Profilers How to use this app High CPU To simulate High CPU you can request the following route: /cpu/:id Example: /cpu/45 High Memory To consume memory you can request the following route: /memory , this endpoint will consume 200MB in each request. Showing current memory and cpu time with NodeJS You can request /process and will see the memory allocation and cpu in microseconds. Stop Profiler and get data You can request /end to exit node process and create the output either .cpuprofile or .heapprofile.