CNCF-hosted Co-located Events North America 2024

In the course of several SaaS migrations to Otel and Prom-based exporters, the search for the perfect PromQL CPU Usage (and Mem Usage) query ended up with several candidates. This quick talk will walk through these queries, explain their differences, and offer the crowd a way to rate the queries and vote on which ones they think should be used. A quick search on Stack Overflow will also produce quite a few queries to use and prove the need for some crowdsourcing on what queries should be the standard. Let's let the people decide! Or at least let's understand the appropriateness of various queries versus other options; how container and various prometheus exporter metrics work; and talk about the challenges of observability migrations with regards to translating queries from difference vendors to Open Source telemetry. Queries include cadvisor metrics, kubestate metrics, and node exporter metrics -- which also probably adds to the chaos of why there are so many cpu/mem queries.