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[jgit-dev] JGit Garbage Collection very slow on large repository

Hi JGit team,

I am an engineer from Oracle, and recently we are seeing some performance issues when doing garbage collection using JGit. The size of the repository is around 400MB, and around 30000 branches, and 50000 commits in this repository. When I check the logs, I found it takes around 2hour 30mins to build the bitmap index. I am asking here to get more ideas from the professional team: why it takes so long for doing GC on this repository? Is that expected?


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