FreeBSD and Intel Hyperthreading technology.
Chad Leigh -- Shire.Net LLC
chad at shire.net
Wed Oct 5 11:38:40 PDT 2005
On Oct 5, 2005, at 11:48 AM, Pranav Peshwe wrote:
> Hello,
> I have an Intel P4 2.8Ghz processor with Hyperthreading
> (HT).
> The dmesg displays a message saying HT is present and 2 logical
> CPUs present.I tried toggling the setting in BIOS but no difference.
> How does the FBSD(v5.4 stable) kernel deal with HT ? Do the
> internal
> workings( maybe locking, per processor data or other things) change as
> compared to a simple non-HT processor ? or does it use employ SMP
> methods to deal with the 2 logical CPUs presented by a HT processor ?
>
> I want to do kernel programming on FBSD and my project partners have
> non-HT CPUs.How much difference will HT make ? can it be avoided ?
I would suspect that if you do not run an SMP kernel it won't matter
Chad
---
Chad Leigh -- Shire.Net LLC
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chad at shire.net
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