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On Thu, Jul 21, 2011 at 12:43 AM, Stefan G. Weichinger <lists@×××××.at>wrote: |
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> |
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> Maybe a bit OT, but otherwise close to gentoo as well (as we all |
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> configure our kernels individually ....) (see ps below): |
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> |
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> When I configure my gentoo-server for Linux KVM, how to get the |
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> clock-issues right, in terms of correctness and performance? |
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> |
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> I assume that I am not the only one scratching his head ... but maybe |
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> some of us simply hesitate to ask ;-) |
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> |
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> HPET, RTC, TSC, blah ... |
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> |
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> A new server with a Xeon-CPU tells me: |
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> |
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> "kvm: SMP vm created on host with unstable TSC; guest TSC will not be |
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> reliable" |
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> |
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> Ah, ok. |
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> |
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> Is that bad? Could I do something? Should I? |
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> |
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> My question is // questions are: |
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> |
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> Are there any recommended kernel-config-settings for a performant and |
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> non-drifting KVM-server? |
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> |
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> Is there a "best practise"? |
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> |
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> What is your experience, your recommendation? |
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> |
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> Maybe it should find its way into the gentoo wiki :-) |
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> |
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> Thanks in advance, Stefan |
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> |
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> ps: yeah, I know, this should go to the linux-kvm-ml in an ideal world. |
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> We all know that we would end up subscribed to dozens of mailing-lists |
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> just to get our jobs done .... so pls be tolerant in terms of "what is |
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> off-topic". thx. |
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> |
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> |
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This question is totally related to Gentoo! |
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Try -cpu ? and run with different cpu's to see if this can solve the |
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problem. |
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Kfir |
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