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?

使用該 issue 中約 10,000 個 HTML 檔案的工作負載，透過 LibGit2Sharp v0.15.0 重現所回報的效能下降，並在 repository 逐漸增大時測量 Stage 和 Commit。將結果與預期的 Git 行為進行比較，並判定原因屬於 LibGit2Sharp 還是 libgit2；記錄調查結果以及任何相關的 upstream issue。