Tracing | Node.js v7.9.0 Documentation

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# Tracing#

Trace Event provides a mechanism to centralize tracing information generated by V8, Node core, and userspace code.

Tracing can be enabled by passing the `--trace-events-enabled` flag when starting a Node.js application.

The set of categories for which traces are recorded can be specified using the `--trace-event-categories` flag followed by a list of comma separated category names. By default the `node` and `v8` categories are enabled.

    node --trace-events-enabled --trace-event-categories v8,node server.js

Running Node.js with tracing enabled will produce log files that can be opened in the `chrome://tracing` tab of Chrome.