Prometheus is a platform for real-time systems and event monitoring and alerting. Subtract two different metrics in Prometheus | by David O'Dell | Medium Get delta between two custom timestamps in Prometheus Range Vector- a set of time series that have a range of values between two timestamps. Prometheus's query language PromQL is one of the cornerstones of the Prometheus ecosystem. Prometheus Cheat Sheet - Moving Average, Max, Min, etc (Aggregation ... Prometheus relies on accurate time and time drift might cause unexpected query results. Prometheus collects and stores its metrics as time series data, i.e. What are Prometheus Functions? | MetricFire Blog series_rate_fl() - Azure Data Explorer | Microsoft Docs We should obviously fix that. If it is recommended to disable honor_timestamps with Federation, This is something to add in the documentation. Prometheus's PromQL query language has two quite similar functions for calculating the rate of things (well, of counters), . find timestamps for metric Arithmetic binary operators The following binary arithmetic operators exist in Prometheus: + (addition) - (subtraction) * (multiplication) / (division) % (modulo) ^ (power/exponentiation) The Prometheus' main data type is float64 (however, it has limited support for strings). I am wondering if it's possible to calculate and display directly in Grafana the difference between two temperature/value. Write a time-series database engine from scratch - Ryo Nakao It does not seem there are major differences between the two in term of features. Use the duration () function to convert the result into a duration. Prometheus checks different process performance over time. For operations between two instant vectors, the matching behavior can be modified. At t=10 Prometheus scrapes the exporter and adds the metric (with time t=0) to its internal set of metrics. We're using the prometheus operator and set up two servicemonitor resources with match labels. Delta encoding writes only the difference between the previous number and the current one. Chris's Wiki :: blog/sysadmin/PrometheusRateVsIrate I'm creating a dashboard where I want to count the number entries in a query after I filter it using $__timefilter. Operators | Prometheus At t=70 the next scrape happens and Prometheus deduplicates / discards the metric with the same timestamp as before.
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