I need to assess the delta compression efficiency of various types of
binaries. Can I do it this way:
(1) Run git diff between two versions of a binary and pipe the result to
a file. (Sample different types of binaries and changes.)
(2) Assess the output by size or format or content to determine how well
it delta differenced? How would I determine this? What are good
absolute delta sizes? What are good delta size ratios compared to total
file size? Is the number of hunks in the delta important?
(3) Compress the delta file with gzip (or something) and then assess the
compression ratio? What is a good compression ratio? What are good
delta compressed absolute sizes? What are good delta compressed
relative sizes to total file size?
I'm sure I may be missing some things here. I'm new to assessing delta
compression efficiency of binaries in general, and specifically for git.
Please advise.
v/r,
neal
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