commit | 989545c9dfe41a3159e664a08641da139111c7c0 | [log] [tgz] |
---|---|---|
author | Benoit Lize <lizeb@chromium.org> | Thu Jun 28 11:25:08 2018 |
committer | Commit Bot <commit-bot@chromium.org> | Thu Jun 28 11:25:08 2018 |
tree | 2a24b3ebbbd01c7083d45e53d034a32c1b2cefcc | |
parent | 94766d09cff6f8aa625093bef39a844f70444ede [diff] |
tools/android: Disk IO simple benchmark tool. Adds a simple tool writing random data to a file, then reading it. The file is optionally evicted from the OS page cache between the read and write. This is used to assess device IO performance locally. From an Android Go device (Gobo) running O MR1 with 360MB free on /data: Without the OS page cache: $ adb shell /data/local/tmp/io_benchmark /data/local/tmp/test 1 Size = 4096 Write 4096 = 50.0us (81.92MB/s) Read 4096 = 1489.0us (2.75MB/s) Size = 8192 Write 8192 = 61.0us (134.30MB/s) Read 8192 = 1486.0us (5.51MB/s) Size = 16384 Write 16384 = 81.0us (202.27MB/s) Read 16384 = 1602.0us (10.23MB/s) Size = 32768 Write 32768 = 145.0us (225.99MB/s) Read 32768 = 1877.0us (17.46MB/s) Size = 65536 Write 65536 = 215.0us (304.82MB/s) Read 65536 = 2656.0us (24.67MB/s) Size = 131072 Write 131072 = 468.0us (280.07MB/s) Read 131072 = 4531.0us (28.93MB/s) Size = 262144 Write 262144 = 642.0us (408.32MB/s) Read 262144 = 5041.0us (52.00MB/s) Size = 524288 Write 524288 = 1219.0us (430.10MB/s) Read 524288 = 8949.0us (58.59MB/s) Size = 1048576 Write 1048576 = 2466.0us (425.21MB/s) Read 1048576 = 13606.0us (77.07MB/s) Size = 2097152 Write 2097152 = 4908.0us (427.29MB/s) Read 2097152 = 25840.0us (81.16MB/s) Size = 4194304 Write 4194304 = 9502.0us (441.41MB/s) Read 4194304 = 76867.0us (54.57MB/s) Size = 8388608 Write 8388608 = 20814.0us (403.03MB/s) Read 8388608 = 119062.0us (70.46MB/s) With it: $ adb shell /data/local/tmp/io_benchmark /data/local/tmp/test 0 Size = 4096 Write 4096 = 56.0us (73.14MB/s) Read 4096 = 172.0us (23.81MB/s) Size = 8192 Write 8192 = 65.0us (126.03MB/s) Read 8192 = 23.0us (356.17MB/s) Size = 16384 Write 16384 = 101.0us (162.22MB/s) Read 16384 = 35.0us (468.11MB/s) Size = 32768 Write 32768 = 134.0us (244.54MB/s) Read 32768 = 57.0us (574.88MB/s) Size = 65536 Write 65536 = 229.0us (286.18MB/s) Read 65536 = 109.0us (601.25MB/s) Size = 131072 Write 131072 = 348.0us (376.64MB/s) Read 131072 = 170.0us (771.01MB/s) Size = 262144 Write 262144 = 721.0us (363.58MB/s) Read 262144 = 354.0us (740.52MB/s) Size = 524288 Write 524288 = 1895.0us (276.67MB/s) Read 524288 = 783.0us (669.59MB/s) Size = 1048576 Write 1048576 = 2405.0us (436.00MB/s) Read 1048576 = 2872.0us (365.10MB/s) Size = 2097152 Write 2097152 = 4688.0us (447.34MB/s) Read 2097152 = 3398.0us (617.17MB/s) Size = 4194304 Write 4194304 = 10358.0us (404.93MB/s) Read 4194304 = 6556.0us (639.77MB/s) Size = 8388608 Write 8388608 = 19040.0us (440.58MB/s) Read 8388608 = 17753.0us (472.52MB/s) TBR=digit@chromium.org # per tools/OWNERS Bug: 837659, 857070 Change-Id: I33fe4aeb287a5c5910c941a580093d9fecf8f758 Reviewed-on: https://chromium-review.googlesource.com/1116700 Commit-Queue: Benoit L <lizeb@chromium.org> Reviewed-by: Benoit L <lizeb@chromium.org> Reviewed-by: David Turner <digit@chromium.org> Reviewed-by: Egor Pasko <pasko@chromium.org> Cr-Commit-Position: refs/heads/master@{#571077}
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