Performance of Rust Language [pdf]

2026-05-25 | original

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Why This Matters

This article highlights Rust's potential as a safe, low-level programming language that can compete with C++ in terms of performance. Understanding its performance strengths and weaknesses is crucial for developers aiming to adopt Rust for high-performance applications, ultimately influencing the future landscape of system programming. It underscores the importance of best practices to optimize Rust code for maximum efficiency, benefiting both industry and consumers.

Key Takeaways

Rust's performance varies across different code patterns, with identifiable weak spots.
Practical assessments reveal how close Rust can get to C++ performance in real-world scenarios.
Implementing recommended best practices can significantly improve Rust's efficiency in system programming.

Goal

Rust is defined as a safe, low-level, system programming language directly competing with C++.

How much does it pay for safety in terms of performance ? Can we expect similar performance on idiomatic code ?

In this talk we

identify performance weak spots (and strong points) of Rust

check how bad (or good) they are in practice

propose countermeasures / performance best practices

Contents

External links

The talk was delivered at C++Russia 2026 and also published on

Explore topics: rust c++ c++russia system programming performance