Help with interpreting Cloudwatch RUM page load statistics

Question

Hi,

I've recently started AWS Cloudwatch RUM to monitor our we app. I'm particularly interested in it's measurement of page load.

After a week or so of usage, I consistently see by the Apdex by country chart that users from N. America are getting better app performance than users from Germany, by a significant amount: ~37%.

All of our app services (app server, apis, databases, etc) all exist in the AWS Frankfurt, Germany region... so my question is, how can I explain better performance for users outside of Germany? In general, broadband performance here is very good, so I doubt that internet latency & throughput is a significant factor.

Any suggestions on a cause, or how I can troubleshoot?

Answer

An important distinction to be made here is that RUM calculates Apdex score from the application response time to requests that have been received by the application. As a result, this score would be untethered from any network performance or latency involved from the source of the requests.

It may be best to investigate the requests themselves and determine if there are any differences between N. American requests and the requests received from else where, and if these differences may cause a discrepancy in how quickly the application can respond to these requests.

Help with interpreting Cloudwatch RUM page load statistics

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