ULE status

[Kris Kennaway]

On Tue, Feb 08, 2005 at 03:58:22PM +0200, Ion-Mihai Tetcu wrote:
> On Tue, 8 Feb 2005 14:45:17 +0200 (EET)
> "Viktor Ivanov" <v0rbiz at icon.bg> wrote:
> 
> > On Tue, ???????? 8, 2005 14:33, Michael Nottebrock ????:
> > > On Tuesday, 8. February 2005 13:07, Mipam wrote:
> > >> I saw several changes to sched_ule.c in the 5 stable branch.
> > >> Beneath is one of them:
> > >>
> > >> http://lists.freebsd.org/pipermail/cvs-src/2005-February/039863.html
> > >>
> > >> Is the ULE scheduler still far from stable in RELENG_5 or not?
> > >
> > > You can now compile a kernel with options SCHED_ULE again. How well it
> > > works
> > > is for yourself to determine :-) (I've been using it on my UP machine here
> > > since yesterday only).
> > 
> > Hi there
> > 
> > I've been using only SCHED_ULE on my UP WS, even when there was #error
> > def. It never broke, not even once :) Though I think there's trouble
> > with SMP and/or HTT. I tried it once on a P4 and it paniced.
> > 
> > On the other hand, using SCHED_ULE improves sound quality and general
> > system 'response' concerning GUI... don't know 'bout performance.
> 
> By any chance does it help with copying from ata disks on different
> controllers ? For me on large files this brings up "swap_pager:
> indefinite wait buffer" with 4BSD.

That doesn't sound like a scheduler problem, rather a hardware or ata
driver problem.  Did you try sos' new driver yet?

Kris
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