Node.js — Profiling Node.js
It's incredibly easy to visualize where your Node program spends its time using DTrace and node-stackvis (a Node port of Brendan Gregg's FlameGraph tool): Run your Node.js program as usual. In another terminal, run: $ dtrace -n 'profile-97/execname == "node" && arg1/{ @[jstack(150, 8000)] = count(); } tick-60s { exit(0); }' > stacks.out This will sample about 100 times per second for 60 seconds an
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perl, DTrace and you - Speaker Deck
Instrumenting the real-time web
OSCON Slides · Dave Pacheco's Blog
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