cvs commit: src/sys/kern sched_ule.c

[Ben Kaduk]

On 9/30/07, Jeff Roberson <jroberson at chesapeake.net> wrote:
> On Sat, 29 Sep 2007, Kevin Oberman wrote:
>
> >> Date: Sat, 29 Sep 2007 23:25:08 -0400
> >> From: "Ben Kaduk" <minimarmot at gmail.com>
> >> Sender: owner-cvs-all at freebsd.org
> >>
> >> On 9/29/07, Garance A Drosehn <gad at freebsd.org> wrote:
[snip]
> >>>
> >>> Does this mean that I should not switch to ULE on my single-CPU PowerPC
> >>> mini-Mac?
> >>>
> >>
> >> I was under the impression that BSD is preferred to ULE for single-processor
> >> systems, irregardless of the processor architecture.
> >
> > YMMV, but ULE seems to generally work better then 4BSD for interactive
> > uniprocessor systems. The preferred scheduler for uniprocessor servers
> > is less clear, but many test have shown ULE does better for those
> > systems in the majority of cases.
>
> I feel it's safe to say desktop behavior on UP is definitely superior.  I
> think there is no significant difference on UP between 4BSD and ULE except
> perhaps in context switching microbenchmarks where ULE falls behind.
>

I'm glad to be corrected.  Thanks for all the great work, Jeff!

-Ben Kaduk