Re: [RFC] Scheduler issue 1, RT tasks ...

Victor Yodaiken
2001-12-28T00:13:03Z

On Thu, Dec 27, 2001 at 09:41:33AM -0800, Davide Libenzi wrote:
> > No: we've measured. The time in our system, which does not follow any
> > Linux kernel paths, is dominated by motherboard bus delays.
>
> 17us of bus delay ?!
> UP or SMP ?
> Under which kind of bus load ?

Try
cli
read cycle timer
inb from some isa port
read cycle timer
repeat for a while
sti
print worst case and weep