import matplotlib.pyplot as plt
import numpy as np
import time

for i in range(1, 7):
    x = np.random.rand(10**i)
    y = np.random.rand(10**i)
    start = time.time()
    plt.hexbin(x, y)
    end = time.time()
    print(i, end - start)

1 0.07006597518920898
2 0.0029900074005126953
3 0.0072820186614990234
4 0.0190579891204834
5 0.19024014472961426
6 1.8048720359802246

1 0.06623506546020508
2 0.002410888671875
3 0.006618022918701172
4 0.009796142578125
5 0.1008000373840332
6 0.9016518592834473