Moinak Ghosh
aed69b2d53
Add test cases for Global Deduplication.
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Update documentation and code comments.
Remove tempfile pathname after creation to ensure clean removal after process exit.
2013-04-26 18:32:00 +05:30
Moinak Ghosh
5bb028fe03
Change Segmented Dedupe flow to improve parallelism.
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Periodically sync writes to segcache file.
Use simple insertion sort for small numbers of elements.
2013-04-25 23:42:32 +05:30
Moinak Ghosh
79a6e7f770
Capability to output data to stdout when compressing.
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Always use segmented similarity bases dedupe when using -G option in pipe mode.
Standardize on average 8MB segment size for segmented dedupe.
Fix hashtable sizing.
Some miscellaneous cleanups.
Update README with details of new features.
2013-04-24 23:03:58 +05:30
Moinak Ghosh
6c5d8d9e18
Optimize index lookup for 8-byte keys.
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More cleanups.
2013-04-24 19:49:43 +05:30
Moinak Ghosh
5d6ffd969d
More tweaks to slightly improve segment dedupe efficiency.
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Use on average 8MB segments for all cases.
Some minor cleanps.
2013-04-24 19:13:07 +05:30
Moinak Ghosh
eabd670790
Improve segment similarity detection and drastically reduce index size.
2013-04-23 23:15:32 +05:30
Moinak Ghosh
6b7d883393
Tweak percentage intervals computation to improve segmented dedupe ratio.
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Avoid repeat processing of already processed segments.
2013-04-23 18:53:56 +05:30
Moinak Ghosh
d29f125ca7
Clean up temp cache dir handling.
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Allow temp dir setting via specific env variable to point to fast devices like ramdisk,ssd.
2013-04-22 22:57:31 +05:30
Moinak Ghosh
2c4024792a
Several bugfixes.
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Avoid matching with self during hash lookup.
2013-04-22 22:07:07 +05:30
Moinak Ghosh
6b23f6a73a
Several fixes and optimizations.
2013-04-22 19:52:18 +05:30
Moinak Ghosh
c0b4aa0116
Many optimizations and changes to Segmented Global Dedupe.
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Use chunk hash based similarity matching rather than content based.
Use sorting to order hash buffer rather than min-heap for better accuracy.
Use fast CRC64 for similarity hash for speed and lower memory requirements.
2013-04-21 18:11:16 +05:30
Moinak Ghosh
3b8a5813fd
Many optimizations to segmented global dedupe.
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Use chunk hash based cumulative similarity matching instead of chunk content.
2013-04-19 22:51:51 +05:30
Moinak Ghosh
2f6ccca6e5
Update usage text and add minor tweaks.
2013-04-18 22:55:49 +05:30
Moinak Ghosh
8ae571124d
Complete implementation for Segmented Global Deduplication.
2013-04-18 21:26:24 +05:30
Moinak Ghosh
a22b52cf08
Work in progress changes for Segmented Global Deduplication.
2013-04-14 23:51:54 +05:30
Moinak Ghosh
50251107de
Work in progress changes for Segmented Global Deduplication.
2013-04-09 22:23:51 +05:30
