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On 08/14/13 09:18, Pandu Poluan wrote: |
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> Hello list! |
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> |
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> My company has 2 HP DL585 G5 servers and 5 Dell R... something servers. |
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> All using AMD processors. They currently are acting as XenServer hosts. |
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> |
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> How do I determine the 'least common denominator' for Gentoo VMs |
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> (running as XenServer guests), especially for gcc flags? |
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> |
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> I know that the (theoretical) best performance is to use -march=native , |
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> but since the processors of the HP servers are not exactly the same as |
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> the Dell's, I'm concerned that compiling with -march=native will render |
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> the VMs unable to migrate between the different hosts. |
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> |
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> Note: Yes I know the HP servers are much older than the Dell ones, but |
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> if I go -march=native then perform an emerge when the guest is on the |
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> Dell host, the guest VM might not be able to migrate to the older HPs. |
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> |
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> Rgds, |
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> -- |
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> |
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-march=i386? |
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|
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-- |
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Stop talking and start compiling. |
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Linux user #557897 |