pandas7754_resample_perf.ipynb

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      "100 loops, best of 3: 10.4 ms per loop\n",
      "100 loops, best of 3: 10.2 ms per loop\n"
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   "source": [
    "# https://github.com/pydata/pandas/issues/7754\n",
    "import pandas as pd\n",
    "\n",
    "intSeries = pd.Series(5, pd.date_range(start='2000-01-01', end='2000-01-05', freq='555000U'), dtype='int64')\n",
    "timeSeries = intSeries.astype('datetime64[ns]')\n",
    "\n",
    "%timeit intSeries.resample('1S', how='last') # It took 464 func calls (455 primitive calls) in 0.013 secs without the fix\n",
    "%timeit timeSeries.resample('1S', how='last') # It took 12787933 func calls (12442313 primitive calls) in 12.516 secs without the fix"
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