performance measurements

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

 N  CPU secs Elapsed secs Memory KB Code B ≈ CPU Load
15.065.079,904367  1% 6% 0% 100%
15.185.189,916367  0% 5% 0% 100%
15.075.089,728367  1% 6% 1% 100%

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 Nuitka program source code

import os, time

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

def fwrite(repetitions, size):
    fd = os.open("/dev/null", os.O_WRONLY)
    for i in range(repetitions):
        os.write(fd, b" " * size)

def fread(repetitions, size):
    fd = os.open("/dev/full", os.O_RDONLY)
    for i in range(repetitions):
        os.read(fd, size)

def file_write(repetitions, size):
    f = open("/dev/null", "w")
    for i in range(repetitions):
        f.write(" " * size)
    f.flush()

def file_read(repetitions, size):
    f = open("/dev/full")
    for i in range(repetitions):
        f.read(size)

if __name__ == '__main__':
    measure(fread, 1000000, 100)
    measure(fwrite, 1000000, 100)
    measure(fread, 1000000, 1000)
    measure(fwrite, 1000000, 1000)
    measure(fread, 100000, 10000)
    measure(fwrite, 100000, 10000)
    measure(file_read, 1000000, 100)
    measure(file_write, 1000000, 100)
    measure(file_read, 1000000, 1000)
    measure(file_write, 1000000, 1000)
    measure(file_read, 100000, 10000)
    measure(file_write, 100000, 10000)

 make, command-line, and program output logs

Mon, 29 Apr 2019 21:23:30 GMT

MAKE:
make[1]: Vstupuje se do adresáře „/home/dundee/workspace/benchmarksgame/bencher/tmp/iobench/tmp“
nuitka3 --remove-output iobench.nuitka
cp iobench.nuitka.bin iobench.nuitka_run
make[1]: Opouští se adresář „/home/dundee/workspace/benchmarksgame/bencher/tmp/iobench/tmp“
3.37s to complete and log all make actions

COMMAND LINE:
./iobench.nuitka_run 1

PROGRAM OUTPUT NOT CHECKED:
<compiled_function fread at 0x7fc4dc914748> 100 bytes, 0.58us per write
<compiled_function fwrite at 0x7fc4dc914ac8> 100 bytes, 0.61us per write
<compiled_function fread at 0x7fc4dc914748> 1000 bytes, 0.70us per write
<compiled_function fwrite at 0x7fc4dc914ac8> 1000 bytes, 0.69us per write
<compiled_function fread at 0x7fc4dc914748> 10000 bytes, 1.12us per write
<compiled_function fwrite at 0x7fc4dc914ac8> 10000 bytes, 0.83us per write
<compiled_function file_read at 0x7fc4dc914668> 100 bytes, 0.21us per write
<compiled_function file_write at 0x7fc4dc914828> 100 bytes, 0.29us per write
<compiled_function file_read at 0x7fc4dc914668> 1000 bytes, 0.76us per write
<compiled_function file_write at 0x7fc4dc914828> 1000 bytes, 0.46us per write
<compiled_function file_read at 0x7fc4dc914668> 10000 bytes, 4.06us per write
<compiled_function file_write at 0x7fc4dc914828> 10000 bytes, 1.41us per write

Revised BSD license

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