How to encode efficiently?

[alanhe]

Hi,

Could you give me some performance advices?

My CPU profile shows that, about 1/4 of CPU the CPU time is spent when I call Message::encode_to_vec to serialize a protobuf object.

From the flame graph, Message::encoded_len and core::ptr::drop_inplace take long time.

What I want is to make HTTP requests via reqwest. I serialize the protobuf object to be the HTTP body.

The prost version is 0.9.0.

Am I doing it right? Are there more efficient ways of do this?