Is it more efficient to use boost::asio::basic_stream_socket::async_read_some instead of boost::asio::async_read?

Question

Is it better to use boost::asio::basic_stream_socket::async_read_some instead of boost::asio::async_read when it comes to high performance data throughput?

Answer 1

boost::asio::async_read is a composed operation, which is well described in the documentation

This operation is implemented in terms of zero or more calls to the stream's async_read_some function, and is known as a composed operation. The program must ensure that the stream performs no other read operations (such as async_read, the stream's async_read_some function, or any other composed operations that perform reads) until this operation completes.

any performance conclusions should be based on empirical data depending on your application.