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Make a dump of the V8 heap for later inspection.


npm install heapdump


node-gyp configure build


Load the add-on in your application:


The module does not export any properties. Now send the process a SIGUSR2 signal:

$ pkill -USR2 node

A heapdump-xxxx.xxxx.heapsnapshot is written to the application's current directory.

Open Google Chrome and press F12 to open the developer toolbar. Go to the Profiles tab, right-click in the tab pane and select Load profile.... Select the dump file and click Open. You can now inspect the heap snapshot at your leisure.