Difference between revisions of "Flash Filesystem Benchmarks"

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(Test methodology: there now is a dedicated page)
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== Linux 2.6.36 results ==
 
== Linux 2.6.36 results ==
 
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See [[Flash Filesystem Benchmarks 2.6.39|this page]] for the results
These results were obtained on a [http://www.calao-systems.com/articles.php?lng=en&pg=5932 CALAO Systems USB-A9263-C02] board.
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See our [http://elinux.org/images/d/d7/Elce2010-flash-filesystems.pdf ELCE 2010 presentation] for complete details and graphical representations of results.
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Test: init_time (s)
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size ubifs  jffs2  yaffs2
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8 0.34 0.12 0.07
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32 0.78 0.39 0.25
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128 1 0.41 0.26
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252 1.17 0.42 0.26
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Test: init_mem (KB)
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size ubifs  jffs2  yaffs2
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8 888 444 96
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32 916 464 96
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128 956 576 88
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252 988 436 80
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Test: mount_time (s)
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size ubifs  jffs2  yaffs2
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8 0.14 0.11 0.03
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32 0.36 0.48 0.34
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128 0.43 1.38 0.51
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252 0.33 2.08 0.96
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Test: mount_mem (KB)
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size ubifs  jffs2  yaffs2
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8 544 184 8
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32 532 316 20
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128 548 712 664
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252 540 1540 2336
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Test: init_time + mount_time (s)
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size ubifs  jffs2  yaffs2
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8 0.48 0.23 0.1
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32 1.14 0.87 0.59
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128 1.43 1.79 0.77
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252 1.5 2.5 1.22
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Test: init_mem + mount_mem (MB)
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size ubifs  jffs2  yaffs2
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8 1432 628 104
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32 1448 780 116
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128 1504 1288 752
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252 1528 1976 2416
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Test: used_space (KB)
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size ubifs  jffs2  yaffs2
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8 4520 4196 8000
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32 16164  13940  30204
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128 64748  54028  117428
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252 127192  109880  233676
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Test: read_time (s)
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size ubifs  jffs2  yaffs2
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8 4.46 1.48 1.18
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32 1.84 5.46 1.8
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128 4.86 19.53  4.81
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252 11.59  43.97  11.51
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Test: remove_time (s)
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size ubifs  jffs2  yaffs2
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8 7.4 5.76 9.52
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32 6.93 5.11 7.77
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128 10.16  8.97 16.42
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252 17.26  9.82 37.56
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Test: write_time (s)
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size ubifs  jffs2  yaffs2
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8 4.83 15.97  4.31
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32 16.47  60.83  11.14
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128 61.41  236.96  37.09
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252 118.38  459.58  70.56
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Test: video_write_time (s)
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size ubifs  jffs2  yaffs2
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8 - 16.06  3.69
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32 19.03  60.92  8.45
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128 72.76  238.99  28.85
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252 140.16  461.35  55.16
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Revision as of 14:58, 12 July 2011

Free Electrons has performed flash filesystem benchmarks, with funding from the CE Linux Forum , and presented the results at ELC Europe 2010.

Test methodology

See our ELCE 2010 presentation for complete details and benchmark results.

Test automation scripts

See this page for more details.

Free Electrons created Python scripts that automate the execution of commands through a serial line (including bootloader and kernel booting), and measure the time taken to execute these commands. The scripts were designed to be generic, and support for new boards can easily be added by creating board specific Python definitions.

A first version of these scripts can be found on [1] (link outdated), and are released under the terms of the GPLv2 license. Working board automation files are provided for the CALAO USB-A9263-C02, Beagle and IGEPv2 boards. An ARM root filesystem containing all the filesystem utilities is also given in the same location.

A description of what these scripts measure, and how, is available here.

Linux 2.6.39 results

See this page for the results

Linux 2.6.36 results

See this page for the results