Imagine a database containing the full text of all the books and publications you have ever read, plus all your reading notes with links to the source paragraphs and your text highlights in the source. It also has everything you have ever written: your journal, all the articles, books, documents, and reports. Such a database would be a powerful source of knowledge. With persistence, it is possible to build this in Obsidian . But can Obsidian handle this volume of information? This post is about my attempt to understand Obsidian's performance limits. I will present my approach and findings.