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September 9, 2023 16:26
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Benchmark for CRC16 x25/IBM-SDLC/ISO-HDLC Python libraries
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| # Benchmark for CRC16 x25/IBM-SDLC/ISO-HDLC libraries | |
| import crccheck.crc | |
| import fastcrc | |
| import scat.util | |
| import libscrc | |
| import crcelk | |
| import timeit | |
| import random | |
| def testDmCrc16(iterations, size): | |
| random_bytes = random.randbytes(size) | |
| for i in range(iterations): | |
| scat.util.dm_crc16(random_bytes) | |
| def testCrcElk(iterations, size): | |
| random_bytes = random.randbytes(size) | |
| for i in range(iterations): | |
| crcelk.CRC_HDLC.calc_bytes(random_bytes) | |
| def testCrcCheck(iterations, size): | |
| random_bytes = random.randbytes(size) | |
| for i in range(iterations): | |
| crccheck.crc.Crc16X25.calc(random_bytes) | |
| def testLibscrc(iterations, size): | |
| random_bytes = random.randbytes(size) | |
| for i in range(iterations): | |
| libscrc.x25(random_bytes) | |
| def testFastCrc(iterations, size): | |
| random_bytes = random.randbytes(size) | |
| for i in range(iterations): | |
| fastcrc.crc16.ibm_sdlc(random_bytes) | |
| def self_test(): | |
| input = b'123456789' | |
| oracle = 0x906E | |
| crc_fromDmCrc16 = scat.util.dm_crc16(input) | |
| crc_fromCrcElk = crcelk.CRC_HDLC.calc_bytes(input) | |
| crc_fromCrcCheck = crccheck.crc.Crc16IsoHdlc.calc(input) | |
| crc_fromLibscrc = libscrc.x25(input) | |
| crc_fromFastCrc = fastcrc.crc16.ibm_sdlc(input) | |
| assert crc_fromDmCrc16 == oracle | |
| assert crc_fromCrcElk == oracle | |
| assert crc_fromCrcCheck == oracle | |
| assert crc_fromLibscrc == oracle | |
| assert crc_fromFastCrc == oracle | |
| self_test() | |
| sizes = [8, 64, 512, 4096] | |
| # Use iterations > 1 to reduce random.randbytes overhead | |
| iterations = 100 | |
| number = 1000 | |
| for i in sizes: | |
| print(f'{iterations} * {number} iterations, size {i}') | |
| elapsedTime = timeit.timeit( | |
| f"testDmCrc16({iterations}, {i})", number=number, globals=locals()) | |
| print(f'dm_crc16: {round(elapsedTime * 1000)}ms') | |
| if (i < 512): | |
| # crcelk and crc_check are too slow | |
| elapsedTime = timeit.timeit( | |
| f"testCrcElk({iterations}, {i})", number=number, globals=locals()) | |
| print(f'crcelk: {round(elapsedTime * 1000)}ms') | |
| elapsedTime = timeit.timeit( | |
| f"testCrcCheck({iterations}, {i})", number=number, globals=locals()) | |
| print(f'crccheck: {round(elapsedTime * 1000)}ms') | |
| elapsedTime = timeit.timeit( | |
| f"testLibscrc({iterations}, {i})", number=number, globals=locals()) | |
| print(f'libscrc: {round(elapsedTime * 1000)}ms') | |
| elapsedTime = timeit.timeit( | |
| f"testFastCrc({iterations}, {i})", number=number, globals=locals()) | |
| print(f'fastcrc: {round(elapsedTime * 1000)}ms') | |
| print() |
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