diff --git a/activerecord/examples/performance.rb b/activerecord/examples/performance.rb
index 53acd62f47057..eb2342480d698 100755
--- a/activerecord/examples/performance.rb
+++ b/activerecord/examples/performance.rb
@@ -25,7 +25,7 @@
   /tmp/mysql.sock
   /var/mysql/mysql.sock
   /var/run/mysqld/mysqld.sock
-]).find { |path| path.socket? }
+]).find { |path| path.socket? }.to_s
 
 ActiveRecord::Base.establish_connection(conn)
 
@@ -58,7 +58,7 @@ def self.feel(exhibits) exhibits.each { |e| e.feel } end
 sqlfile = "#{__DIR__}/performance.sql"
 
 if File.exists?(sqlfile)
-  mysql_bin = %w[mysql mysql5].select { |bin| `which #{bin}`.length > 0 }
+  mysql_bin = %w[mysql mysql5].detect { |bin| `which #{bin}`.length > 0 }
   `#{mysql_bin} -u #{conn[:username]} #{"-p#{conn[:password]}" unless conn[:password].blank?} #{conn[:database]} < #{sqlfile}`
 else
   puts 'Generating data...'
@@ -88,7 +88,7 @@ def self.feel(exhibits) exhibits.each { |e| e.feel } end
     )
   end
 
-  mysqldump_bin = %w[mysqldump mysqldump5].select { |bin| `which #{bin}`.length > 0 }
+  mysqldump_bin = %w[mysqldump mysqldump5].detect { |bin| `which #{bin}`.length > 0 }
   `#{mysqldump_bin} -u #{conn[:username]} #{"-p#{conn[:password]}" unless conn[:password].blank?} #{conn[:database]} exhibits users > #{sqlfile}`
 end
 
@@ -155,6 +155,40 @@ def self.feel(exhibits) exhibits.each { |e| e.feel } end
     ar { Exhibit.transaction { Exhibit.new } }
   end
 
+  report 'Model.find(id)' do
+    id = Exhibit.first.id
+    ar { Exhibit.find(id) }
+  end
+
+  report 'Model.find_by_sql' do
+    ar { Exhibit.find_by_sql("SELECT * FROM exhibits WHERE id = #{(rand * 1000 + 1).to_i}").first }
+  end
+
+  report 'Model.log', (TIMES * 10) do
+    ar { Exhibit.connection.send(:log, "hello", "world") {} }
+  end
+
+  report 'AR.execute(query)', (TIMES / 2) do
+    ar { ActiveRecord::Base.connection.execute("Select * from exhibits where id = #{(rand * 1000 + 1).to_i}") }
+  end
+
+  report 'Model.find(id)' do
+    id = Exhibit.first.id
+    ar { Exhibit.find(id) }
+  end
+
+  report 'Model.find_by_sql' do
+    ar { Exhibit.find_by_sql("SELECT * FROM exhibits WHERE id = #{(rand * 1000 + 1).to_i}").first }
+  end
+
+  report 'Model.log', (TIMES * 10) do
+    ar { Exhibit.connection.send(:log, "hello", "world") {} }
+  end
+
+  report 'AR.execute(query)', (TIMES / 2) do
+    ar { ActiveRecord::Base.connection.execute("Select * from exhibits where id = #{(rand * 1000 + 1).to_i}") }
+  end
+
   summary 'Total'
 end
 
diff --git a/activesupport/lib/active_support/deprecation.rb b/activesupport/lib/active_support/deprecation.rb
index 151ae5a10a793..36289cfa7efc9 100644
--- a/activesupport/lib/active_support/deprecation.rb
+++ b/activesupport/lib/active_support/deprecation.rb
@@ -52,7 +52,8 @@ def silence
       private
         def deprecation_message(callstack, message = nil)
           message ||= "You are using deprecated behavior which will be removed from the next major or minor release."
-          "DEPRECATION WARNING: #{message}. #{deprecation_caller_message(callstack)}"
+          message += '.' unless message =~ /\.$/
+          "DEPRECATION WARNING: #{message} #{deprecation_caller_message(callstack)}"
         end
 
         def deprecation_caller_message(callstack)