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Re:Show HN: Git Heat Map – a tool for visualising git repo a... by thecodrr on Sunday January 29, 2023 @08:10AM (#34567753)
I wonder if this can be done faster using the same approach as git-filter-repo or bfg. 68 minutes for something like this is a long time.

Otherwise looks really cool.

Re:Show HN: Git Heat Map – a tool for visualising git repo a... by ByronBates on Sunday January 29, 2023 @01:09PM (#34570844)
Computing diffs is what takes large amounts of time as the object database is used intensively along with limited efficiency of object caches.

I couldn't resist and threw `gitoxide` at it, and it turned out to be more than 2x as fast (even though it uses way more CPU to do that, there is definitely room for improvement).

The PR which adds the `db-gen` program: https://github.com/jmforsythe/Git-Heat-Map/pull/6