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
14.995.009,544367  64% 6% 39% 5%
15.045.059,440367  3% 5% 2% 100%
15.035.049,452367  2% 7% 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, 15 Oct 2018 12:58:21 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“
2.89s to complete and log all make actions

COMMAND LINE:
./iobench.nuitka_run 1

PROGRAM OUTPUT NOT CHECKED:
<compiled_function fread at 0x7f58315164a8> 100 bytes, 0.60us per write
<compiled_function fwrite at 0x7f5831516828> 100 bytes, 0.62us per write
<compiled_function fread at 0x7f58315164a8> 1000 bytes, 0.69us per write
<compiled_function fwrite at 0x7f5831516828> 1000 bytes, 0.70us per write
<compiled_function fread at 0x7f58315164a8> 10000 bytes, 1.12us per write
<compiled_function fwrite at 0x7f5831516828> 10000 bytes, 0.87us per write
<compiled_function file_read at 0x7f58315163c8> 100 bytes, 0.21us per write
<compiled_function file_write at 0x7f5831516588> 100 bytes, 0.20us per write
<compiled_function file_read at 0x7f58315163c8> 1000 bytes, 0.73us per write
<compiled_function file_write at 0x7f5831516588> 1000 bytes, 0.45us per write
<compiled_function file_read at 0x7f58315163c8> 10000 bytes, 4.25us per write
<compiled_function file_write at 0x7f5831516588> 10000 bytes, 1.41us per write

Revised BSD license

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