36 lines
1.3 KiB
Markdown
36 lines
1.3 KiB
Markdown
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# Performance Bar
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A Performance Bar can be displayed, to dig into the performance of a page. When
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activated, it looks as follows:
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![Performance Bar](img/performance_bar.png)
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It allows you to:
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- see the current host serving the page
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- see the timing of the page (backend, frontend)
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- the number of DB queries, the time it took, and the detail of these queries
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![SQL profiling using the Performance Bar](img/performance_bar_sql_queries.png)
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- the number of calls to Redis, and the time it took
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- the number of background jobs created by Sidekiq, and the time it took
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- the number of Ruby GC calls, and the time it took
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- profile the code used to generate the page, line by line
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![Line profiling using the Performance Bar](img/performance_bar_line_profiling.png)
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## Enable the Performance Bar via the Admin panel
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GitLab Performance Bar is disabled by default. To enable it for a given group,
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navigate to the Admin area in **Settings > Profiling - Performance Bar**
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(`/admin/application_settings`).
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The only required setting you need to set is the full path of the group that
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will be allowed to display the Performance Bar.
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Make sure _Enable the Performance Bar_ is checked and hit
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**Save** to save the changes.
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---
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![GitLab Performance Bar Admin Settings](img/performance_bar_configuration_settings.png)
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---
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