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
114.7314.7380,864370  0% 0% 100% 0% 0% 0% 1% 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, 09 Sep 2022 06:01:49 GMT

COMMAND LINE:
 /usr/bin/pypy iobench.pypy 1

PROGRAM OUTPUT NOT CHECKED:
fread 100 bytes, 0.24us per write
fwrite 100 bytes, 0.16us per write
fread 1000 bytes, 0.29us per write
fwrite 1000 bytes, 0.16us per write
fread 10000 bytes, 0.71us per write
fwrite 10000 bytes, 0.16us per write
file_read 100 bytes, 0.05us per write
file_write 100 bytes, 0.03us per write
file_read 1000 bytes, 0.17us per write
file_write 1000 bytes, 0.07us per write
file_read 10000 bytes, 1.74us per write
file_write 10000 bytes, 0.37us per write

Revised BSD license

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