openpilot is an open source driver assistance system. openpilot performs the functions of Automated Lane Centering and Adaptive Cruise Control for over 200 supported car makes and models.
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#!/usr/bin/env python3
import time
from opendbc.can import CANPacker, CANParser
def _benchmark(checks, n):
parser = CANParser('toyota_new_mc_pt_generated', checks, 0)
packer = CANPacker('toyota_new_mc_pt_generated')
t1 = time.process_time_ns()
can_msgs = []
for i in range(10000):
values = {"ACC_CONTROL": {"ACC_TYPE": 1, "ALLOW_LONG_PRESS": 3}}
msgs = [packer.make_can_msg(k, 0, v) for k, v in values.items()]
can_msgs.append([int(0.01 * i * 1e9), msgs])
t2 = time.process_time_ns()
pack_dt = t2 - t1
ets = []
for _ in range(25):
if n > 1:
strings = []
for i in range(0, len(can_msgs), n):
strings.append(can_msgs[i:i + n])
t1 = time.process_time_ns()
for m in strings:
parser.update(m)
t2 = time.process_time_ns()
else:
t1 = time.process_time_ns()
for m in can_msgs:
parser.update([m])
t2 = time.process_time_ns()
ets.append(t2 - t1)
et = sum(ets) / len(ets)
avg_nanos = et / len(can_msgs)
print('[%d] %.1fms to pack, %.1fms to parse %s messages, avg: %dns' % (n, pack_dt/1e6, et/1e6, len(can_msgs), avg_nanos))
if __name__ == "__main__":
# python -m cProfile -s cumulative benchmark.py
_benchmark([('ACC_CONTROL', 10)], 1)
_benchmark([('ACC_CONTROL', 10)], 5)
_benchmark([('ACC_CONTROL', 10)], 10)