profile frontend performance of oncoprint

[jjgao]

• API loading time
• Are we loading unnecessary data?
• Frontend processing
• Rendering

[adamabeshouse]

as far as oncoprint rendering, it seems basically 100% of javascript time spent sorting the tracks.

I've logged an issue to oncoprintjs that I think will help address that - cBioPortal/oncoprintjs#66 to allow radix sort which is O(n) instead of the costly comparator-based sort which is O(nlogn) (which will also make it possible to make some other optimizations). For mskimpact this could mean a 10+ times speedup .. hopefully..