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Size: 1254
Comment: adds disclaimer about the patch queue
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Size: 1257
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 8: | Line 8: |
| || || total size (kb) || relative size <<BR>> (plain == 1) || 00manifest.d size || 00manifest.d relative size <<BR>> (plain == 1) || || plain || 25708 || 1.00 || 8632k || 1.00 || |
|| || total size (kb) || relative size <<BR>> (plain == 1) || 00manifest.d size (kb) || 00manifest.d relative size <<BR>> (plain == 1) || || plain || 25708 || 1.00 || 8632 || 1.00 || |
| Line 20: | Line 20: |
| http://bitbucket.org/wbruna/hg-zlibstream/ | http://bitbucket.org/wbruna/hg-zlibstream/ |
Compressing revlog delta chunks reusing the zlib stream
Current revlog format compresses delta chunks separately from each other. The idea is to use the same compression object for a snapshot chunk and its delta chunks, simply sync-flushing the zlib stream for each chunk.
Test results
Mercurial crew (http://hg.intevation.org/mercurial/crew) - 10395 revisions |
||||
|
total size (kb) |
relative size |
00manifest.d size (kb) |
00manifest.d relative size |
plain |
25708 |
1.00 |
8632 |
1.00 |
zlibstream applied |
18400 |
0.72 |
4104 |
0.48 |
plain, |
21740 |
0.85 |
4668 |
0.54 |
zlibstream applied, |
16856 |
0.66 |
2560 |
0.30 |
Patch queue
The code currently doesn't properly sets and checks the requires file, and the changes on revlog chunks take effect immediately on any new revisions: take care when running this on existing repositories!
http://bitbucket.org/wbruna/hg-zlibstream/
Mailing list threads
http://www.selenic.com/pipermail/mercurial-devel/2010-February/018564.html