iiinova — where your digital self keeps evolving

Using Amp Code on my phone from within my Waymo while driving to pick up my badge for “The AI conference” is the most 2026 thing I've done this year.

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Frederic Branczyk @brancz.com · 25/09/2026

About to start my talk on performance engineering in the age of AI. Come and see it at WeAreDevelopers at stage 3!

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Frederic Branczyk @brancz.com · 22/09/2026

In sunny San Jose this week for WeAreDevelopers. Who else is gonna be there? Also don’t have dinner plans yet today if you’re up for talking observability, performance and/or GPUs 🤓

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Frederic Branczyk @brancz.com · 10/09/2026

At signals conf today, come say hi! Fun fact: the prep dinner for Signals Conf is where the idea for the Polar Signals <> Dash0 acquisition idea originated!

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Frederic Branczyk @brancz.com · 17/08/2026

🚀 Polar Signals is Joining Dash0! 🧊 I could not be more excited to bring continuous profiling to even more companies as well as take our database and make it the best foundation it can be for all of Observability! www.polarsignals.com/blog/posts/2...

polarsignals.com

Polar Signals is Joining Dash0 | Polar Signals

The next chapter for continuous profiling, our database, and the team

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Frederic Branczyk @brancz.com · 28/07/2026

Flamecharts combined with distributed tracing correlation is such an amazing feature! I love inspecting eg. queries that customers run on Polar Signals this way to see if the query is properly utilizing all cores uninterrupted!

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Max Inden @mxinden.mastodon.social.ap.brid.gy · 17/07/2026

We have an open position for a student worker on the Firefox Networking team in Germany. We work on the full stack, from high level HTTP all the way down to TCP / UDP. Some C++, some Rust. Help us fight for an open internet for everyone. www.mozilla.org/en-US/careers/posit…

mozilla.org

Mozilla Careers — Necko Student Worker — Open Positions

Mozilla is hiring a Necko Student Worker in Remote Canada, Firefox, New Products, Firefox, Core Services, Firefox, Mozilla Foundation, Core Services, Mozilla.org, New…

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Polar Signals @polarsignals.com · 14/07/2026

The Polar Signals profiler got a major upgrade. New dashboard, and everything is faster and smoother 🚀 We can’t wait for you to try it out! Here's what's new and how we did it: www.polarsignals.com/blog/posts/2...

polarsignals.com

Our new and faster profiler dashboard | Polar Signals

Learn more about our new and improved profiler dashboard.

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Thor @thorfour.dev · 07/07/2026

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Polar Signals @polarsignals.com · 30/06/2026

Less context, better answers. 🔥 The new @polarsignals.com MCP makes smaller, more effective tool calls and iterates on what's actually worth querying. www.polarsignals.com/blog/posts/2...

polarsignals.com

Iteratively explore your flame graphs with the MCP sandwich tool | Polar Signals

Don't bloat your LLM's context. Let it iteratively explore the parts of your flame graphs that actually matter.

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Frederic Branczyk @brancz.com · 24/06/2026

Super excited to be experimenting with GPU-accelerated query execution (starting with decoding data on-GPU). We're still learning, but this is very exciting!

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Polar Signals @polarsignals.com · 18/06/2026

Ever wondered how a profiler knows which JavaScript function is hot when V8 compiles your code three different ways? Brennan went deep on unwinding and symbolizing V8 stacks across Sparkplug, Maglev, and TurboFan. The detective work behind every flame graph. 🔥 www.polarsignals.com/blog/posts/2...

polarsignals.com

Profiling Internals: JavaScript on V8 | Polar Signals

How Profilers Work: Part 3

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Frederic Branczyk @brancz.com · 10/06/2026

Today we're launching the missing piece for GPU profiling in open source. The team has really outdone themselves in this one!

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Frederic Branczyk @brancz.com · 22/05/2026

Got to troubleshoot what is probably one of the weirdest/most interesting bugs of my career yesterday and today. This one is probably going to deserve a write-up. Thankfully, we heavily dogfood our product, and as a result, customers had no impact.

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Frederic Branczyk @brancz.com · 20/05/2026

We care *deeply* (pun intended) about producing the highest quality data for our customers. Incomplete stacks are never great, check out this super fascinating write-up from Tommy on how we vastly improved unwinding of deep python stacks.

