open source driving agent
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#!/usr/bin/env python3
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import cereal.messaging as messaging
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if __name__ == "__main__":
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modeld_sock = messaging.sub_sock("model")
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last_frame_id = None
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start_t = None
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frame_cnt = 0
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dropped = 0
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while True:
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m = messaging.recv_one(modeld_sock)
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if m is None:
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continue
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frame_id = m.model.frameId
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t = m.logMonoTime / 1e9
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frame_cnt += 1
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if start_t is None:
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start_t = t
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last_frame_id = frame_id
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continue
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d_frame = frame_id - last_frame_id
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dropped += d_frame - 1
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expected_num_frames = int((t - start_t) * 20)
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frame_drop = 100 * (1 - (expected_num_frames / frame_cnt))
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print(f"Num dropped {dropped}, Drop compared to 20Hz: {frame_drop:.2f}%")
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last_frame_id = frame_id
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