Questions on the scheduler

[Oliver Herold]

OpenBSD isn't about performance, so it will be most of the time inferior.

http://mail-index.netbsd.org/tech-kern/2007/09/28/0014.html

Maybe this is of some help. But if compare it to Jeffs FreeBSD/Linux benches it
looks rather strange to me.

Cheers, Oliver

On Sat, Sep 29, 2007 at 08:08:53PM +0300, Abdullah Ibn Hamad Al-Marri wrote:
> On 9/29/07, Kris Kennaway <kris at freebsd.org> wrote:
> > Oliver Herold wrote:
> > > Are there any numbers or technical papers? Just out of curiosity.
> >
> > I ran a mysql benchmark against Dragonfly-current and FreeBSD 7 on an
> > 8-core machine (one of the workloads that FreeBSD now performs very well
> > at) and found 0 scaling on dragonfly.  Their developers confirmed that
> > the kernel is still entirely giant locked (as in FreeBSD 4) so no SMP
> > performance benefits are possible.
> >
> > The email thread is here:
> >
> >    http://leaf.dragonflybsd.org/mailarchive/users/2007-05/msg00134.html
> >
> > although the linked graph is offline.  The FreeBSD curve was essentially
> > this one (FreeBSD has improved further since then):
> >
> >    http://people.freebsd.org/~kris/scaling/scaling.png
> >
> > with dragonfly a flat line at ~500 tps independent of load.
> >
> > Kris
> 
> How does NetBSD, and OpenBSD scale when it comes to SMP comparing to
> FreeBSD 7.0?
> 
> 
> -- 
> Regards,
> 
> -Abdullah Ibn Hamad Al-Marri
> Arab Portal
> http://www.WeArab.Net/
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