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 |
|---|---|---|---|---|---|
| 1 | 2.75 | 2.76 | 11,008 | 367 | 100% 0% 0% 0% 0% 0% 1% 0% |
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
Sun, 23 Apr 2023 09:13:38 GMT MAKE: make[1]: Vstupuje se do adresáře „/home/dundee/work/pybenchmarks/bencher/tmp/iobench/tmp“ nuitka3 --remove-output iobench.nuitka Nuitka-Options:INFO: Used command line options: --remove-output iobench.nuitka Nuitka-Options:WARNING: You did not specify to follow or include anything but main program. Check options and make sure that is intended. Nuitka:INFO: Starting Python compilation with Nuitka '1.5' on Python '3.10' commercial grade 'not installed'. Nuitka:INFO: Completed Python level compilation and optimization. Nuitka:INFO: Generating source code for C backend compiler. Nuitka:INFO: Running data composer tool for optimal constant value handling. Nuitka:INFO: Running C compilation via Scons. Nuitka-Scons:INFO: Backend C compiler: gcc (gcc). Nuitka-Scons:INFO: Backend linking program with 7 files (no progress information available). Nuitka-Scons:WARNING: You are not using ccache. Nuitka:INFO: Removing build directory 'iobench.nuitka.build'. Nuitka:INFO: Successfully created 'iobench.nuitka.bin'. cp iobench.nuitka.bin iobench.nuitka_run make[1]: Opouští se adresář „/home/dundee/work/pybenchmarks/bencher/tmp/iobench/tmp“ 14.37s to complete and log all make actions COMMAND LINE: ./iobench.nuitka_run 1 PROGRAM OUTPUT NOT CHECKED: <compiled_function fread at 0x7f92ce7a7b50> 100 bytes, 0.35us per write <compiled_function fwrite at 0x7f92ce7a7880> 100 bytes, 0.31us per write <compiled_function fread at 0x7f92ce7a7b50> 1000 bytes, 0.42us per write <compiled_function fwrite at 0x7f92ce7a7880> 1000 bytes, 0.37us per write <compiled_function fread at 0x7f92ce7a7b50> 10000 bytes, 0.53us per write <compiled_function fwrite at 0x7f92ce7a7880> 10000 bytes, 0.41us per write <compiled_function file_read at 0x7f92ce7a7d30> 100 bytes, 0.13us per write <compiled_function file_write at 0x7f92ce7a7c40> 100 bytes, 0.11us per write <compiled_function file_read at 0x7f92ce7a7d30> 1000 bytes, 0.40us per write <compiled_function file_write at 0x7f92ce7a7c40> 1000 bytes, 0.24us per write <compiled_function file_read at 0x7f92ce7a7d30> 10000 bytes, 2.25us per write <compiled_function file_write at 0x7f92ce7a7c40> 10000 bytes, 0.77us per write