Eric Anderson anderson at centtech.com
Wed Apr 30 06:16:25 PDT 2003

I would be using 5.0 on my newest production machine if the NFS serving 
worked.. :(

Steven Hartland wrote:
> 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 at centtech.com>
> To: "agent dero" <dero at bluhayz.homeunix.org>
> Cc: <freebsd-performance at 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 Anderson    Systems Administrator      Centaur Technology
>>Attitudes are contagious, is yours worth catching?
>>freebsd-performance at freebsd.org mailing list
>>To unsubscribe, send any mail to "freebsd-performance-unsubscribe at freebsd.org"
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Eric Anderson	   Systems Administrator      Centaur Technology
Attitudes are contagious, is yours worth catching?

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