Python Interpreters Benchmarks
x64 ArchLinux : AMD® Ryzen 7 4700U®

 performance measurements

Each table row shows performance measurements for this program with a particular command-line input value N.

 N  CPU secs Elapsed secs Memory KB Code B ≈ CPU Load
124.8624.866,336370  0% 0% 100% 0% 0% 0% 0% 0%

Read the ↓ make, command line, and program output logs to see how this program was run.

Read  benchmark to see what this program should do.

 notes

  source code

import os, time

def measure(func, num1, num2):
    t0 = time.time()
    func(num1, num2)
    print func.__code__.co_name, "%d bytes, %.2fus per write" % (
        num2, (time.time() - t0) / num1 * 1000 * 1000)

def fwrite(num, num2):
    fd = os.open("/dev/null", os.O_WRONLY)
    for i in xrange(num):
        os.write(fd, " " * num2)

def fread(num, num2):
    fd = os.open("/dev/full", os.O_RDONLY)
    for i in xrange(num):
        os.read(fd, num2)

def file_write(num, num2):
    f = open("/dev/null", "w")
    for i in xrange(num):
        f.write(" " * num2)
    f.flush()

def file_read(num, num2):
    f = open("/dev/full")
    for i in xrange(num):
        f.read(num2)

if __name__ == '__main__':
    measure(fread, 10000000, 100)
    measure(fwrite, 10000000, 100)
    measure(fread, 10000000, 1000)
    measure(fwrite, 10000000, 1000)
    measure(fread, 1000000, 10000)
    measure(fwrite, 1000000, 10000)
    measure(file_read, 10000000, 100)
    measure(file_write, 10000000, 100)
    measure(file_read, 10000000, 1000)
    measure(file_write, 10000000, 1000)
    measure(file_read, 1000000, 10000)
    measure(file_write, 1000000, 10000)

 make, command-line, and program output logs

 Fri, 30 Oct 2020 19:17:58 GMT

COMMAND LINE:
 /usr/bin/python2 iobench.python 1

PROGRAM OUTPUT NOT CHECKED:
fread 100 bytes, 0.29us per write
fwrite 100 bytes, 0.33us per write
fread 1000 bytes, 0.38us per write
fwrite 1000 bytes, 0.39us per write
fread 10000 bytes, 0.75us per write
fwrite 10000 bytes, 0.44us per write
file_read 100 bytes, 0.14us per write
file_write 100 bytes, 0.15us per write
file_read 1000 bytes, 0.28us per write
file_write 1000 bytes, 0.25us per write
file_read 10000 bytes, 0.92us per write
file_write 10000 bytes, 0.54us per write

Revised BSD license

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