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Node.js v10.0.0-v8-canary20180201e74b358c21 Documentation
Table of Contents
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, node.async_hooks, and v8 categories are enabled.
node --trace-events-enabled --trace-event-categories v8,node,node.async_hooks server.js
Running Node.js with tracing enabled will produce log files that can be opened
in the chrome://tracing
tab of Chrome.
Starting with Node 10.0.0, the tracing system uses the same time source as the
one used by process.hrtime() however the trace-event timestamps are expressed
in microseconds, unlike process.hrtime() which returns nanoseconds.