Date: Wed, 16 Apr 2008 12:05:33 -0500 From: Derek Ragona <derek@computinginnovations.com> To: daniel.tourde@spray.se, Robert Huff <roberthuff@rcn.com> Cc: josh.carroll@gmail.com, freebsd-questions@freebsd.org Subject: Re: How to switch scheduler on 7.0? Message-ID: <6.0.0.22.2.20080416120226.02537c70@mail.computinginnovations.com> In-Reply-To: <200804161848.42454.daniel.tourde@spray.se> References: <200804152159.46589.daniel.tourde@spray.se> <8cb6106e0804151328t22ff3996o9aeb2a4c26d9f2eb@mail.gmail.com> <18437.5765.761443.586234@jerusalem.litteratus.org> <200804161848.42454.daniel.tourde@spray.se>
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At 11:48 AM 4/16/2008, Daniel Tourde wrote:
>Hi Robert,
>
>The expression "terrible performances" was maybe not the best way to express
>myself. My intentions were not to step on anyone's toe or being nasty. Sorry
>about that.
>
>To describe things shortly, the problem is responsiveness. I have been
>running
>FreeBSD since 4.7 and never experienced what I am experiencing now:
>- Bad responsiveness of the desktop
>- Temporary freeze (10 to 30s)
>- Slow mouse (and not a very smooth movement, a kind of 'step by step')
>etc.
>
> Daniel
>
> > > > I would like to switch scheduler on my FreeBSD 7.0 box but I don't
> > > > know how todo that.
> > >
> > > You will want to use options SCHED_ULE instead of SCHED_4BSD in your
> > > kernel config.
> >
> > Am I correct in remembering SCHED_ULE /is/ the default for 7.0+?
> > If this is true, and you (the OP) do not need the machine for
> > production, there are people who would be interested in hearing
> > about your problems - especially if you are prepared to define (and
> > document) "terrible performace" and help diagnosing the issue.
> >
> >
> > Robert Huff
It may be the X drivers you are using. X is a bit goofed up in the latest
version running on 7, and the drivers seem to create interrupt storms that
tie up a system.
You may want to test in X and not in X performance.
-Derek
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