Re: Scheduler latency

Richard Gooch (rgooch@atnf.CSIRO.AU)
Thu, 22 Jan 1998 12:19:36 +1100

Linus Torvalds writes:
> On Thu, 22 Jan 1998, Richard Gooch wrote:
> >
> > How about 2.0.33? I've got that tree on disc.
> Sure, anything later than or equal to 2.0.31 should be ok in this regard
> (obviously not the early 2.1.x series, they had the same problem).

OK, here's some results for you:

Dual PPro/180 running 2.1.79-SMP:
SCHED_OTHER class: 56 microseconds
SCHED_FIFO class: 3 microseconds

Dual PPro/180 running 2.1.79-UP:
SCHED_OTHER class: 40 microseconds
SCHED_FIFO class: 2 microseconds

Dual PPro/180 running 2.0.33-SMP:
SCHED_OTHER class: 14 microseconds
SCHED_FIFO class: 7 microseconds

Dual PPro/180 running 2.0.33-UP:
SCHED_OTHER class: 9 microseconds
SCHED_FIFO class: 4 microseconds

BTW: what news on my MTRR patch?