Fix strange NoMemoryError on amd64. Closes #10442 [wrb]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@8355 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/lib/action_controller/benchmarking.rb

@@ -79,15 +79,16 @@ def perform_action_with_benchmark
       end
 
       def rendering_runtime(runtime)
-        " | Rendering: #{sprintf("%.5f", @rendering_runtime)} (#{sprintf("%d", (@rendering_runtime * 100) / runtime)}%)"
+        percentage = @rendering_runtime * 100 / runtime
+        " | Rendering: %.5f (%d%%)" % [@rendering_runtime, percentage.to_i]
       end
 
       def active_record_runtime(runtime)
         db_runtime    = ActiveRecord::Base.connection.reset_runtime
         db_runtime    += @db_rt_before_render if @db_rt_before_render
         db_runtime    += @db_rt_after_render if @db_rt_after_render
-        db_percentage = (db_runtime * 100) / runtime
-        " | DB: #{sprintf("%.5f", db_runtime)} (#{sprintf("%d", db_percentage)}%)"
+        db_percentage = db_runtime * 100 / runtime
+        " | DB: %.5f (%d%%)" % [db_runtime, db_percentage.to_i]
       end
   end
-end
\ No newline at end of file
+end