Improve Status performance with many ignored files #1379
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Fix loading of `.gitignore` files in nested ignored directories. These were not matched in the current implementation, as that only checks the ignores of the current directory. As a side-effect this change also leads to significantly improved performance: in a repository with 3M ignored files `Status` now takes 160 s instead of 491 s.
Skip ignored files when walking through the worktree. This signigifantly improves the performance of `Status()`: In a repository with 3M ignored files `Status` now takes 5 s instead of 160 s.
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This PR contains two changes that significantly improve the performance of
WorkTree.Status()(from 491 s to 5 s):This signigifantly improves the performance of
Status():In a repository with 3M ignored files
Statusnow takes 5 s instead of 160 s..gitignorefiles in nested ignored directories.These were not matched in the current implementation, as that only checks the ignores of the current directory.
As a side-effect this change also leads to significantly improved performance: in a repository with 3M ignored files
Statusnow takes 160 s instead of 491 s.I have a backport to
masterready if desired.