A study on Gas Optimization and Performance Evaluation of Sui and Aptos blockchains

Sui and Aptos are two rapidly growing blockchains. They get millions of transactions per day, and their DeFi TVLs (Total Value Locked) are among top ranked blockchains. They provide strong security, scalability, reliability, and verifiability comparing to other popular blockchains like Ethereum. They both use the Move smart contract language, but each one has added a different set of features and models to this language. While both Sui Move and Aptos Move introduce objects to store collections of data, Sui Move supports a variety of object-centric models, such as wrapped objects, dynamic fields, and dynamic collections, which are not introduced in Aptos Move. These strong features provide extensive scalability and endless possibilities for innovations. Due to all these facts, the Sui’s technology is being widely adopted by top-tier developers and leading projects. However, there is no research that analytically compares the performances of smart contracts developed in these two blockchains. In this research, we mainly focus on the features that are shared between Sui Move and Aptos Move. We introduce optimization patterns that save transaction fees in both blockchains and analyze their efficiencies in both Sui and Aptos. Our analysis showed that our introduced optimization patterns can effectively reduce the transaction fees on both Sui and Aptos. We also evaluated the performances of Sui and Aptos on object and non-object models. Our results demonstrated that the Sui object models efficiently reduce the transaction fees by 40-69% comparing to non-object models but equivalent Aptos Move object models perform less efficient.