On Thu, 13 Jul 2006, Jerry McAllister wrote:

On Jul 13, 2006, at 9:22 AM, Danial Thom wrote:

Simply enabling SMP on a single processor system
adds 20-25% overhead in freebsd 6.1. Again,
readily admitted/accepted by the developers.
There is no way to recover that in efficiency, at
least not for a long time.

So don't enable SMP on a single cpu system.  Easy enough to avoid.

Why would anyone want to enable SMP on a single CPU system anyway.

Actually, I believe all the new boot disks / ISOs are all SMP-enabled, so unless you build a custom kernel (some ppl do just run GENERIC ... I'm not one, mind you), you could be running an SMP-enabled kernel on a UP system without even knowing it ...

Marc G. Fournier           Hub.Org Networking Services (http://www.hub.org)
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