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keymetrics / pm2-io-apm

PM2.io APM for Node.JS
Apache License 2.0
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Performance overhead compared to appmetrics package #200

Closed gustavomassa closed 6 years ago

gustavomassa commented 6 years ago

Hello,

I see that you are using your own metric packages like the "event-loop-inspector", but how is performance overhead compared to the appmetrics package? https://github.com/RuntimeTools/appmetrics

wallet77 commented 6 years ago

Hi @gustavomassa

We also used a package close to appmetrics called deepmetrics. So in theory we should have the same overhead.

But what is interesting with pm2-io-apm is the configuration of the apm features you want to enable. So you can use just a one or two metrics only (all the others are not initialized). You can be sure you have the minimum impact on your production.

Furthermore, event-loop-inspector doesn't have any dependencies, it only use built-in methods and the code itself is really simple. So once again the overhead should not be a problem.