diff options
| -rwxr-xr-x | benchmark/proto/compare_sizes.py | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/benchmark/proto/compare_sizes.py b/benchmark/proto/compare_sizes.py index b8b79bb9..b6936df6 100755 --- a/benchmark/proto/compare_sizes.py +++ b/benchmark/proto/compare_sizes.py @@ -13,6 +13,7 @@ def sizeof_fmt(num): return "%3.1f%s" % (num, unit) num /= 1024.0 +total_raw_can_size = 0 total_raw_json_size = 0 total_raw_binary_size = 0 total_translated_json_size = 0 @@ -26,6 +27,9 @@ for trace_file in sys.argv[1:]: continue if 'id' and 'data' in json_message: + # rough approx. that CAN messages are 10 bytes - they could be less + # but most of ours are full 64+11 bits + total_raw_can_size += 10 total_raw_json_size += len(line) binary_message = openxc_pb2.RawMessage() binary_message.message_id = json_message['id'] @@ -45,6 +49,7 @@ for trace_file in sys.argv[1:]: print("For the %d trace files given..." % len(sys.argv[1:])) +print("Total transferred raw CAN size is %s" % sizeof_fmt(total_raw_can_size)) print("Total transferred raw JSON size is %s" % sizeof_fmt(total_raw_json_size)) print("Total transferred raw binary size is %s" % sizeof_fmt(total_raw_binary_size)) print("Total transferred translated JSON size is %s" % @@ -57,9 +62,16 @@ print("Total transferred JSON size is %s" % sizeof_fmt(total_json_size)) total_binary_size = total_raw_binary_size + total_translated_binary_size print("Total transferred binary size is %s" % sizeof_fmt(total_binary_size)) -print("Binary encoding is %f%% smaller than JSON for raw messages" % ( - 100 - (total_raw_binary_size / total_raw_json_size * 100))) -print("Binary encoding is %f%% smaller than JSON for translated messages" % ( - 100 - (total_translated_binary_size / total_translated_json_size * 100))) +if total_raw_can_size > 0: + print("Binary encoding adds %f%% overhead to raw CAN messages" % ( + total_raw_binary_size / total_raw_can_size * 100 - 100)) + print("JSON encoding adds %f%% overhead to raw CAN messages" % ( + total_raw_json_size / total_raw_can_size * 100 - 100)) +if total_raw_json_size > 0: + print("Binary encoding is %f%% smaller than JSON for raw messages" % ( + 100 - (total_raw_binary_size / total_raw_json_size * 100))) +if total_translated_json_size > 0: + print("Binary encoding is %f%% smaller than JSON for translated messages" % ( + 100 - (total_translated_binary_size / total_translated_json_size * 100))) print("Binary encoding is %f%% smaller than JSON overall" % ( 100 - (total_binary_size / total_json_size * 100))) |