Frederic Branczyk
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brancz.com
Frederic Branczyk
@brancz.com
Founder polarsignals.com 🧊 ❄️ Building parca.dev, Prometheus maintainer. Distributed systems, databases, and performance engineering. Actually born in Berlin. (he/him)
It's so awesome that we can use our own product every single day at Polar Signals to understand our own software. I want to get into the rhythm and do more of these.

What do you think? How would you have troubleshooted this, and could you have understood what's going on in less than 1min?
November 19, 2025 at 2:04 PM
You thought docker is causing a lot of wasted space on your disk? Try working on a moderately sized Rust codebase that produces 10 binaries 🫠
November 6, 2025 at 12:22 PM
I had a great time talking about GPU profiling at Ubuntu Summit! Thanks everyone for joining!
October 24, 2025 at 10:58 AM
Quick one-hour weekend experiment, and I'm already visualizing our CI infrastructure at Polar Signals as distributed traces in Jaeger! Already gave me insight that I didn't know before (our Rust tests are the critical path, not release binary build times)!
October 18, 2025 at 12:29 PM
It's been that kind of a day ...
October 13, 2025 at 6:48 PM
Figure out when the deploy happened 👀
October 9, 2025 at 12:20 PM
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.
July 22, 2025 at 12:11 PM
Gonna try to make this the first week with my urchin keyboard as my daily driver!
July 21, 2025 at 8:00 AM
Didn’t actively do anything
June 24, 2025 at 4:09 PM
Our very own @asubiotto.bsky.social for the first time publicly talking about the DST approach we’re taking in our new database.

(Blog post coming soon as well!)
June 20, 2025 at 11:31 AM
On my way with @metalmatze.de to Systems Distributed '25! Excited for all the talks and seeing old and new friends!
June 18, 2025 at 12:47 PM
👀
May 2, 2025 at 11:18 AM
Last day of #KubeCon! Come over to our booth to check out our latest GPU profiling demo and get some cool 🧊Polar Signals SWAG!
April 4, 2025 at 7:53 AM
New keyboard got an upgrade 😎

(Polar Signals key caps)
March 18, 2025 at 3:14 PM
New keeb 🙌

(Wireless lily58 pro, kiiboom matcha latte v2 switches, and blank DSA keycaps)
March 16, 2025 at 7:19 PM
End of an awesome week in the alps, we had pretty great weather (no new snow but can’t have everything)!
February 21, 2025 at 9:53 AM
One of the best and simultaneously not very well known feature on GitHub!
February 4, 2025 at 12:38 PM
> asubiotto closed this as completed 2 hours ago

👀
January 16, 2025 at 12:28 PM
Prometheus 3.0 was released live on stage at KubeCon!
November 15, 2024 at 12:37 AM
Matthias and I are at SREcon in Dublin! Come say hi at our booth (number 29) and chat about continuous profiling, performance and observability!
October 29, 2024 at 9:48 AM