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terryjbates/load_gen.py

Created February 12, 2016 01:17
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Ramping load generator from Sys Perf book
Raw
load_gen.py
#!/usr/bin/env python
import sys
import os
import random
IOSIZE = 8192
QUANTA = IOSIZE
def main():
filename = sys.argv[1]
print(filename)
FILE = os.open(filename, os.O_RDWR)
while True:
os.lseek(FILE, int(random.random() * IOSIZE), 0)
os.read(FILE, IOSIZE)
if __name__ == "__main__":
main()
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