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    SubjectRe: [RFC PATCH v8 00/16] Provide a zero-copy method on KVM virtio-net.
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    Hello Michael,

    On Sun, 2010-08-01 at 11:31 +0300, Michael S. Tsirkin wrote:
    > I think we should explore the idea for the driver to fall back on data
    > copy
    > for small message sizes.
    > The benefit of zero copy would then be CPU utilization on large
    > messages.

    Yes, we used to have 128 bytes for small copy in other driver. I saw
    Xiaohui's patch here is using 64 bytes. I think we need to compare the
    performance on different platform to decide what's the best for small
    message size.

    Thanks
    Shirley



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