0.9.2, updated README and benchmarks
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README.rst
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README.rst
@ -27,15 +27,32 @@ a folder after moving it to another drive.
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Performance
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-----------
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Obviously depends on how fast the underlying drive is. No rigorous
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performance tests have been done. For informational purposes, a typical
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5400 RPM laptop hard drive scanning a 60+ GB music library takes around
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15 minutes. On an OCZ Vertex 3 SSD drive ``bitrot`` is able to scan
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a 100 GB Aperture library in under 10 minutes. Both tests on HFS+.
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Obviously depends on how fast the underlying drive is. Since bandwidth
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for checksum calculations is greater than your drive's data transfer
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rate, even when comparing mobile CPUs vs. SSD drives, the script is
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single-threaded.
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No rigorous performance tests have been done. Scanning a ~1000 files
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totalling ~4 GB takes 20 seconds on a 2015 Macbook Air (SM0256G SSD).
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This is with cold disk cache.
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Some other tests back from 2013: a typical 5400 RPM laptop hard drive
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scanning a 60+ GB music library took around 15 minutes. On an OCZ
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Vertex 3 SSD drive ``bitrot`` was able to scan a 100 GB Aperture library
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in under 10 minutes. Both tests on HFS+.
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If you'd like to contribute some more rigorous eenchmarks or any
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performance improvements, I'm accepting pull requests! :)
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Change Log
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----------
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0.9.2
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~~~~~
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* bugfix: one place in the code incorrectly hardcoded UTF-8 as the
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filesystem encoding
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0.9.1
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~~~~~
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@ -155,4 +172,7 @@ Authors
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Glued together by `Łukasz Langa <mailto:lukasz@langa.pl>`_. Multiple
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improvements by `Yang Zhang <mailto:yaaang@gmail.com>`_, `Jean-Louis
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Fuchs <mailto:ganwell@fangorn.ch>`_ and `Phil Lundrigan <mailto:philipbl@cs.utah.edu>`_.
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Fuchs <mailto:ganwell@fangorn.ch>`_, `Phil Lundrigan
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<mailto:philipbl@cs.utah.edu>`_, `Ben Shepherd
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<mailto:bjashepherd@gmail.com`, and `Peter Hofmann
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<mailto:scm@uninformativ.de>`_.
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@ -40,9 +40,9 @@ import tempfile
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import time
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DEFAULT_CHUNK_SIZE = 16384
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DEFAULT_CHUNK_SIZE = 16384 # block size in HFS+; 4X the block size in ext4
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DOT_THRESHOLD = 200
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VERSION = (0, 9, 1)
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VERSION = (0, 9, 2)
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IGNORED_FILE_SYSTEM_ERRORS = {errno.ENOENT, errno.EACCES}
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FSENCODING = sys.getfilesystemencoding()
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