Prometheus and PromQL 3 · Rates and aggregation
Memory used as a percentage
A common node_exporter query for host memory use.
100 * (1 - node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes)
Official Prometheus and PromQL 3 documentation
More rates and aggregation commands
- Per-second rate of a counter
- Total increase over a window
- Aggregate across series
- Error ratio
- 95th percentile latency
- Top N series
All rates and aggregation commands · Prometheus and PromQL 3 cheatsheet