Ewan Todd wrote:
>>5.3 ships with SMP turned on, which makes lock operations rather
>>expensive on single-processor machines. 4.x does not have SMP
>>turned on by default. Would you be able to re-run your test with
>>SMP turned off?
> I'm pretty sure there's no SMP in this kernel.
> #cd /usr/src/sys/i386/conf
> #fgrep SMP MYKERNEL
> GENERIC has no SMP in it, but there's a second "GENERIC" kernel conf
> called "SMP", which simply says:
> include GENERIC
> options SMP
> However, sysctl seems to show smp not active, but not disabled. Is
> that anything to worry about?
> #sysctl -a | grep smp
> kern.smp.maxcpus: 1
> kern.smp.active: 0
> kern.smp.disabled: 0
> kern.smp.cpus: 1
> debug.psmpkterrthresh: 2
Bah, you're right, sorry for the confusion. Too many releases in my
mind, they all seem like a blur.