Date: Wed, 30 Apr 2003 14:05:14 +0100 From: "Steven Hartland" <killing@barrysworld.com> To: "Eric Anderson" <anderson@centtech.com>, "agent dero" <dero@bluhayz.homeunix.org> Cc: freebsd-performance@freebsd.org Subject: Re: FBSD 5 & SMP Message-ID: <017101c30f19$2414fc60$b3db87d4@vader> References: <3045.172.178.229.216.1051706735.squirrel@bluhayz.homeunix.org> <3EAFC81D.4070808@centtech.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Im not sure it depends on the machine and the apps being run.
We have been running 5.0-RELEASE on all or production
machines after we did a soke test and found no issues at all
in our environment. What would be interesting to know though
is if 4.8 + Hyperthreading + SMP out performed 5.0 SMP
as it doesn't have Hyperthreading support. Any one know if
5.0 has Hyperthreading in CURRENT?
Steve
----- Original Message -----
From: "Eric Anderson" <anderson@centtech.com>
To: "agent dero" <dero@bluhayz.homeunix.org>
Cc: <freebsd-performance@freebsd.org>
Sent: Wednesday, April 30, 2003 1:57 PM
Subject: Re: FBSD 5 & SMP
> agent dero wrote:
> > I was reading the FBSD 5.0 release notes, and how the new version has
> > better support for multiple processors. I haven't been able to find any a
> > 4.x-STABLE SMP support docs. Does this mean that 4.7, my current release,
> > doesn't support the multiple processors well. I am rebuilding my small
> > business' server, and trying to decide if a dual processor will be the
> > better way to go, but not sure if the advantages are going to be huge with
> > the. I read the previous message about WITH_THREADS as a ports option, but
> > the ports maximizing the dual CPUs isn't my greatest, I need the kernel
> > itself to maximize the CPUs. Is this possible under any of the stable
> > releases, before 5.0 ??
>
> Yes, FreeBSD versions prior to 5.0 have SMP support, however 5.0's
> support is more "finely tuned" and will give you better results.
> However, since this sounds like a production server, you may want to
> stick with 4.8-RELEASE, and built a new kernel with SMP support.
> Depending on what you are using the machine for, you may or may not see
> a performance benefit of a dual processor machine.
>
> What's the machine's primary function?
>
> Eric
>
>
> --
> ------------------------------------------------------------------
> Eric Anderson Systems Administrator Centaur Technology
> Attitudes are contagious, is yours worth catching?
> ------------------------------------------------------------------
>
> _______________________________________________
> freebsd-performance@freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-performance
> To unsubscribe, send any mail to "freebsd-performance-unsubscribe@freebsd.org"
>
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?017101c30f19$2414fc60$b3db87d4>