On Jun 8, 2014, at 7:52 PM, George Mitchell <george+freebsd@m5p.com> wrote:
> On 06/08/14 19:22, John-Mark Gurney wrote:
>> [...] it turns out that the electricity
>> savings in a year, paid for the entire cost of the new switch... We
>> were talking ~$250/year in savings, so, upgrading can end up saving
>> you money...
>>
> Thanks for the advice on what hardware I should run. But why should I
> believe that upgrading to SMP and running with ULE will make my life
> better? In fact, when I tried ULE + a six-core system + dnetc + make
> buildworld, etc., a couple of years ago (I do have one SMP system),
> the results were just as appalling compared to 4BSD as with a single
> processor. -- George
One reason to believe that things might be better could be that a lot
of development can happen in "a couple of years." It's my belief, in
fact, that a focus of FreeBSD development in recent years has been in
improving performance on multi-core systems.
I recently replaced my single-core FreeBSD/i386 system with a six-core
FreeBSD/amd64 system and my buildworld+buildkernel times went down from
over 5 hours to under 40 minutes. The only single-core systems I run
any more are on FreeBSD/arm. As others have pointed out, it gets
harder and harder to buy new mainstream single-core systems, so it's
inevitable that there will be less contemporary development focus there.
Cheers,
Paul.
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