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    Subject[MMTests] Sysbench read-only on xfs
    Configuration:	global-dhp__io-sysbench-large-ro-xfs
    Result: http://www.csn.ul.ie/~mel/postings/mmtests-20120424/global-dhp__io-sysbench-large-ro-xfs
    Benchmarks: sysbench

    Summary
    =======

    Looking better in places than ext3 but still of concern.

    Benchmark notes
    ===============

    mkfs was run on system startup.
    mkfs parameters -f -d agcount=8
    mount options inode64,delaylog,logbsize=262144,nobarrier for the most part.
    On kernels to old to support delaylog was removed. On kernels
    where it was the default, it was specified and the warning ignored.

    sysbench is an OLTP-like benchmark. The test type was "complex" and
    read-only. The table size was 50,000,000 rows regardless of memory size
    but far exceeds the memory size of any of the test machines. sysbench
    was chosen because it's a reasonably complex OLTP-like benchmark with
    straight-forward prerequisites.

    The backing database was postgres.

    ===========================================================
    Machine: arnold
    Result: http://www.csn.ul.ie/~mel/postings/mmtests-20120424/global-dhp__io-sysbench-large-ro-xfs/arnold/comparison.html
    Arch: x86
    CPUs: 1 socket, 2 threads
    Model: Pentium 4
    Disk: Single Rotary Disk
    ===========================================================

    sysbench
    --------
    Everything regressed.

    Swapping for kernels 3.1 and 3.2 was nuts.

    ==========================================================
    Machine: hydra
    Result: http://www.csn.ul.ie/~mel/postings/mmtests-20120424/global-dhp__io-sysbench-large-ro-xfs/hydra/comparison.html
    Arch: x86-64
    CPUs: 1 socket, 4 threads
    Model: AMD Phenom II X4 940
    Disk: Single Rotary Disk
    Status: Ok
    ==========================================================

    sysbench
    --------
    For low number of clients, this has generally improved but regressed
    for larger number of clients.

    Swapping in kernel 3.1 was high.

    ==========================================================
    Machine: sandy
    Result: http://www.csn.ul.ie/~mel/postings/mmtests-20120424/global-dhp__io-sysbench-large-ro-xfs/sandy/comparison.html
    Arch: x86-64
    CPUs: 1 socket, 8 threads
    Model: Intel Core i7-2600
    Disk: Single Rotary Disk
    Status:
    ==========================================================

    Generally this is telling a much better story but this could be because
    of the much larger memory size of this machine offsetting some other
    regression.

    Swapping in 3.1 and 3.2.

    --
    Mel Gorman
    SUSE Labs


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