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Maxim Wexler schrieb: |
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> On 6/11/09, Paul Hartman <paul.hartman+gentoo@×××××.com> wrote: |
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>> On Thu, Jun 11, 2009 at 1:14 PM, Maxim Wexler<maxim.wexler@×××××.com> wrote: |
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>>> Hi group, |
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>>> |
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>>> Been tracking down other's kern config for 900A w/ N270 Atom cpu and |
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>>> notice, so far, everyone goes for CONFIG_SMP=y. Why, particularly when |
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>>> most commenters stress keeping the kernel as slim as possible? |
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>>> |
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>>> In the <help> window we have 'If you have a system with only one CPU, |
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>>> like most personal computers, say N.' As far as I know the 900A has |
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>>> only one CPU, unless there is some sort of virtual one I haven't heard |
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>>> of yet. |
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>> Does the CPU have multiple cores? If so, that's probably why. |
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>> |
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> |
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> hmm, when I %cat /proc/cpuinfo I get processor :0 at the top of a list |
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> of stuff then, just below that, processor :1 at the top of an |
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> identical list. |
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> |
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> Are those two cores? I think CONFIG_MCORE2=y is recommended for the |
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> Atom. Does MCORE2 mean 'two cores' or 'core no.2'? The <help> |
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> window(under Symmetric multi-processor support) says nothing about |
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> 'cores' Are 'cores' and 'cpus' the same thing in this context? |
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> |
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> Well, this has taken me all morning and half the afternoon and I |
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> haven't even started 'Power management...' options yet. I'll just say |
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> 'yes' to SMP and carry on. Hopefully have the definitive answer by |
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> midnight and I can make the darn kernel. |
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> |
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> mw |
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> |
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> mw |
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> |
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|
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The N270 (as well as any other 2xx Atom) has one core. However, it |
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supports HyperThreading which produces that second entry in /proc/cpuinfo. |
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|
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For this, you need SMP as well as SMT (an option which you will only see |
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when SMP is enabled). |
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