If you're responsible for performance (of a feature, product, or just all the things) at your company and can spare 30 minutes I'd love to have a technical call with you to understand how you do things! 📈 DMs open 📭 Retweets appreciated 🙏

Me and ⁦@JesperBrouer⁩ wrote a blog post on the kernel’s BPF LPM trie implementation and cover some of the performance gotchas with the current code.

Full report for yesterday’s Google outage - not feature flagging a new code path - null pointer crashing a binary when reading empty fields from Spanner - remediation causing a thundering herd as there was no exponential backoff - which required manual throttling to recover from

we are looking for a p99 engineer to work on infra/autoscaling/k8s tooling for the 10s of clusters (soon 100s) we run across all 3 clouds. dm me

Req merging seems incidental. Disabling merges doesn’t help

Wondering if @axboe has any pro tips on tracking down the cause of increased write latency (higher w_await time) when moving from 6.6 to 6.12? I'm seeing a 10x increase and more request merging happening.

Practical Benchmarking: How To Detect Performance Changes in Noisy Results https://t.co/tWpFii3uNc by @fleming_matt

Happy to announce we're growing our team 🚀 We're looking for folks to help us build out our backend infrastructure. If Golang is your native tongue, and distributed systems, system admin and high performance/efficiency are your cup of tea (or coffee!) please apply. Come on over

João Lima & @fleming_matt will explain the design & architecture of Cloudflare's boot infrastructure, the decisions made to help it scale, & how it allows customization while maintaining trust. Don't miss this one at Monster Scale Summit! https://t.co/BQK01zq6ir #ScyllaDB

I've been catching up on CS papers from the past six months, and wow...DBLP is so awesome. It makes it so easy to find all of the papers in a single place. Great example from Networked Systems Design and Implementation (NSDI): https://t.co/RUKcgoOQq6

Uncached buffered IO is back, after a 5 year hiatus. Simpler and cleaner now. Up to 65-75% improvement, at half the CPU usage on my system. And none of the nonsense of the unpredictability of the page cache. See commit 1 and 3 for read/write perf data. https://t.co/e9BNuAWAyo

I presented my talk on "Deterministic Simulation Testing" yesterday. If you missed the stream, here's a recording: https://t.co/vJ9JCtAhck Thanks @bebraw and @Future_Frontend for co-organizing and the awesome audience for first Systems from HEL!

AI Flame Graphs: Showing what's actually running on the HW and how we got there. Uses Intel EU stall profiling and eBPF. https://t.co/zIkkBG5nly

Last chance to submit papers to the International Conference on #Performance Engineering (#ICPE2025 - May 5-9, 2025 in Toronto ) - the deadline is Nov 01, 2024 for both the Research and Industry tracks . Please check https://t.co/8RIbpH1xnU for details.

We are seeking a skilled Linux Kernel Security Expert to join our world class kernel team. Apply now and make a difference: https://t.co/RrRjpqQW7M #LinuxJobs #SUSE #Hiring

The essence of software optimisation explained in a single tweet.

sch_ext is the feature I’m most excited about in Linux 6.12

I'm glad my small contribution, which may help more people start using @Nyrkio, was accepted and merged. Thank you, @h_ingo and @fleming_matt! https://t.co/zWX9wF3pWq https://t.co/D7duEWZAjR

Nice talk about spotting performance regressions with change point detection from @fleming_matt at #p99conf

This is happening right now. Im also on the live chat for Q&A

How to Deploy Nyrkiö Locally Using #Docker A Step-by-Step #Guide to Help You Get the Application Up and Running #Performance #Testing @Docker @nyrkio https://t.co/zWX9wF3pWq