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
