How to benchmark a meteor app?

Hi there, I’m a #devops person maintaining a Meteor application: https://github.com/unee-t/frontend/

Users have complained that they see performance slow downs. So I am wondering how to verify this, since from the ALB TargetResponseTime I see nothing untoward except for those people who are polling when the Web socket fails.

Is there some simple way for example to add User Time API? https://www.html5rocks.com/en/tutorials/webperformance/usertiming/

Any other quick tips for me (not a very good JS developer) to get my head around the problem and make users happier?

Hi @hendry,
I suggest trying https://montiapm.com/ so you can monitor what’s happening on your Meteor app ?
Check also what’s happening on MongoDB (Meteor Performance Guide).
Learn about your user’s context : where do they use their mobile app (for example : which area compared to your hosting area, wifi access versus 3G/4G …), size of images …, you can add some app tracking information with Sentry.