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    SubjectRe: [PATCH 1/2] aio: add vectored I/O support
    On Sat, Oct 16, 2004 at 07:18:45AM +0200, Avi Kivity wrote:
    > It is a huge performance win, at least on the 2.4-based RHEL kernel.
    > Large reads (~256K) using 4K iocbs are very slow on a large RAID, while
    > after I coded a similar patch I got a substantial speedup.

    I'd think we should fix the submission path instead. Why create
    iovs _and_ iocbs when we only need to create one? And even if we
    decided aio_readv() was still nice to keep, we'd want to fix this
    inefficiency in io_submit().

    Joel

    --

    "Nothing is wrong with California that a rise in the ocean level
    wouldn't cure."
    - Ross MacDonald

    http://www.jlbec.org/
    jlbec@evilplan.org
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