greg/pcompress
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126 commits 3 branches 21 tags 7.6 MiB
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12 commits

Author SHA1 Message Date
Moinak Ghosh
d054e0f713 Zlib optimizations. Use raw deflate streams to avoid unnecessary adler32. 
Change some function signatures to improve algo init function behavior.
Fix corner case dedupe bug in error handling flow.
Bump archive version signature.
 2012-11-22 21:02:50 +05:30
Moinak Ghosh
5b1a13480b Fix chunk flag setup when compression fails in adaptive mode. 
Prevent display of non-fatal errors during compression.
 2012-11-09 21:07:23 +05:30
Moinak Ghosh
d4e9cd0140 Improve memory efficiency when total file size < total size of chunks. 
Fix freeing of Zlib structures.
 2012-08-24 20:16:21 +05:30
Moinak Ghosh
9eac774eb1 Add multithreaded LZMA port from p7zip 
Compute balanced thread count between chunk threads and algo threads
Generic way to handle querying algorithm parameters
Clean up unnecessary includes
 2012-08-18 10:20:52 +05:30
Moinak Ghosh
400d0bfa72 Bias fingerprint value with occurrence counts for a better sketch 
Fix latent bug when calling algo deinit in decompression code
Reduce diff threshold for slightly greater delta encoding
Limit similar buffer size difference for less wasted diffing
Change zlib compression wrapper to use faster deflateReset mechanism
Reduce optimization level for Dedupe code, it goes faster
 2012-08-08 22:40:58 +05:30
Moinak Ghosh
f9215b53fb Fix buffer size calculation when decompressing LZ4, Zlib and Bzip2 compressed chunks. 
Slight SSE optimization in LZ4HC.
 2012-08-03 23:19:38 +05:30
Moinak Ghosh
c7cc7b469c Update chunk size computation to reduce memory usage. 
Implement runtime bypass of custom allocator.
Update README.
 2012-07-27 22:03:24 +05:30
Moinak Ghosh
9c3423530c Fix huge chunk handling in zlib compression routines. 
Fix Zlib error messages.
Remove extra variable in Bzip2 decompress routine.
 2012-07-27 00:11:01 +05:30
Moinak Ghosh
d3f5287ee5 Update License info to LGPLv3. 2012-07-07 22:18:29 +05:30
Moinak Ghosh
a1825a2305 Implement Parallel deduplication support. 
Restructure compression functions to take chunk flag as argument.
Add missing error flag printing in LZMA.
Only create enough threads as needed by chunk size and file size.
Minor cleanups and variable name changes.
 2012-07-01 21:44:02 +05:30
Moinak Ghosh
e46d3d10b3 Add basic compression statistics and new option to display them. 2012-05-31 21:36:33 +05:30
Moinak Ghosh
07dfed7769 Initial Commit. 2012-05-28 20:19:29 +05:30