diff --git a/lib/stimulus_reflex/instrumentation.rb b/lib/stimulus_reflex/instrumentation.rb
index 332e55c6..b4c42d8a 100644
--- a/lib/stimulus_reflex/instrumentation.rb
+++ b/lib/stimulus_reflex/instrumentation.rb
@@ -6,19 +6,33 @@ def self.track(reflex)
       return yield unless reflex.logger && StimulusReflex.config.instrument_reflexes
 
       events = []
+      start_allocations = current_allocations
 
-      time = Benchmark.realtime do
-        ActiveSupport::Notifications.subscribed(proc { |event| events << event }, /^sql.active_record|^render/) do
+      total_time = Benchmark.ms do
+        ActiveSupport::Notifications.subscribed(proc { |event| events << event }, /^sql.active_record|reflex.render/) do
           yield
         end
       end
 
-      sql, views = events.partition { |e| e.name.match?(/^sql/) }
+      end_allocations = current_allocations
+      sql, rendering = events.partition { |e| e.name.match?(/^sql/) }
 
-      reflex.logger.info "Processed #{reflex.class.name}##{reflex.method_name} in #{(time * 1000).round(1)}ms " \
-        "(Views: #{views.sum(&:duration).round(1)}ms | " \
-        "ActiveRecord: #{sql.sum(&:duration).round(1)}ms | " \
-        "Allocations: #{events.sum(&:allocations)}) \n"
+      reflex.logger.info "Processed #{reflex.class.name}##{reflex.method_name} in #{total_time.round(1)}ms " \
+                           "(Views: #{rendering.sum(&:duration).round(1)}ms | " \
+                           "ActiveRecord: #{sql.sum(&:duration).round(1)}ms | " \
+                           "Allocations: #{end_allocations - start_allocations}) \n"
+    end
+
+    def self.instrument(reflex, event_name)
+      return yield unless reflex.logger && StimulusReflex.config.instrument_reflexes
+
+      ActiveSupport::Notifications.instrument event_name, this: :data do
+        yield
+      end
+    end
+
+    def self.current_allocations
+      GC.stat.key?(:total_allocated_objects) ? GC.stat(:total_allocated_objects) : 0
     end
   end
 end
diff --git a/lib/stimulus_reflex/reflex.rb b/lib/stimulus_reflex/reflex.rb
index 04b7caca..e4071174 100644
--- a/lib/stimulus_reflex/reflex.rb
+++ b/lib/stimulus_reflex/reflex.rb
@@ -118,7 +118,9 @@ def render(*args)
     options = args.extract_options!
     (options[:locals] ||= {}).reverse_merge!(params: params)
     args << options.reverse_merge(layout: false)
-    controller_class.renderer.new(connection.env.merge("SCRIPT_NAME" => "")).render(*args)
+    StimulusReflex::Instrumentation.instrument self, "reflex.render" do
+      controller_class.renderer.new(connection.env.merge("SCRIPT_NAME" => "")).render(*args)
+    end
   end
 
   # Invoke the reflex action specified by `name` and run all callbacks
@@ -154,6 +156,8 @@ def params
   # eg. `morph dom_id(@posts), render_collection(@posts)`
   def render_collection(resource, content = nil)
     content ||= render(resource)
-    tag.div(content.html_safe, id: dom_id(resource).from(1))
+    StimulusReflex::Instrumentation.instrument self, "reflex.render" do
+      tag.div(content.html_safe, id: dom_id(resource).from(1))
+    end
   end
 end