Andrea Milani wrote:
Jonathan Horne wrote:
well, wikipedia says this (something that i just now learned about
standard pentium4 line of processors)
[wikipedia]
HyperThreading was present in all Northwood CPUs, but was disabled in
the core in all but the 3.06 GHz model.
[/wikipedia]
That's not true. I have a 2.6 GHz Northwood, and it supports
HyperThreading (however I'm not running FreeBSD on it, so I can't help
you with SMP).
You can use the Intel Processor Spec Finder
(http://processorfinder.intel.com/) to discover the capabilities of
your CPU, but I think the "HTT" that appears in the dmesg output
stands for Hyper Threading Technology.
As noted by Andrea, HTT has been available since 2.6GHz in the Northwood
series (think 2.4GHz was the last non-HTT based Northwood CPU but I'd
have to check some internal sources).
If you don't have SMP support setup on your freebsd box you need to
either a) use the generic SMP kernel (it's called SMP, not GENERIC), or
build a custom kernel with the following lines:
options SMP
device apic
Then you'll have a SMP enabled kernel :).
You also need to add:
kern.smp.active = 1
kern.smp.cpus = 1
to /etc/sysctl.conf. After you do that, you should see the following:
[EMAIL PROTECTED] /home/gcooper]# dmesg | grep SMP
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
SMP: AP CPU #1 Launched!
Either Wikipedia's wrong, or you accidentally misread / misquoted that
article.
Cheers,
-Garrett
_______________________________________________
[email protected] mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to "[EMAIL PROTECTED]"
