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    SubjectRe: ext4/reiser3/btr directory create/read perf
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    On Wed, Sep 30, 2009 at 9:05 PM,  <wbrana@gmail.com> wrote:
    > I reduced benchmark to 10 directories and executed with strace
    I meant 5 directories.

    >
    > Times with 10000 directories and dir_index enabled
    >
    > /mnt/md8: 64 kB chunks
    > ext4
    > void cfs::vdirs_create(): 4996 msec
    > void cfs::vdirs_read(): 5100 msec
    >

    Times with 1000 directories and dir_index enabled
    /mnt/md8: 64 kB chunks
    reiser3
    void cfs::vdirs_create(): 973 msec
    void cfs::vdirs_read(): 60 msec
    ext4
    void cfs::vdirs_create(): 2435 msec
    void cfs::vdirs_read(): 3326 msec
    btrfs
    void cfs::vdirs_create(): 1036 msec
    void cfs::vdirs_read(): 155 msec

    ext4 was 55 times slower than reiser3 in vdirs_read()


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