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

 performance measurements

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

 N  CPU secs Elapsed secs Memory KB Code B ≈ CPU Load
112.1812.2477,048370  38% 4% 3% 3% 67% 4% 3% 3%

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

Read iobench benchmark to see what this program should do.

 notes

 iobench PyPy program 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

 Thu, 06 May 2021 22:21:00 GMT

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

PROGRAM OUTPUT NOT CHECKED:
fread 100 bytes, 0.17us per write
fwrite 100 bytes, 0.11us per write
fread 1000 bytes, 0.22us per write
fwrite 1000 bytes, 0.11us per write
fread 10000 bytes, 0.66us per write
fwrite 10000 bytes, 0.12us per write
file_read 100 bytes, 0.05us per write
file_write 100 bytes, 0.03us per write
file_read 1000 bytes, 0.19us per write
file_write 1000 bytes, 0.07us per write
file_read 10000 bytes, 1.57us per write
file_write 10000 bytes, 0.33us per write

Revised BSD license

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