Add a Gitlab::Profiler.print_by_total_time convenience method

This method uses Gitlab::Profiler::TotalTimeFlatPrinter internally, which is the
same as RubyProf::FlatPrinter, but the min_percent option (and new max_percent
option) applies to the _total_ time, not the _self_ time. This helps us figure
out if we're calling a library inefficiently, for instance.

1 files changed, 6 insertions, 0 deletions

diff --git a/lib/gitlab/profiler.rb b/lib/gitlab/profiler.rb
index ecff6ab5d5e..c5bb4648572 100644
--- a/lib/gitlab/profiler.rb
+++ b/lib/gitlab/profiler.rb
@@ -146,5 +146,11 @@ module Gitlab
         logger.info("#{model} total (#{query_count}): #{time.round(2)}ms")
       end
     end
+
+    def self.print_by_total_time(result, options = {})
+      default_options = { sort_method: :total_time }
+
+      Gitlab::Profiler::TotalTimeFlatPrinter.new(result).print(STDOUT, default_options.merge(options))
+    end
   end
 end