node_buffer_issue_python_script

node_buffer_issue_python_script.py

import sys
from time import sleep

# numBytes = 2 ** 29
# sys.stdout.write("a" * numBytes)
# only one flush

# sys.stdout.write("a")
# sys.stdout.flush()
# sleep(0.000000000000001)
# less than a picosecond, nonsense number. But the ~6ms it takes to invoke sleep and return is enough delay for node to process flush
# sys.stdout.write("aa")
# sys.stdout.flush()
# this block results in two flushes

# for i in range(8192 * 2 + 2):
#    sys.stdout.write("a")
# 2 flushes

# for i in range(2):
#     sys.stdout.write("a" * (8192 + 1))
# two flushes

# sys.stdout.write("a" * (8192 + 1))
# sys.stdout.write("a" * (8192 + 1))
# two flushes

sys.stdout.write("a" * (8192 * 2 + 2))
# one flush

sleep(3)
print("done")