Re: CVS commit: src/sys

[Joerg Sonnenberger <joerg%bec.de@localhost>]

On Thu, Apr 09, 2020 at 09:52:37PM +0900, Tetsuya Isaki wrote:
> At Fri, 3 Apr 2020 17:51:21 +0200,
> Joerg Sonnenberger wrote:
> > It seems perfectly
> > sensible to me that the final output device can provide a lower limit as
> > well as having one derived from HZ and using whatever is higher.
> 
> Sorry, I could not translate well and I didn't understand.
> Could you write that in another way?

There are two possible reasons for a lower limit for the buffer size:
(1) The device requires a certain amount.
(2) The system wants to ensure the interrupt rate doesn't go over a
certain rate.

The real value shouldn't be a constant, but the maximum of the two?

Joerg