2014/01/23 (THU)

    [実験内容]
        fileread と regex_mas (BM_search) の2つで計測
        一度実行すると kernel の cache の中に入り込んでしまうため、測るたんびに再起動という原始的なことを(

        (条件分岐: main.cc)
            if (divide_read_flag != 0) {
                printf("[divide read mode]\n");
                w->file_mmap = (char*)manager->allocate(w->read_filesize);
                r_run = manager->create_task(RUN_READ_BLOCKS, (memaddr)&w->self, sizeof(memaddr),0,0);
            }else {
                printf("[mmap mode]\n");
                r_run = manager->create_task(MMAP , (memaddr)&w->self, sizeof(memaddr),0,0);
            }

        (読み込み部分の実装: main.cc)


        [問題点]
            w->file_mmap = (char*)manager->allocate(w->read_filesize);
            と allocate しようとしているので、メモリ量より大きいデータに対してプログラムを実行することができない。(要改善)

        [実験環境]
            local の Mac Book Air にて計測
            Core i5, SSD 240GB, memory 4GB
            読み込んだ file size : 11524674 Byte (11.5MB)

        [結果]
            [fileread] (D_Read : divide read)
                CPU_TYPE SPE_ANY
                mode    , cpu_num,   first,   cache
                MMAP    ,       1,   0.085,   0.104
                D_Read  ,       1,  50.116,  17.038
                D_Read  ,       2,  82.468,  10.731
                D_Read  ,       3,  63.819,  10.039
                D_Read  ,       4,  56.960,  10.176

                CPU_TYPE IO_0
                mode    , cpu_num,   first,   cache
                MMAP    ,       1,   0.102,   0.099
                D_Read  ,       1,  49.611,  12.747
                D_Read  ,       2,  49.524,  13.409
                D_Read  ,       3,  49,823,  12.864
                D_Read  ,       4,  49.581,  13.505

            [regex_mas(BM_search)]
                CPU_TYPE SPE_ANY
                mode    , cpu_num,   first,   cache
                MMAP    ,       1, 102.260,  38.466
                MMAP    ,       2,  75.201,  23.714
                MMAP    ,       3,  60.065,  18.756
                MMAP    ,       4,  58.234,  18.715
                D_Read  ,       1,  82.814,  45.250
                D_Read  ,       2, 127.040,  30.094
                D_Read  ,       3,  77.703,  26.045
                D_Read  ,       4,  72.097,  26.188

                CPU_TYPE IO_0
                mode    , cpu_num,   first,   cache
                MMAP    ,       1, 102.824,  38.275
                MMAP    ,       2,  72.691,  23.418
                MMAP    ,       3,  60.065,  18.786
                MMAP    ,       4,  58.234,  18.715
                D_Read  ,       1,  84.679,  46.063
                D_Read  ,       2,  71.691,  33.418
                D_Read  ,       3,  68.778,  30.471
                D_Read  ,       4,  66.016,  30.357