So, all these tip's I've seen focus on improving canvas performance by somehow splitting the drawing into small pieces .. but what if one is working on a drawin

So, all these tip's I've seen focus on improving canvas performance by somehow splitting the drawing into small pieces .. but what if one is working on a drawing app that absolutely needs to redraw a large area most of the time, think sizes like 800x600 or 1024x768. Any good tips to optimize this kind of use-case ? I am developing an online Geometry Generator (http://GeoKone.NET http://GeoKone.NET) that uses a large canvas that is redrawing complex geometry, with paths that almost always change completely when being modified, thus invalidating the "render to image" option almost in all cases, except maybe when moving the formations around. Good tips though and nice to read about people's experience. Too bad I am using Processing.js so I am kinda stuck with the optimizations Processing.js is using.