Want to write faster programs? Start with the backbone of performance: the memory allocator Last year, @apas.tel took us deep into an often overlooked topic and made it impossible to forget. Watch it again👇🏼

What’s faster in Rust? 🦀 Your instinct says one thing. The benchmark says something else. @apas.tel and @adriencaccia.bsky.social are bringing a live Rust performance quiz to #EuroRust25. You don’t want to miss it! 🧵1/3

Announcing p99.chat, the assistant for software performance optimization 🚀 Describe your performance challenge, share your code, and p99 will analyze, instrument, and visualize the results, cutting the traditional setup overhead down to seconds!

We’re at @pyconit.bsky.social with @adriencaccia.bsky.social! We’ll quizz you on Python performance again tomorrow! See you in room lasagna at 11:45!

🦀 @apas.tel - The Impact of Memory Allocators on Performance Memory allocators are often overlooked. But Arthur makes the case that they’re a key lever for performance in Rust. Learn how they work and when to care. 🧵 5/11 📺 Watch: youtu.be/pJ-FRRB5E84

We just improved our C++ integration. Now with first-class Bazel support for larger projects! codspeed.io/changelog/20...

We just released support for C++ benchmarks, enabling the use of our google benchmark compatibility layer to measure the performance of C++ codebases! Learn more: codspeed.io/changelog/20...

Super excited about our latest changes to make performance testing more accessible! Two significant changes: ✅ The Free plan now includes private repositories (up to 5 users) ✅ Macro Runners are now globally available (bare-metal ARM64, 16 cores, 32GB RAM) with 120 min/month included for free

We now support sharded benchmark execution to provide even faster performance feedback!

Single-core performance gains have largely plateaued. That means no more relying on “free” hardware speed boosts. CPUs haven't stopped improving, but we must actively tap into new architectures. Concurrency, SIMD, and thoughtful optimizations can still unlock impressive speedups.

`x * x` generates exactly the same assembly as `x.pow(2)` in Rust and this goes even beyond powers of 2, thanks to LLVM loop unrolling and exponentiation by squaring.

https://codspeed.io is pretty cool and class creation will be 38–52% faster in attrs 25.2.0 https://github.com/python-attrs/attrs/pull/1407

The big issue with such an approach is that the instrumentation is limited to the interpreter itself while for native binary instrumentation the boundary is system calls and only the user space can be instrumented.

We just released a Divan 🛋️ integration. So far, this is the best developer experience you can hope for building performance tests in Rust 🦀! codspeed.io/changelog/20...

Started hacking on a small TUI for managing EC2 instances and SSH connections. Can’t wait to ditch AWS Console's clunkiness.

For languages running on a VM (Python, Java, JS, etc.), performance instrumentation should happen at the VM level. Execution environments vary, but the interpreter is the single source of truth for performance behavior.

Lets go! I’ll be in Pittsburgh again in may for PyCon US 2025! Super excited to try a new interactive talk format this year!

We've just released some new changes, improving the UX for large-scale results display and sharing results when there are many benchmarks! Check out the demos:

Day 3 of the Advent of CodSpeed is done! You can still be a part of it and test your code's performance against the other participants at codspeed.io/advent

[Sponsored post] This December, @codspeed.io is hosting an epic Rust Performance Leaderboard for the Advent of Code! 🦀 The fastest solutions win amazing prizes like a MacBook, Nintendo Switch, and more! ➡️ codspeed.io/advent #rust #rustlang #eurorust24 #adventofcode #codspeed #programming

It's a wrap for Day 1 of the Advent of CodSpeed. We saw a lot of interesting optimizations and ideas. Let's continue pushing through this advent month! 🎄

This December, we’re giving away a MacBook Air, a Nintendo Switch, and more! 🎁 Want in? Write the fastest Rust solutions to Advent of Code problems and make it to the top of the leaderboard. codspeed.io/advent

We have a new instrument out there!

After so much requests, I'm so excited to have this one out :)

Really excited about this first launch! It's been a long time we wanted to rework the whole app and we're really thrilled to release this!

We finally setup @astro.build on CodSpeed! Here's the benchmarks: codspeed.io/withastro/as...

A new video! Dive into memory allocation with @art049.bsky.social from @codspeed.bsky.social . Learn why stack, heap, and static memory aren’t all created equal, and how the right choices can boost your Rust app’s performance 🦀 📹👉 youtu.be/pJ-FRRB5E84 #rustlang #performance #memoryallocation