Re: More ULE bugs fixed.
From: Jeff Roberson (jroberson_at_chesapeake.net)
Date: 10/27/03
- Previous message: Kenneth D. Merry: "HEADS UP: CAM error recovery change"
- In reply to: Bruce Evans: "Re: More ULE bugs fixed."
- Next in thread: Jon Mini: "Re: More ULE bugs fixed."
- Reply: Jon Mini: "Re: More ULE bugs fixed."
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
Date: Mon, 27 Oct 2003 02:22:39 -0500 (EST) To: Bruce Evans <bde@zeta.org.au>
On Fri, 17 Oct 2003, Bruce Evans wrote:
> On Fri, 17 Oct 2003, Jeff Roberson wrote:
>
> > On Fri, 17 Oct 2003, Bruce Evans wrote:
> >
> > > How would one test if it was an improvement on the 4BSD scheduler? It
> > > is not even competitive in my simple tests.
> > > ...
> >
> > At one point ULE was at least as fast as 4BSD and in most cases faster.
> > This is a regression. I'll sort it out soon.
>
> How much faster?
>
make kernel on UP seems to be within 1% of 4BSD now. I actually had some
runs which showed lower system time. I think I can still improve the
situation some. Anyway, I found some bugs relating to idle prio tasks,
and also ULE had been doing almost twice as many context switches as 4BSD.
Now it's doing about 8% more. I'm still tracking this down.
Anyhow, it should be much closer now. I still have some plans for SMP
that should improve things quite a bit there but UP is looking good.
Cheers,
Jeff
_______________________________________________
freebsd-current@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-current
To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"
- Previous message: Kenneth D. Merry: "HEADS UP: CAM error recovery change"
- In reply to: Bruce Evans: "Re: More ULE bugs fixed."
- Next in thread: Jon Mini: "Re: More ULE bugs fixed."
- Reply: Jon Mini: "Re: More ULE bugs fixed."
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
Relevant Pages
|
|
