Debugging memory leaks with Node.js server

Question

We have a memory leak that is causing our Node server to run out of process memory. What are some suggestions / tools that would help us debug this?

score 5 · Accepted Answer · answered Feb 07 '11 at 07:09

5

Are you running the latest and greatest node.js v0.3.8?

But I believe you might be able to detect leaks with https://github.com/dannycoates/node-inspector.

answered Feb 07 '11 at 07:09

Alfred

We're running v0.3.5. Thanks for the node-inspector link! – Chetan Feb 07 '11 at 07:44
@chetan you found the memory leak? If so, could you please post the code that was leaking for use people, who also are experiencing leaks and how you detected the leak! Thank you :P – Alfred Feb 10 '11 at 01:23
@Alfred: Haven't found it yet :/ Still working on it. I will post an update to this question when I find it. – Chetan Feb 10 '11 at 01:24
O that's too bad! Because you accepted my answer :P. Then I guess you should unaccept my answer ;) ..... – Alfred Feb 10 '11 at 01:31
4

We found the leak, though it didn't have anything to do with node in general -- it seems to have to do with the way node-mongodb-native handles either the variables or callbacks passed to it, though I couldn't find the actual culprit. We fixed the leak by ensuring the variables that went to node-mongodb were in a smaller scope. – Vanwaril Feb 14 '11 at 07:02
Another note: the current build of the v8-profiler doesn't install, so node-inspector wasn't of much help. – Vanwaril Feb 14 '11 at 07:06

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