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    SubjectRe: [RFC] IO scheduler based IO controller V6
    Hi,

    Here are some fio test results for IO Controller V6 built and not built.
    Iozone test results are also attached.

    Arch: X86
    Mem: 1G
    Disk: 320G
    IO Scheduler: CFQ

    ============
    By normal read and write syscall.

    Block Size:32K
    File Size: 1G * 10

    Mode Normal read | Random read | Normal write | Random write | Direct read | Direct write

    2.6.31-rc1 47,932KiB/s 3,566KiB/s 45,693KiB/s 8,501KiB/s 50,088KiB/s 43,473KiB/s

    2.6.31-rc1-Vivek-V6 47,231KiB/s 3,411KiB/s 42,451KiB/s 8,714KiB/s 51,284KiB/s 42,341KiB/s

    Performance -1.5% -4.4% -7.0% +2.5% +2.4% -2.6%

    ============

    By mmap.

    Block Size:32K
    File Size: 500M

    Mode Normal read | Random read | Normal write | Random write

    2.6.31-rc1 49,951KiB/s 3,245KiB/s 21,950KiB/s 2,771KiB/s

    2.6.31-rc1-Vivek-V6 49,951KiB/s 3,154KiB/s 22,593KiB/s 2,648KiB/s

    Performance 0% -2.8% +2.9% -4.4%

    ============

    By libaio calls

    Block Size:32K
    File Size: 500M

    Mode Normal read | Random read | Normal write | Random write

    2.6.31-rc1 49,447KiB/s 3,296KiB/s 57,519KiB/s 21,093KiB/s

    2.6.31-rc1-Vivek-V6 50,142KiB/s 3,238KiB/s 57,791KiB/s 21,283KiB/s

    Performance +1.4% -1.8% 0% +0.1%

    ============











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