Matt Fleming

A deep dive into BPF LPM trie performance and optimization This post explores the performance of BPF LPM tries, a critical data structure used for IP matching. It delves into the trie algorithm, presents benchmark data, and explains how the current kernel imp...

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

blog.cloudflare.com/a-deep-dive-...

Reducing double spend latency from 40 ms to < 1 ms on privacy proxy We significantly sped up our privacy proxy service by fixing a 40ms delay in

blog.cloudflare.com/reducing-dou...

It’s been a long time coming... and finally here!

We’re making all the resources from Kernel Recipes available, from the very start. It’s still a little rough around the edges in terms of interface, but totally usable: slides, videos, photos, and drawings

Enjoy!

archives.kernel-recipes.org

If you want the JDK cgroup support detection to keep working in Linux 6.12, you’d better enable the new CONFIG_MEMCG_V1 kconfig option otherwise you’ll spend a couple of days debugging OOMs 🙃

Glad you found it useful and congrats on your final exam mark!

Change Point Detection for performance testing just reached a whole new level. The project behind nyrkio.com and used in companies like Confluence and DataStax just got accepted into the ASF incubator project. Aww yeah!

Thanks for being our shepherd Mick! So grateful and super excited to see Hunter become an ASF incubator project!

Starter pack for folk contributing and committing to Apache Cassandra.

Let me know if you should be a part of it – ever contributed code or been active on any of our jira tickets.

go.bsky.app/13X1Pa

Testing Distributed Systems Curated list of resources on testing distributed systems

Hello, Bluesky users!

I curate and maintain list of resources on testing distributed systems. You might have seen it before. It's a good one, if I may say so myself.

asatarin.github.io/testing-dist...

Bluesky and the AT Protocol: Usable Decentralized Social Media Bluesky is a new social network built upon the AT Protocol, a decentralized foundation for public social media. It was launched in private beta in February 2023, and has grown to over 10 million regis...

Yes! I helped write a paper about the overall architecture arxiv.org/abs/2402.03239 but it doesn’t go into the systems/implementation/scalability aspects. I hope we can do a follow-up that covers that angle.

Bluesky is really heating up! Lots of amazing folks are coming over here

Amazon EBS now supports detailed performance statistics on EBS volume health - AWS Discover more about what's new at AWS with Amazon EBS now supports detailed performance statistics on EBS volume health

Finer-grained performance metrics for EBS are here! The ones I'm most excited about are IO latency histograms, a real game changer for database performance monitoring and tuning: aws.amazon.com/about-aws/wh...

This brings back such painful memories when jdk17 support got added to Apache Cassandra

[arXiv highlights] xNVMe: Unleashing Storage Hardware-Software Co-design

An https://xnvme.io/ paper!

arxiv.org/abs/2411.0...

ICPE paper bidding has started. Time to get to work. 👓

I’m speaking on Wednesday at #srecon in Dublin. If you’re attending please come say hi!

www.usenix.org/conference/s...