2 x quad-core system is slower that 2 x dual core on FreeBSD

Reko Turja Reko.Turja at liukuma.net
Sat Dec 1 14:39:09 PST 2007

On Sat, 01 Dec 2007 23:37:32 +0200, Alexey Vlasov <renton at df.ru> wrote:

> kernel:
> machine         i386
> cpu             I686_CPU
> ident           F1RNT1
> options         PAE

One very probable culprit for slowness

> options         SMP
> options         SCHED_4BSD

Using _ULE might yield a bit more performance as well

> # cat /etc/make.conf
> CPUTYPE?=nocona
> CFLAGS=-O2 -pipe

I think the recommended practise is either use CFLAGS+=<your flags> or put  
local compiler tweaks to COPTFALGS these days. Not sure if this affects  
performance tho'


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