We have a graph editing and display component, which is primarily built on SVG (canvas rendering available, too). Performance is rarely a problem. Admittedly, w

We have a graph editing and display component, which is primarily built on SVG (canvas rendering available, too). Performance is rarely a problem. Admittedly, we do remove elements that are not visible from the DOM, for very large graphs those have to be tweaked a bit (same goes for WPF). Generally usability suffers before performance does, and most techniques of improving usability also improve performance.