Polar Signals

Introducing IAM Represent your organization in Polar Signals

🔐 With a growing number of customers and more diverse customers, came the need for a more flexible authorization system that can represent any organization. That's what we're shipping today. Check it out on the blog! 🧊

www.polarsignals.com/blog/posts/2...

Call Stacks and Unwinding 101 How Profilers Work: Part 1

Ever wondered how profilers work? Check out part one in our series, where we dive into the nitty-gritty details. Let us know what you think!

www.polarsignals.com/blog/posts/2...

Or whether you prefer Cursor, we've got you covered!

Whether you want to have Claude Code (or Claude Desktop/Web) query profiling data and make improvements.

Introducing Oauth for AI Agents Use your favorite AI agent securely with Polar Signals Profiling

🤖 Using the Polar Signals MCP just got even easier. Check out how to use it with your favorite AI agent. 🧊

www.polarsignals.com/blog/posts/2...

ICYMI: Polar Signals at FOSDEM Recap of the talks we gave at FOSDEM developer conference

ICYMI We have a recap of what we talked about at #FOSDEM! 🧇 🧊

If you're interested in databases, eBPF or Rust this is worth checking out!

www.polarsignals.com/blog/posts/2...

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...

FOSDEM 2026 - OOMProf: profiling Go heap memory at OOM time OOMProf is a Go library that installs a eBPF programs that listen to Linux kernel tracepoints involved in OOM killing and records a memory profile before your Go program is dead and gone. The memory…

Polar Signals at #FOSDEM 2026 day 1!

Tommy at 12:30 @ H.1308 (eBPF)
OOMProf: Profiling Go heap memory at OOM time
fosdem.org/2026/schedul...

Thor at 17:25 @ UB2.252A (Databases)
From Disks to Distributed: Our Journey of Database Evolution in the Cloud
fosdem.org/2026/schedul...

How to check your debuginfo status in Polar Signals Cloud A faster and easier way to troubleshoot debuginfo processing in Polar Signals Cloud.

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...

Introducing the Sandwich View A new way to visualize a function’s callers and callees side by side.

📢 It’s a new year so we’re announcing something new which is the Sandwich view: A way to visualize a function’s callers and callees side by side for better debugging and performance work. Read more about it here: www.polarsignals.com/blog/posts/2...

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.

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...

Profiling NVIDIA CUDA in Kubernetes The easiest way to get started Profiling CUDA in Kubernetes

🚀 We recently announced our NVIDIA CUDA always-on profiler. Check out this blog on how to try it out super quickly with your CUDA workload today!🧊

www.polarsignals.com/blog/posts/2...

Congrats to our very own @asubiotto.com on joining the Vortex Technical Steering Committee! 🎉
vortex.dev/blog/november-2025

USDT Probes: A Deep Dive How we added USDT Probe support to Parca Agent

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...

Great Lakes: A Delta Lake Fork Our updates to Delta Lake Table Format

🧊 New on the Polar Signals Blog — Our Delta Lake Fork

Purpose-built for our continuous profiling product. In our latest post, we walk through how Delta Lake works, and the changes we've made to improve performance for our product.

👉 Read the full post: buff.ly/KwHINtO

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.

www.polarsignals.com/blog/posts/2...

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 👇

Custom Labels for Node.js Correlate Application-Specific Data With Profiles

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! 🚀🐻‍❄️

Good morning #KubeCon!
We are excited to meet all of you and talk about performance! 🚀

Stop by our booth at 1360 next to the Demo Theatre to learn more about CPU, GPU, and memory profiling in production! 🧑‍💻

The Inner Workings of JavaScript Source Maps A deep dive into how JavaScript source maps work under the hood, with examples showing how all the pieces fit together.

Ever wondered how your browser devtools jumps from bundle.min.js:1:27698 → src/index.ts:73:16? 🧊

We unpack the internals of JS Source Maps: Base64 VLQ encoding, mapping deltas, and how your original TS code gets reconstructed from minified bundles.

🔗 www.polarsignals.com/blog/posts/2...

Continuous NVIDIA CUDA Profiling In Production Low-Overhead Profiling of GPUs with USDT Probes and eBPF

🚀 We're super excited to launch NVIDIA CUDA Profiling today! Check out the blog on how we made it happen! 🧊

www.polarsignals.com/blog/posts/2...

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!

Profile.

🦀 Profiling Rust in Action — Sponsored by @polarsignals.com

Want to make your Rust applications faster and more efficient? In this hands-on workshop, we’ll explore what continuous profiling is and how it goes beyond traditional profiling!

Learn more & Register now 👉 eurorust.eu/workshops/pr...

We're excited to be at @rustconf.com 2025!
Let's talk about profiling Rust with zero compromise!
#rustconf25

Parallel Flame Graph Rendering How we improved our flame graph rendering by moving computation to the backend.

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...

Das Problem mit German Strings And why I don't want my database to choose the best encoding for me (yet)

German strings 🇩🇪 have become very popular in the database world. However, they're not a silver bullet. Read more in our latest blog post:

OOMProf - Profiling on the Brink Using eBPF to record your programs dying breathes

Tame the OOM killer with OOMProf, the new eBPF memory profiler for Go programs being taken out by the kernels OOM killer!
www.polarsignals.com/blog/posts/2...

Offline Mode for the Parca Agent Collect and upload profiles -- even without a network connection

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...