Memory leak 1GB every 2-3 seconds

[steelbrain]

Select which package(s) are affected

@livekit/rtc-node

Describe the bug

Create an index.js file, write this into it

setInterval(() => {
  console.log('hi')
}, 5000)

Run it like node --import @livekit/rtc-node index.js and watch the memory usage explode.

Reproduction

@livekit/rtc-node v0.13.23 (current latest). macOS.

LiveKit server version

LiveKit cloud

Severity

blocking all usage of LiveKit

Additional Information

No response

[lukasIO]

Thanks for the report.

The culprit appears to be the logger we use internally (pino).

When configuring a transport for the logger, and preloading the module via --import the memory leak occurs. It doesn’t appear to matter what kind of transport is configured, just the fact that you configure it in the first place.

I’ll raise an issue with the maintainers to see whether they would want to address this, there's a related report that has been closed.

The issue does not appear to affect regular imports outside of the --import preload but of course there might be other edge cases where this is triggered. Additional side note: within the livekit-rtc codebase the transport for pino is disabled whenever NODE_ENV === 'production'.

Minimal reproduction:

// preload.js
import { pino } from 'pino';

const log = pino({
  transport: {
    target: 'pino/file',
  },
});

and run node --import=./preload.js index.js