Supercharging the Git Commit Graph III: Generations and Graph Algorithms
Earlier, we announced that Git 2.18 contains a new commit-graph feature, and we discussed the commit-graph file format. As shipped in Git 2.18, this file only speeds up commit walks by a constant multiple, due to parsing structured data from the commit-graph file. Today, we continue by talking about how we can use the idea of a generation number to greatly reduce the number of commits we walk, giving much greater performance improvements. Many of the topics we discuss today are already on their way to a future version of Git while others are still part of the future plans for the commit-graph feature.
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