Maximising Throughput & Minimising Latency in High-Performance C++ Code - Julius Zukauskas ACCU 2025

ACCU Membership: https://tinyurl.com/ydnfkcyn
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Maximising Throughput and Minimising Latency in High-Performance C++ Code - Julius Zukauskas - ACCU 2025
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Learn how to write high-performance C++ code by maximising throughput while minimising latency. In this talk, we explore how software performance is influenced not just by code, but by how data is structured and accessed — a critical but often overlooked aspect of system performance tuning.

If you're a developer interested in C++ performance, data oriented design, or cache optimization, this video dives into real-world techniques for improving memory layout and reducing CPU cache misses. You'll see why poor data modeling can hinder throughput and how choosing the right data access patterns can dramatically boost performance.

We'll walk through the common pitfalls in C++ code design that lead to slow, clunky systems and offer practical alternatives rooted in hardware-aware programming. From understanding the difference between struct of arrays vs array of structs to leveraging vectorized transformations and better cache utilization, you'll leave with actionable insights for optimizing C++ code in performance-critical applications.

Whether you're building low latency systems, optimizing C++ data structures, or simply looking to sharpen your system performance tuning skills, this session gives you a solid foundation in pragmatic programming techniques that balance abstraction and raw speed.

Key topics include:
Data oriented design in C++
Memory layout strategies
CPU cache utilization tips
Code and data transformation
High-performance systems thinking
Scalable software design principles

Engineering performance isn't just fun — it's essential. Watch now to learn how to write better, faster, and smarter C++ code.

Chapters
0:00 - Intro: Why Performance Matters
0:24 - Real-World Impact of Latency
1:03 - Common C++ Data Modeling Patterns
1:54 - Why Standard Object-Oriented Design Slows You Down
2:22 - Pull-Based Transformation: Pros and Cons
3:05 - A Hybrid Performance-First Approach
3:54 - Optimizing Cache Usage with Vectorized Data
4:36 - Takeaways on Data, Hardware, and Simplicity
4:57 - Closing Thoughts

Slides: https://accu.org/conf-previous/accu2025/

Join think-cell as a C++ Developer and work on cutting-edge challenges with a focus on code excellence, innovation, and working alongside an international team of experts — apply now to be part of a team shaping the future of business presentations. https://www.think-cell.com/en/career
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Julius Zukauskas

I am a software engineer with a passion for all things performance.

Video Sponsored By JetBrains
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The ACCU Conference is the annual conference of the ACCU membership, but is open to any and all who wish to attend. The tagline for the ACCU is 'Professionalism in Programming', which captures the whole spectrum of programming languages, tools, techniques and processes involved in advancing our craft. While there remains a core of C and C++ - with many members participating in respective ISO standards bodies - the conference, like the organisation, embraces other language ecosystems and you should expect to see sessions on C#, D, F#, Go, Javascript, Haskell, Java, Kotlin, Lisp, Python, Ruby, Rust, Swift and more.The ACCU Conference is a conference by programmers for programmers about programming.
Discounted rates for members.
ACCU Membership: https://tinyurl.com/ydnfkcyn
2025 Program: https://accu.org/conf-previous/accu2025/
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