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Frederic Branczyk @brancz.com · 13/05/2026

Been lightly using a gemma4 26B model with an mlx backend via lm studio and wow it’s incredibly good! Just for some random small chats, but it’s been surprisingly good.

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Frederic Branczyk @brancz.com · 06/05/2026

Really excited about what Polar Signals Cloud can do in a world where more and more code is written by LLMs. Give the LLMs the context they deserve! Also: Check out our new slick website!

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jenny (phire) @phirephoenix.com · 30/04/2026

I wrote about our team’s code review norms, which I am grateful are deeply human.

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Alfonso Subiotto @asubiotto.com · 28/04/2026

We've been working on a major schema migration at @polarsignals.com that has unlocked some pretty wild improvements. Apart from a 50% (!!) reduction in storage size thanks to logical compression in vortex.dev, there has been a dramatic improvement in query performance.

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Frederic Branczyk @brancz.com · 16/04/2026

Hey @anthropic.com, hear me out: Multi-player claude code sessions. Sharing the same claude code session with my team.

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Frederic Branczyk @brancz.com · 15/04/2026

TypeScript users can now enjoy Polar Signals Cloud to the fullest as well!

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Frederic Branczyk @brancz.com · 09/04/2026

Shout out to Cursor for (to my knowledge) being the only MCP OAuth client that implements token refreshes! It makes a huge difference for users not having to re-auth all the time.

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Frederic Branczyk @brancz.com · 08/04/2026

/buddy off Fun idea, but in practice, annoying and distracting.

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Polar Signals @polarsignals.com · 30/03/2026

We caught up with @bwplotka.dev at KubeCon EU. He's excited about semantic conventions across OTel and Prometheus finally becoming practical, and AI tools changing how open source is built. #KubeCon #OpenTelemetry #Prometheus youtube.com/shorts/QF3Yk...

youtube.com

Bartek Plotka at KubeCon EU 2026 in Amsterdam

YouTube video by Polar Signals

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Frederic Branczyk @brancz.com · 30/03/2026

Periodic reminder that O(1) is not equal O(1). Your constant matters.

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Frederic Branczyk @brancz.com · 26/03/2026

A historic step for profiling within the OpenTelemetry project!

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Polar Signals @polarsignals.com · 26/03/2026

We caught up with Felix earlier this week at KubeCon EU, and TODAY he's presenting on the OpenTelemetry profiling signal reaching alpha, together with Florian. 📍 15:15, Hall 8, Room F Profiling as a first-class signal in OTel is huge. Don't miss it!

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Frederic Branczyk @brancz.com · 24/03/2026

@metalmatze.de and I are at KubeCon! Hit us up if you wanna chat observability and continuous profiling!

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Frederic Branczyk @brancz.com · 20/03/2026

I'll be at KubeCon next week. I don't have many slots left, but if you wanna hang out or chat about profiling and all things observability! DM me, and I'm happy to find time!

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Polar Signals @polarsignals.com · 16/03/2026

At #QConLondon? Check out @asubiotto.com's talk on how we test our database(s) in an effort to not let critical bugs ever hit production! Today at 10:35AM GMT. Location Windsor (5th Fl.) Track Native Languages - and Wasm qconlondon.com/presentation...

qconlondon.com

QCon London 2026 | A Deterministic Simulation Testing (DST) Journey: From WASM in Go to State Machines in Rust

Get practical inspiration and best practices on emerging software trends directly from senior software developers at early adopter companies.

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Frederic Branczyk @brancz.com · 10/03/2026

See profiling data right in your IDE/texteditor! (*and* make it available to your favorite AI)

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Frederic Branczyk @brancz.com · 24/02/2026

This one has been a long time coming, excited to finally have shipped it!

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Frederic Branczyk @brancz.com · 19/02/2026

If you ever wondered how profilers work 🤓

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Frederic Branczyk @brancz.com · 18/02/2026

There has been a really exciting movement in Kubernetes to actually acknowledge datacenter topology, and I don't see enough people talking about it. This one might seem small, but it opens up possibilities for applications needing to care about network topology. kubernetes.io/blog/2025/12...

kubernetes.io

Kubernetes v1.35: Timbernetes (The World Tree Release)

Editors: Aakanksha Bhende, Arujjwal Negi, Chad M. Crowell, Graziano Casto, Swathi Rao Similar to previous releases, the release of Kubernetes v1.35 introduces new stable, beta, and alpha features.…

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Alfonso Subiotto @asubiotto.com · 17/02/2026

I'm happy to share that I will be speaking at #QConLondon on March 16 on deterministic simulation testing at Polar Signals. For anyone interested in attending: SPEAKER60QUK26 for £60 off

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Frederic Branczyk @brancz.com · 12/02/2026

We just made it even more convenient to use Polar Signals with your favorite AI!

