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February 12, 2018
  • The package will now pull down pre-built binaries if compilation fails.

    After confirming that the binary downloading functionality works, the feature has been enabled by default. The installation script will still default to a fresh build where possible, using the download option as a fall back.

  • The process will no longer be held open due to pending timers.

    Previously, the timer used to calculate the CPU usage by a tick of the event loop was left pending, causing the process to hang.


September 26, 2017
  • Metric timers no longer hold the process open.

Thanks to @samshull for the contribution!


April 3, 2017
  • Fixed build error on Windows thanks to Maximilian Haupt (@0x7f).

  • Added C++-layer unit testing using gtest.

  • Updated readme with correct installation for the New Relic Agent v1.


February 6, 2017
  • Added an event loop CPU usage metric.

    The module will now report round trip CPU usage metrics for Node's event loop. This metric can be read off with nativeMetrics.getLoopMetrics() and will represent the amount of CPU time per tick of the event loop.


January 19, 2017
  • Removed pre-compiling binaries using the node-pre-gyp module.

    Previously we provided pre-compiled binaries for certain platforms and versions of Node. However, this caused issues for customers using shrinkwrapping. In order to support shrinkwrapping as well as all versions of Node and npm that our customers use, we have decided to remove this feature. This means that in order to use this module, users now need to have a compiler on the machine where it is being installed. See [node-gyp] ( for more information on compiling native addons.


January 4, 2017
  • Removed support for Node 0.10.

    The segfault-handler dependency no longer compiles on Node 0.10 in our tests.

  • The node-pre-gyp module is now a bundled dependency.

    Previously it was installed using a preinstall script, which was causing an issue with shrinkwrapping parent projects. Thanks to Robert Rossman (@Alaneor) for the contribution!

  • Added License section to the Readme file.


December 7, 2016
  • General release. No code changes from v0.1.1.


December 5, 2016
  • Added guard against binding GC events more than once.

  • Removed OS X from Travis to temporarily get around extremely long builds. Added script to run tests locally across multiple versions of Node.

  • Added test for checking licenses of dependencies.


November 29, 2016
  • Added gc event with duration and type of garbage collection.
  • Added usage event with current and diff of resource usage stats.