We Rewrote Our Flame Graph Renderer from SVG to Canvas for Speed

We rewrote our custom visualisation renderers from SVG to be in Canvas

We replaced our SVG-based flame graph renderer with a Canvas implementation to eliminate the performance ceiling caused by managing thousands of DOM nodes. By switching to an immediate-mode API and leveraging zero-copy Arrow data, we achieved instant zooming and scrolling. This approach removes the browser's heavy styling and layout overhead, making our profiler dashboard feel significantly faster for users.

"The fundamental problem here was that we were asking the browser to manage an enormous amount of structure."