Re: [2.4.17/18pre] VM and swap - it's really unusable

yodaiken
2002-01-15T01:02:52Z

On Mon, Jan 14, 2002 at 03:21:14PM -0800, george anzinger wrote:
> > > How is that changed? AFAIK inserting more schedule points does not
> > > change the behaviour of the scheduler. The niced app will still get its
> > > time.
> >
> > How many times can an app be preempted? In a non preempt kernel
> > is can be preempted during user mode at timer frequency and no more
>
> Uh, it can be and is preempted in user mode by ANY interrupt, be it
> keyboard, serial, lan, disc, etc. The kernel looks for need_resched at
> the end of ALL interrupts, not just the timer interrupt.

Ouch.