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diff --git a/doc/monitoring/performance/introduction.md b/doc/monitoring/performance/introduction.md index 79904916b7e..ae88baa0c14 100644 --- a/doc/monitoring/performance/introduction.md +++ b/doc/monitoring/performance/introduction.md @@ -1,65 +1 @@ -# GitLab Performance Monitoring - -GitLab comes with its own application performance measuring system as of GitLab -8.4, simply called "GitLab Performance Monitoring". GitLab Performance Monitoring is available in both the -Community and Enterprise editions. - -Apart from this introduction, you are advised to read through the following -documents in order to understand and properly configure GitLab Performance Monitoring: - -- [GitLab Configuration](gitlab_configuration.md) -- [InfluxDB Install/Configuration](influxdb_configuration.md) -- [InfluxDB Schema](influxdb_schema.md) -- [Grafana Install/Configuration](grafana_configuration.md) - -## Introduction to GitLab Performance Monitoring - -GitLab Performance Monitoring makes it possible to measure a wide variety of statistics -including (but not limited to): - -- The time it took to complete a transaction (a web request or Sidekiq job). -- The time spent in running SQL queries and rendering HAML views. -- The time spent executing (instrumented) Ruby methods. -- Ruby object allocations, and retained objects in particular. -- System statistics such as the process' memory usage and open file descriptors. -- Ruby garbage collection statistics. - -Metrics data is written to [InfluxDB][influxdb] over [UDP][influxdb-udp]. Stored -data can be visualized using [Grafana][grafana] or any other application that -supports reading data from InfluxDB. Alternatively data can be queried using the -InfluxDB CLI. - -## Metric Types - -Two types of metrics are collected: - -1. Transaction specific metrics. -1. Sampled metrics, collected at a certain interval in a separate thread. - -### Transaction Metrics - -Transaction metrics are metrics that can be associated with a single -transaction. This includes statistics such as the transaction duration, timings -of any executed SQL queries, time spent rendering HAML views, etc. These metrics -are collected for every Rack request and Sidekiq job processed. - -### Sampled Metrics - -Sampled metrics are metrics that can't be associated with a single transaction. -Examples include garbage collection statistics and retained Ruby objects. These -metrics are collected at a regular interval. This interval is made up out of two -parts: - -1. A user defined interval. -1. A randomly generated offset added on top of the interval, the same offset - can't be used twice in a row. - -The actual interval can be anywhere between a half of the defined interval and a -half above the interval. For example, for a user defined interval of 15 seconds -the actual interval can be anywhere between 7.5 and 22.5. The interval is -re-generated for every sampling run instead of being generated once and re-used -for the duration of the process' lifetime. - -[influxdb]: https://influxdata.com/time-series-platform/influxdb/ -[influxdb-udp]: https://docs.influxdata.com/influxdb/v0.9/write_protocols/udp/ -[grafana]: http://grafana.org/ +This document was moved to [administration/monitoring/performance/introduction](../../administration/monitoring/performance/introduction.md). |