutes, and it was using 95% of
the cpu. 

So a 'CPU' leak (instead of a memory leak).

By putting in sime timing code, I determoned that the time was spent in
mpg123_decode. I have not put timing at anything lower yet.

If I leave the rate at 44100, the application uses 7% CPU no matter how
long it runs.

> -----Original Message-----
> From: Thomas Orgis [mailto:tho...@or...] 
> Sent: Monday, September 14, 2009 4:09 PM
> To: mpg...@li...
> Subject: Re: [mpg123-users] Increasing CPU usage in 
> mpg123_decode with rate conversion.
> 
> Am Mon, 14 Sep 2009 12:07:00 -0500
> schrieb "Rune Torgersen" <ru...@in...>: 
> 
> > With rate conversion, my testapp starts to spend 
> progressively more time
> > in the mpg123_decode function.
> 
> Please describe "progressively". That the resampling code can 
> take more CPU time, generally, is not surprise since only the 
> native rate decoding is accerelated using assembly optimizations.
> 
> 
> Alrighty then,
> 
> Thomas.
>