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
1286.89270.093,620370  19% 26% 30% 27% 1% 1% 1% 1%

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 19:20:15 GMT

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

PROGRAM OUTPUT NOT CHECKED:
fread 100 bytes, 0.54us per write
fwrite 100 bytes, 0.89us per write
fread 1000 bytes, 1.52us per write
fwrite 1000 bytes, 4.79us per write
fread 10000 bytes, 12.63us per write
fwrite 10000 bytes, 46.79us per write
file_read 100 bytes, 0.46us per write
file_write 100 bytes, 0.57us per write
file_read 1000 bytes, 1.58us per write
file_write 1000 bytes, 4.61us per write
file_read 10000 bytes, 12.64us per write
file_write 10000 bytes, 46.07us per write

Revised BSD license

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