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    SubjectRe: [PATCH v5 2/2] mmc: core: Support packed command for eMMC4.5 device
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    > Hi Merez
    >
    > On 2 March 2012 19:56, <merez@codeaurora.org> wrote:
    >> Hi,
    >>
    >> Our tests showed that the write packing improved the performance of the
    >> write sequential operations:
    >>
    >> Long write operation:
    >> ----------------------
    >> no-packing: 15.8 MB/s
    >> packed commands patch (both READ and WRITE packing are enabled): 23.3
    >> MB/s
    >>
    >> Several parallel write operations (sum of all the write throughputs):
    >> ---------------------------
    >> no-packing: 17.1 MB/s
    >> packed commands patch(both READ and WRITE packing are enabled): 25 MB/s
    >>
    >> Parallel long read and long write operations (write throughput):
    >> -----------------------------------------------------------------
    >> no-packing: 12.2 MB/s
    >> packed commands patch (both READ and WRITE packing are enabled): 16.3
    >> MB/s
    >>
    >> Parallel short read and long write operations (write throughput):
    >> -----------------------------------------------------------------
    >> no-packing: 15.4 MB/s
    >> packed commands patch (both READ and WRITE packing are enabled): 16.4
    >> MB/s
    >>
    >> Several Parallel short read and short write operations (sum of all the
    >> write throughputs):
    >> --------------------------------------------------------------------------
    >> no-packing: 12.5 MB/s
    >> packed commands patch (both READ and WRITE packing are enabled): 15.5
    >> MB/s
    >>
    >
    > How did you perform the above tests ?
    The sequential tests were performed with the lmdd application.
    Thanks,
    Maya Erez
    Consultant for Qualcomm Innovation Center, Inc.
    Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum




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