PERF: add asv benchmarks for .dot()

Author: qwhelan

asv_bench/benchmarks/binary_ops.py

@@ -52,6 +52,8 @@ def setup(self):
                                                    np.iinfo(np.int16).max,
                                                    size=(N, N)))
 
+        self.s = Series(np.random.randn(N))
+
     # Division
 
     def time_frame_float_div(self):
@@ -74,6 +76,17 @@ def time_frame_int_mod(self):
     def time_frame_float_mod(self):
         self.df % self.df2
 
+    # Dot product
+
+    def time_frame_dot(self):
+        self.df.dot(self.df2)
+
+    def time_series_dot(self):
+        self.s.dot(self.s)
+
+    def time_frame_series_dot(self):
+        self.df.dot(self.s)
+
 
 class Timeseries(object):