Make Gitaly more prominent in the performance bar

This is as important as SQL timings, and much more important most of the time
than GC, Redis, or Sidekiq.

config/initializers/peek.rb

@@ -16,11 +16,11 @@ else
 end
 
 Peek.into PEEK_DB_VIEW
+Peek.into Peek::Views::Gitaly
+Peek.into Peek::Views::Rblineprof
 Peek.into Peek::Views::Redis
 Peek.into Peek::Views::Sidekiq
-Peek.into Peek::Views::Rblineprof
 Peek.into Peek::Views::GC
-Peek.into Peek::Views::Gitaly
 
 # rubocop:disable Naming/ClassAndModuleCamelCase
 class PEEK_DB_CLIENT

doc/administration/monitoring/performance/performance_bar.md

@@ -11,10 +11,12 @@ It allows you to see (from left to right):
 - the timing of the page (backend, frontend)
 - time taken and number of DB queries, click through for details of these queries
 ![SQL profiling using the Performance Bar](img/performance_bar_sql_queries.png)
-- time taken and number of calls to Redis
-- time taken and number of background jobs created by Sidekiq
+- time taken and number of [Gitaly] calls, click through for details of these calls
+![Gitaly profiling using the Performance Bar](img/performance_bar_gitaly_calls.png)
 - profile of the code used to generate the page, line by line for either _all_, _app & lib_ , or _views_. In the profile view, the numbers in the left panel represent wall time, cpu time, and number of calls (based on [rblineprof](https://github.com/tmm1/rblineprof)).
 ![Line profiling using the Performance Bar](img/performance_bar_line_profiling.png)
+- time taken and number of calls to Redis
+- time taken and number of background jobs created by Sidekiq
 - time taken and number of Ruby GC calls
 
 ## Enable the Performance Bar via the Admin panel
@@ -39,3 +41,5 @@ You can toggle the Bar using the same shortcut.
 ![GitLab Performance Bar Admin Settings](img/performance_bar_configuration_settings.png)
 
 ---
+
+[Gitaly]: ../../gitaly/index.md