1. A method performed on at least one computer processor, said method comprising: generating a dimensionality reduction transformation representing a first time series collected from tracing a computer application, said first time series comprising performance data for a plurality of functions at each observation of said first time series, each of said plurality of functions being part of said computer application; receiving a second time series collected from tracing said computer application and applying said dimensionality reduction transformation to generate a transformed dataset; and causing said transformed dataset to be displayed.