Monitor Tab: Reduce ratePer window

[albertteoh]

Requirement - what kind of business use case are you trying to solve?

Reduce confusion in per-second request/error rates in graphs.

Problem - what in Jaeger blocks you from solving the requirement?

The rate duration defaults to 1 hr which can result in quite low rates (e.g. 0.013 requests/sec), which can be confusing.

Proposal - what do you suggest to solve the problem or improve the existing situation?

Online examples of prometheus queries using rate commonly quote a window of 5 mins. As such, changing the ratePer to a smaller window, say, 10m for starters might be a reasonable compromise. It still results in quite a low rate (e.g. 0.08), but it should reach a more expected rate sooner.

The other alternative is to use irate in jaeger-query, however, this only considers the last 2 points in the rate window, and all other information is lost. irate is ideal for a short demo, but in a production environment, I expect rate to be the preferred function.

We can later iterate on whether if this would be useful as a configurable parameter (either through the UI or json config), if not already possible.