Ramkumar Ramachandra wrote: > You can't control the most fundamental thing, stat(): this is the > primary killer of performance on a large worktree. There is currently > no way to block stat(): new-style submodules offers a way to configure > which submodules to block the stat() on. Let me try to put this in simpler language. When you run 'git status' on your toplevel repository, old-style submodules runs git status on each of the submodule repositories also: this is because submodules were traditionally fixed; therefore, if you forget to commit some changes in submodules before you make the superproject commit, you might break the build. In new-style submodules, you can prevent this from happening on a link-specific basis. -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html