Hello, everybody.
I would like to detail some moments about protobuf arena.
In my project there is a structure with ~100 fields.
I compared elapsed time for parse and serialize methods with arena and
without it.
1.Arena:
....
google::protobuf::Arena arena;
ProtoStruct message =
google::protobuf::Arena::CreateMessage<ProtoType>(&arena);
while (is_testing) {
packet.ParseFromArray(...)
...read fields, change fields
message.SerializeToArray(...);
}
2.No arena:
ProtoStruct message
while (is_testing) {
packet.ParseFromArray(...)
...read fields, change fields
message.SerializeToArray(...);
}
The results didn't show any difference.
I used 3.3.1.189 version and cloned from master branch, which allocates
strings in arena.
>From this topic (https://github.com/google/protobuf/issues/4327)
I see that there is no benefits from arena usage now.
Is It true or I do something wrong?
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