Re: [PATCH] 2.5.72-mm3 O(1) interactivity enhancements

[Con Kolivas <kernel@kolivas.org>]

On Tue, 24 Jun 2003 04:54, Felipe Alfaro Solana wrote:
> On Mon, 2003-06-23 at 16:15, Con Kolivas wrote:
> > For those who aren't familiar, you've utilised the secret desktop weapon:
> >
> > +		if (!(p->time_slice % MIN_TIMESLICE) &&
> >
> > This is not how Ingo intended it. This is my desktop bastardising of the
> > patch. It was originally about 50ms (timeslice granularity). This changes
> > it to 10ms which means all running tasks round robin every 10ms - this is
> > what I use in -ck and is great for a desktop but most probably of
> > detriment elsewhere. Having said that, it does nice things to desktops
> > :-)
>
> I lost the track to Ingo's patch sometime ago, so I borrowed it from
> your latest patchset ;-) It does really nice things on desktops. It
> brings 2.5 to a new life on my 700Mhz laptop.
>
> What impact would have increasing MIN_TIMESLICE from 10 to, let's say,
> 50?

It stops being helpful :) 50 was the default Ingo used but this was far too 
long for say X to be waiting just to get to move the mouse again - this is 
why the mouse movement is so much less jerky with this set to 10.

Con