Commit and stage execution time not constant

I am currently using LibGit2Sharp (v0.15.0) to keep track of differences in many HTML files (~10,000). Each change to a file or new file results in a single commit. I have noticed that writes and commits are getting slower and slower. Here is a visualization of my tests:

I tried to adjust the repository.Stage(...) and repository.Commit(...) time so that the size of the HTML file size was not taken into account. This was done by simply dividing the write and commit time by the file size.

I was not sure whether this slow down was expected, but after a bit of reading around, it seems to me that git commit should be constant time with respect to the number of commits or files already in the repository. I am not sure if the same assumption can be made about staging.

Is this a known issue with LibGit2Sharp? Or libgit2?

使用该 issue 中约 10,000 个 HTML 文件的工作负载，通过 LibGit2Sharp v0.15.0 重现所报告的性能下降，并在 repository 逐渐增大时测量 Stage 和 Commit。将结果与预期的 Git 行为进行比较，并确定原因属于 LibGit2Sharp 还是 libgit2；记录调查结果以及任何相关的 upstream issue。