**Benchmark setup**

.. code-block:: python

    from pandas_vb_common import *
    
    data = dict((i,dict((j,float(j)) for j in xrange(100))) for i in xrange(2000))
    

**Benchmark statement**

.. code-block:: python

    DataFrame(data)

**Performance graph**

.. image:: vbench/figures/frame_ctor_nested_dict_int64.png
   :width: 6in