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Overview
| Comment: | If I am reading this correctly, the JPEG and PNG bars are the ones increasing with each commit, not so much the TIFF bar due to using uncompressed TIFF |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
309af345ab6ae43a62dfc2b4ee3c5917 |
| User & Date: | andygoth 2020-09-28 04:03:55.675 |
Context
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2020-09-28
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| 23:28 | Removed www/branch??.graphml: these are the yEd input files for the old SVG diagrams in www/branching.wiki, which were replaced with Pikchrs in [9ec0ccee33]. check-in: 387322d6d9 user: wyoung tags: trunk | |
| 04:03 | If I am reading this correctly, the JPEG and PNG bars are the ones increasing with each commit, not so much the TIFF bar due to using uncompressed TIFF check-in: 309af345ab user: andygoth tags: trunk | |
| 02:29 | Move change to intended location (shouldn't have been on branch) check-in: fb6b093d97 user: andygoth tags: trunk | |
Changes
Changes to www/image-format-vs-repo-size.md.
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126 127 128 129 130 131 132 |
* BMP and uncompressed TIFF are nearly identical in size for all
checkins, and the repository growth rate is negligible past the
first commit.⁵ We owe this economy to Fossil’s delta compression
feature: it is encoding each of those single-pixel changes in a very
small amount of repository space.
| | | 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 |
* BMP and uncompressed TIFF are nearly identical in size for all
checkins, and the repository growth rate is negligible past the
first commit.⁵ We owe this economy to Fossil’s delta compression
feature: it is encoding each of those single-pixel changes in a very
small amount of repository space.
* The JPEG and PNG bars increase by large amounts on most checkins
even though each checkin *also* encodes only a *single-pixel change*.
* The size of the first checkin in the BMP and TIFF cases is roughly
the same as that for the PNG case, because both PNG and Fossil use
the zlib binary data compression algorithm. This shows that for
repos where the image files are committed only once, there is
virtually no penalty to using BMP or TIFF over PNG. The file sizes
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| ︙ | ︙ |