SMP support maturity? AMD64x2 or FX-57?
vinny at tellurian.com
Sat Jul 23 04:41:19 GMT 2005
At 04:27 PM 7/22/2005, Frank Mayhar wrote:
>Brandon Fosdick wrote:
>>SMP support in FreeBSD seems to be a perpetually favorite feature
>>to gripe about, but every release seems to say that its getting
>>better. I'm about to build a new server and am trying to determine
>>if I should go with dual procs or just a single. The AMD64x2 is
>>slightly cheaper than the FX-57 so I'm leaning that way, but it
>>would be a rather pointless savings if SMP isn't well supported.
>>So, is SMP in -STABLE ready for primetime? Can it really make use
>>of two processors?
>Sigh. You know, I've been running with two processors since 4.1 or
>thereabouts. Sure, the BGL scheme is inefficient as far as the
>kernel itself is concerned, but for compute-bound user processes it
>worked just fine. Naturally I avoided 5.0/1/2 for my production
>boxen, waiting for the complete overhaul of SMP to stabilize, but
>when I booted 5.3, everything was fine and I haven't looked back.
>Personally I don't have the first clue what people have found to
>gripe about. It has been good, it got a _lot_ better in 5.x, and
>it's continuing to improve.
>Ports to new processor families are an entirely different kettle of
>fish and have their own sets of problems, virtually all of which
>have to do with the new architecture and not with the general SMP
>Frank Mayhar frank at exit.com http://www.exit.com/
>Exit Consulting http://www.gpsclock.com/
I agree. I'm not a FreeBSD expert by any means, but I do enjoy using
it very much. I've learned a lot about it over the past year or so
that I've been running it. I have both a 4.11 and 5.4 box that have
dual processors and are running like champs. The 5.4 box is doing a
lot more work actually, and it never has a problem. It's been all
good for me, but then again, I probably don't delve quite as deeply
into some of the complex heavy loaded things other do.
vinny at tellurian.com
(973)300-9211 x 125
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