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Diffstat (limited to 'doc/administration/gitaly/troubleshooting.md')
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diff --git a/doc/administration/gitaly/troubleshooting.md b/doc/administration/gitaly/troubleshooting.md index fdd281c1a90..ff136b44340 100644 --- a/doc/administration/gitaly/troubleshooting.md +++ b/doc/administration/gitaly/troubleshooting.md @@ -435,6 +435,15 @@ Here are common errors and potential causes: - Praefect cannot reach one or more of its child Gitaly nodes. Try running the Praefect connection checker to diagnose. +### Praefect database experiencing high CPU load + +Some common reasons for the Praefect database to experience elevated CPU usage include: + +- Prometheus metrics scrapes [running an expensive query](https://gitlab.com/gitlab-org/gitaly/-/issues/3796). If you have GitLab 14.2 + or above, set `praefect['separate_database_metrics'] = true` in `gitlab.rb`. +- [Read distribution caching](praefect.md#reads-distribution-caching) is disabled, increasing the number of queries made to the + database when user traffic is high. Ensure read distribution caching is enabled. + ### Determine primary Gitaly node To determine the primary node of a repository: |