Re: Bad MIDI performance : 10ms latency instead of the expected

[Alan Cox]

> >             if(current->need_resched())
> >                     schedule();
> >     }
> Do you think there are some benefits by inserting the re-schedule in the
> drivers/sound/mpu401.c file ? ( less CPU usage)
> 
> for (timeout = 30000; timeout > 0 && !output_ready(devc); timeout--);
> 
> But since the FIFO is only 2 bytes long = 600usecs, 
> the schedule() could cause a MIDI bandwidth decrease,
> but would keep CPU load down , right ?
> Why was the MPU401 code not tuned that way ?

Hannu tuned MPU401, Im not precisely sure how he tuned it, but it should
be sufficiently short the need_resched check isnt needed