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On 5/31/2011 12:11 PM, Tanstaafl wrote: |
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> On 2011-05-31 1:31 PM, James wrote: |
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>> The only thing I've read online that may be applicable is that there |
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>> have been some issues with kernel panics when you give the guest OS |
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>> more than 1 processor. It would suck badly if SMP didn't work well on |
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>> vbox. |
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> |
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> My understanding is it is a general rule that you never give any VM more |
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> than one processor, regardless of which vm hypervisor you are running... |
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> |
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If SMP in VMs were that much of a problem then EC2 and the rest of the |
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clouds would be useless. I'd go so far as to say if you're not |
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oversubscribing your physical CPUs by handing them out multiple times to |
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your VMs you're leaving half of your infrastructure underutilized. |
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That said vbox has never been completely stable for me in any |
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configuration and I usually reboot my laptop once a week. I am running |
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4.0.8 with a Gentoo guest (2.6.36-r5) using 2 CPUs. I haven't noticed |
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any changes in stability since making the change to SMP last month. |
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However there have been at least two SMP guest fixes in the 4.x version. |
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kashani |
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