Node Cookbook - Third Edition

Finding a solution

In this case, Node.js is spending most of the execution time in the https://www.npmjs.com/package/acorn dependency, which is a dependency of https://www.npmjs.com/package/jade.

So we can conclude that template rendering is the bottleneck, our application is spending most of its time in parsing .jade files (through acorn).

In the previous recipe's There's More... section we talked about Profiling for Production. Essentially, if the server is in development mode templates are rendered each time, whereas in production mode templates are cached. Our flamegraph has just made this abundantly clear.

Let's take a look at the resulting flamegraph generating from running the same benchmark on the same server running in production ...