pandas vs modin in fillna datasets system: i5-6400 24gb ram 2400mhz samsung 860 evo ssd gtx 10603gb import time import pandas as pd df = pd.read_csv("esea_master_dmg_demos.part1.csv") s = time.time() df = df.fillna(value=0) e = time.time() print("Pandas Concat Time = {}".format(e-s)) Pandas Concat Time = 4.92685341835022 del df import modin.pandas as pd df = pd.read_csv("esea_master_dmg_demos.part1.csv") s = time.time() df = df.fillna(value=0) e = time.time() print("Modin Loading Time = {}".format(e-s)) Modin Loading Time = 0.009033441543579102