https://blog.ast.moe/en/tags/performance/Recent posts: GorimuchuHugohttps://blog.ast.moe/en/blog/2026-09-29-2/Tue, 29 Sep 2026 18:25:00 +0900https://blog.ast.moe/en/blog/2026-09-29-2/<p>In the blog post investigating Omoikane’s CI wait times, we wrote about avoiding heavy verification for changes that only affect documentation and about revisiting the build cache. Separate from that, the tests that actually needed to be run were also taking a considerable amount of time. (<a href="https://blog.ast.moe/en/blog/2026-09-29/">source</a>)</p> <p>Omoikane uses Boa to execute JavaScript. Each time a JavaScript realm is created for a page or an iframe, a large script that sets up the DOM API is run. This processing accounted for a substantial portion of the test runtime. In <a href="https://github.com/ieee0824/omoikane/issues/1154">Issue #1154</a>, instead of reducing the number of tests or realms, we investigated this initialization itself.</p>