What is Tracing in Node.js?

 Tracing provides a mechanism to collect tracing information generated by V8, Node core and userspace code in a log file. Tracing can be enabled by passing the --trace-events-enabled flag when starting a Node.js application.

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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.

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

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