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On Fri, Mar 2, 2018 at 10:45 AM, Mick <michaelkintzios@×××××.com> wrote: |
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> On Friday, 2 March 2018 15:33:02 GMT R0b0t1 wrote: |
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>> You can pass a block device directly to QEMU, and this is recommended |
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>> for performance reasons. |
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> |
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> Does it make a measurable difference, after the guest OS has booted? |
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> |
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> I'll need to try this out. :-) |
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> |
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If I remember right it makes a huge difference in raw IO speed, but |
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one of the most noticeable benefits is that there are no delays as |
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filesystem cache is flushed to service VM IO operations (which would |
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be noticed outside of the VM as well). |
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