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Frederic Branczyk @brancz.com · 11/02/2026

Another @github.com outage? Actions not starting/reported.

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Frederic Branczyk @brancz.com · 10/02/2026

#FOSDEM was a ton of fun this year! Check out our recap if you missed any of our talks! (also FOSDEM is always a better time if you don't catch fosdem-flu which thankfully I didn't this year!)

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Frederic Branczyk @brancz.com · 10/02/2026

Do I know anyone who has successfully set up Google Workspace user sync and SSO with Azure (as in Google Workspace is the primary)? I could use some help (support has not been helpful).

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Frederic Branczyk @brancz.com · 01/02/2026

Brennan telling #FOSDEM how to use Parca to profile Rust workloads!

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Polar Signals @polarsignals.com · 01/02/2026

Polar Signals at #FOSDEM 2026 day 2! Both talks in the Rust room. Profiling Rust applications with Parca Brennan at 12:30 @ UB2.252A (Rust) fosdem.org/2026/schedul... Frederic at 16:00 @ UB2.252A (Rust) Random seeds and state machines: An approach to DST in Rust fosdem.org/2026/schedul...

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Frederic Branczyk @brancz.com · 31/01/2026

@thorfour.dev telling #FOSDEM about our new rust-based database (with lots of open source inside!)

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Frederic Branczyk @brancz.com · 31/01/2026

@gnurizen.bsky.social showing us how we can get a memory profile just when your process is about to be killed by the OOM killer.

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Frederic Branczyk @brancz.com · 27/01/2026

Very excited for this year's #FOSDEM! Lots of talks by Polar Signals folks:

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Polar Signals @polarsignals.com · 22/01/2026

Symbolization issues don’t have to be mysterious. Polar Signals Cloud now shows exactly what’s happening with your debuginfo, right from the flamegraph frame: www.polarsignals.com/blog/posts/2...

polarsignals.com

How to check your debuginfo status in Polar Signals Cloud

A faster and easier way to troubleshoot debuginfo processing in Polar Signals Cloud.

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Frederic Branczyk @brancz.com · 13/01/2026

We've been working on something exciting in the Arrow/DataFusion ecosystem, which finally shipped with yesterday's release of DataFusion. You can now use Run-End-Encoded arrays in group by clauses! github.com/apache/dataf...

github.com

Support Aggregating by `RunArray`s · Issue #16011 · apache/datafusion

Is your feature request related to a problem or challenge? It's currently not possible to aggregate by RunArrays. Example code grouping by a `RunArray` use arrow::array::{Array, Int32Array, RunArra...

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Alfonso Subiotto @asubiotto.com · 07/01/2026

My EuroRust talk has been uploaded to YT! I cover how we architected our Rust database at @polarsignals.com as a set of state machines to enable deterministic simulation testing and catch hard-to-reproduce bugs before they hit prod.

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Frederic Branczyk @brancz.com · 31/12/2025

What an awesome year at Polar Signals! Some highlights: 📈 >10x data scale ⚡️ Shipped always-on GPU profiling 🦀 Shipped our new Rust/DataFusion/Vortex DB Feeling lucky to get to work with such an incredible team & customers like Vercel, Notion, Canonical, Turbopuffer and more! 2026, we're ready!

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Polar Signals @polarsignals.com · 30/12/2025

We cut cross-zone traffic for SLO monitoring by 90% using Prometheus subquery optimization. The trick: pre-aggregate data locally instead of shuffling 55M raw samples to Thanos queriers. Coming soon to Pyrra! 🚀 www.polarsignals.com/blog/posts/2...

polarsignals.com

Do more with less. | Polar Signals

Polar Signals Cloud is an always-on, zero-instrumentation continuous profiling for CPU, GPU, and Memory that helps improve performance, understand incidents, and lower infrastructure costs.

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