speedtest_parallel.py

#!/usr/bin/env python

import os
import sys
import random
import time
import filecmp

random.seed(1234)

PATHS = ["/mnt/gdrive/large_random_file",
         "/mnt/gdrive2/large_random_file",
         "/mnt/gdrive3/large_random_file"]         
CHUNK_SIZE = 16*1024
CHUNKS_READ_COUNT = 400

fhs = []
counter = 0

for path in PATHS:
    fhs.append(os.open(path, os.O_RDONLY))

counter = 0
size = os.path.getsize(PATHS[0])
readData = b''

start = time.time()
for _ in range(CHUNKS_READ_COUNT):
    os.lseek(fhs[counter], random.randrange(size-CHUNK_SIZE), os.SEEK_SET)
    readData += os.read(fhs[counter], CHUNK_SIZE)
    counter += 1
    counter %= len(PATHS)
end = time.time()

execution = end - start
print("Finished. Took {} seconds. Average {} reads per second".format(
    execution, CHUNKS_READ_COUNT / execution))