How to monitor memory usage on heroku (node.js)

Question

There is New Relic for Rails, but I could not find anything available for node.js. Is there any tool or an API to monitor memory usage of heroku dynos?

when you find it please post back here - we decided against using node based on the fact that we couldn't monitor it (at the time - 6 months ago) effectively on Heroku to decide if/when we need to scale. We got in touch with NR who had nothing to say about it at the time. — John Beynon, Mar 13 '12 at 16:17
Support stuff said there is no official tool or API however you could make use of `heroku run /proc/*/statm` (I didn't figure it out myself yet) — pars, Mar 14 '12 at 15:18
@celalo use [node-usage](https://github.com/arunoda/node-usage) which is based on /proc — Arunoda Susiripala, Feb 22 '13 at 16:17

score 4 · Answer 1 · answered Mar 27 '12 at 21:53

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This may not be the full solution you're looking for, but you can get the current memory usage of a Node.js process via process.memoryUsage().

answered Mar 27 '12 at 21:53

Michelle Tilley

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Could you tell how the values can be used? I see, we have rss, headTotal and heapMaster? How can I calculate this to MB and how is this related to the 512 MB RAM of a dyno? – shredding Sep 25 '12 at 13:59
This SO post explains the values: http://stackoverflow.com/questions/12023359/what-do-the-return-values-of-node-js-process-memoryusage-stand-for – bendytree Aug 07 '13 at 17:33

score 1 · Answer 2 · answered Dec 07 '12 at 16:37

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Although not as full-featured as New Relic, the nodetime npm package (and matching site) does provide memory usage, latency and similar monitoring.

answered Dec 07 '12 at 16:37

mikegradek

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score 1 · Accepted Answer · answered Feb 22 '13 at 16:16

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Use node-usage, additionally you can see the CPU usage too.

answered Feb 22 '13 at 16:16

Arunoda Susiripala

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How to monitor memory usage on heroku (node.js)

3 Answers3