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view 2014/February/memo/MMAPvsDivideRead.txt @ 40:2b55530913a2
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author | Masataka Kohagura <e085726@ie.u-ryukyu.ac.jp> |
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date | Sat, 08 Feb 2014 18:39:37 +0900 (2014-02-08) |
parents | 4a4d6e475571 |
children | 069bd7447975 |
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[program] [実験環境] firefly で計測 2*2.66 GHz, HHD 1TB, memory 16GB 読み込んだ file size : 10740996168 Byte (10GB) 読み込んでから Task が終了するまでの時間を測定 divide read で一度に読み込む量 : 4*4096*1024 Byte % ./fileread -file ../regex_mas/10gb.txt -cpu 12 -dr bm_search one task size 16k [結果] | -SPE_ANY-|--IO_0---| CPUNUM| MMAP BRead| DRead| 2 95.865063 3 4 104.667434 8 114.974203 12 111.810354 147.010479 24 99.040944 12 MMAP 111.810354 63.559829 77.970525 IO_0 BRead 79.868357 115.067654 107.77211 96.924706 SPE_NUM BRead 102.420338 120.658969 102.126428 118.725368 11 MMAP IO_0 BRead 99.384507 116.714300 134.678377 97.970632 4 IO_0 BRead 102.480095 filesize 15GB 12 mmap 160.332098 224.448694 IO_0 BRead 276.518567 205.553947 bm_search one task size 128k [結果] | |-SPE_ANY-|--IO_0---| CPUNUM| MMAP | BRead | BRead | 1 MMAP second 35.713130 IO BRead 2 MMAP 94.298429 second 17.186720 IO BRead 100.222430 3 MMAP second 12.161487 IO BRead 4 MMAP 135.155317 142.751540 148.916697 second 12.102094 IO BRead 109.181394 97.955774 94.676133 8 MMAP 174.250825 146.720434 147.433098 second 6.942862 IO BRead 90.398165 91.338648 101.322919 12 MMAP 181.776079 148.274648 148.439857 147.485801 147.036413 second 6.929711 IO BRead 95.656162 117.457584 96.305392 91.637826 94.680580 24