[PD] help making sense of [readsf~]

[Christof Ressi]

On 07.03.2024 01:33, Alexandre Torres Porres wrote:

> Em qua., 6 de mar. de 2024 às 21:27, Alexandre Torres Porres 
> <porres at gmail.com> escreveu:
>
>     I got this rather old 2013 macbook air, and using it with a delay
>     of only 5ms doesn't give me any noticeable dropout!
>
As I said, you likely don't notice it if the file is (still) cached by 
the OS. You need to test with files that aren't cached! On Windows you 
can manually clear the file cache (https://stackoverflow.com/a/9649439), 
but I don't know about macOS.
>
> btw, 4ms chokes and causes dropouts when testing audio with the 
> audio-mid test patch, just playing a sine wave...

That's a problem with the scheduler. With my scheduler fixes, you should 
be able to go lower: https://github.com/pure-data/pure-data/pull/1756

But again, you should really test with uncached files and/or with a 
fairly high CPU load.

Christof
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