Let's scale Pyrra even further!

Imagine not having continuous profiling and sleeping on this. Wild.

Happy to share that I've been nominated to the Vortex Technical Steering Committee! It's been fun and productive switching to Vortex from Parquet as our storage format @polarsignals.com and I'm excited to continue contributing to the Vortex project. vortex.dev/blog/novembe...

Next.js 16 + turbopack took our frontend builds from 5-7m down to just over 2m. This means faster speed of iteration in development and faster CI. Performance is UX. Performance is DX. Performance is a feature.

Are USDTs the key to unlock the future of low level tracing? Maybe! Read all about how we implemented them and how we plan on using them to breath new life into observability! www.polarsignals.com/blog/posts/2...

Standing on the shoulders of giants. We built our new database on open source projects.

We completed a major project to switch our storage file format from Parquet to Vortex 🌪️ resulting in 70% average query performance improvement across the board 🚀 Learn more about how rethinking interface-imposed limitations unlocked these gains in our latest blog post 👇

"Stell dir vor du installierst nix." Germans talking about installing NixOS is very funny. 😀

Ever wanted to filter flame graphs by distributed trace ID? Or by anything else? In Node.js, now you can! www.polarsignals.com/blog/posts/2... Happy Profiling! 🚀🐻‍❄️

Was digging into JS source maps recently and had a lot of fun writing this post, especially the interactive bits. 🤓

We made a bit of a dumb thing early on at Polar Signals where we accidentally created a critical GCS bucket as multi-region. But today I learned about Bucket relocation (launched in 2024). Very timely! docs.cloud.google.com/storage/docs...

Time has come to rewatch Mr. Robot. 🖤

Previously, we've correlated GPU metrics with CPU profiles, now we can actually show you GPU time! This is suuuuuper exciting! 🚀

Pyrra v0.9 is here! 🎉 github.com/pyrra-dev/py... It's incredible to see the amount of diverse contributions to the project! I didn't even realize it was that way until the release was published! Incredible to see! Thank you, everyone!

Native Histogram considered stable in @Prometheus.io going forward! 🥳 Props to all the people who worked on this for years!

This talk is rage baiting me hard. 😂 #PromCon

BER 🚄 MUC Oh my way to #PromCon! Excited to meet with the @prometheus.io community again! See you tomorrow!

Took advantage of the lunch break to replay this great talk by Alfonso Subiotto (@asubiotto.com) making the case for a State Machines based approach to Deterministic Simulation Testing, being used at @polarsignals.com, very interesting! Their inspiration for this: sled.rs/simulation

It's amazing to see a packed room for the talk of our very own @asubiotto.com, who is talking about Deterministic Simulation Testing at @eurorust.eu right now! 🦀 ⌛

We're having a blast at @eurorust.eu today! 🦀 Come by to talk about all things performance and continuous profiling!

So cool and parca.dev getting mentioned out of nowhere. Love to see it!

Amsterdam. The only major airport where the pilots join you for the same bus ride.

Pager Duty Princess @metalmatze.de

Working from the @polarsignals.com office today

Profile.

FINALLY Spotify getting it together. Been following that forum thread literally for YEARS.

Heartbreaking. Han was amazing!

We recently made some performance improvements to our Flame Graph by implementing backend pre-computation and viewport culling. Read more in our latest blog post: www.polarsignals.com/blog/posts/2...

What are some good Ubiquiti Unifi AP alternatives people go for these days when buying Wi-Fi 6/7 APs?

I wrote about why we should treat German string encoding/StringViews as Just Another Encoding™

Remember Epic Meal Time? I feel old.

New Pendulum album. Yay!

Tomorrow, the premiere of this year's Lightning Talks at Systems Distributed! Hosted by @nvais.bsky.social, five speakers selected on Day 1 took to the stage on Day 2, in a race against the gong... Join them on YT tomorrow, 10am PT / 1pm ET / 7pm CET youtube.com/watch?v=k58v...

Ok, I have a rant I have to let go of. If you generate a change to an open-source project fully with AI, didn't read, review, understand, and questioned it, then at least have the decency to say this on the PR description. You're stealing people's time by making them review it for you.

My favorite discovery of the day: Claude Code using Opus Plan Mode! That's exactly what I wanted! 🎉

Is anyone aware of a end to end monitoring pipeline for email? Like send an email every minute with a timestamp via SMTP and then use IMAP to read back the latest email and report that last seen timestamp. Would be similiar to blackbox exporter but for emails.

We're excited to share that the Parca Agent now works offline! Store CPU profiles locally when disconnected, upload when ready. Because not all computing happens in data centers. Read how we built it: www.polarsignals.com/blog/posts/2...

A much requested feature finally shipping! Now you can finally understand why your process is taken off the CPU, whether for timing reasons, for I/O reasons, or any of the many other possibilities!

Please join us in welcoming @polarsignals.com as a Gold sponsor of #rustconf25! Support from sponsors like Polar Signals helps @rustfoundation.org put on an amazing event for the #rustlang community. Learn more about Polar Signals at www.polarsignals.com & get ready to see them at #rustconf 🎉

We just made our Next.js builds 100% reproducible at Polar Signals! 🧊 Same code = same output, byte-by-byte every time. 🔍 Check out our practical guide: www.polarsignals.com/blog/posts/2...

Yeah, trust me, you want #continuousprofiling. 50% CPU improvement with a ~5-line code change. I often hear people say "we're not at that level of optimizing". I've not found one company this was true for, and you're missing out on opportunities like these.

THIS THIS AND THIS. Great post! 👏

🔥 Have you ever stared at a flame graph wondering why your app is slow? Using the new @PolarSignalsIO MCP, you can now ask "Why is my service slow?" and e.g. @anthropic.com's Claude Code or @cursor.com.web.brid.gy will analyze your production profiles and suggest code fixes.

The CfP for PromCon (Munich, Oct 21+22) is still open for two more days - please submit your @prometheus.io talks :) promcon.io/2025-munich/...

📔Writing our Rust database from scratch gave us a golden opportunity to implement deterministic simulation testing as a core feature. Learn about the architecture that gives us full control over DST ingredients. 🧊 www.polarsignals.com/blog/posts/2...

Reminder: The CfP for #PromCon (October 21+22 in Munich) is open! Please submit your @prometheus.io talks :) promcon.io/2025-munich/...

Incredible talk! First time we made the slide deck dark. 🖤

There it is.

It's so nice to travel to a conference by train. 🧘‍♂️ #SD25

Off to Systems Distributed. See you in Amsterdam!