Thor @thorfour.dev · 20/09/2026I love that the only way to watch the Packers game is paying 700$ for both YouTube TV and NFL Gamepass. Absolutely not 010
Thor @thorfour.dev · 07/09/2026I'm at the stage of parenting where my children are replacing me with their friends. It's both exciting to watch and hurtful. Like why would you want to play with Timmy instead of me?! I'm way the fuck cooler than he is! 😂😂😭😭 170
Thor @thorfour.dev · 17/08/2026static.klipy.comYou Have Never Been Cooler DwightALT: You Have Never Been Cooler Dwight 060
Thor @thorfour.dev · 16/08/2026Played Minecraft for the first time in 15 years with my kids today. What an absolute nostalgia rush 010
Thor @thorfour.dev · 12/08/2026LFG!static.klipy.comMinnesota Karma TrainALT: Minnesota Karma Train 000
Thor @thorfour.dev · 11/08/2026I have to say, Claude has drastically reduced the amount of cursing in my commit messages. I don't like it. People will start to think I'm professional 100
Thor @thorfour.dev · 31/07/2026static.klipy.comThe Office: Michael Scott's 'It's Happening!'ALT: The Office: Michael Scott's 'It's Happening!' 020
Reposted by ThorPolar Signals @polarsignals.com · 28/07/2026🔥Flame charts are now GA for all CPU profiles on Polar Signals Cloud. X-axis = wall-clock time, so periodic GC, phase shifts, and lock contention show up as patterns instead of getting averaged out. www.polarsignals.com/blog/posts/2...polarsignals.comIntroducing Flame Charts for All CPU Profiles | Polar SignalsThe temporal dimension flame graphs might be missing. 021
Thor @thorfour.dev · 22/07/2026static.klipy.comKelly Kapoor: Too Excited To Sleep (The Office)ALT: Kelly Kapoor: Too Excited To Sleep (The Office) 020
Reposted by ThorPolar Signals @polarsignals.com · 14/07/2026The 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.comOur new and faster profiler dashboard | Polar SignalsLearn more about our new and improved profiler dashboard. 064
Thor @thorfour.dev · 29/06/2026@zed.dev is by far the best editor I've ever used. It's the only one that's managed to pry vim from my hands. 040
Reposted by ThorAlfonso Subiotto @asubiotto.com · 24/06/2026This was a fun one! For @polarsignals.com's latest hackathon, I wrote an FSST decompression CUDA kernel and then optimized it by profiling with our new GPU PC sampling feature. www.polarsignals.com/blog/posts/2...polarsignals.comMy Journey Optimizing a CUDA Kernel with Polar Signals | Polar SignalsA storage engineer's descent into warp stalls, memory throttles, and aligned stores 052
Reposted by ThorPolar Signals @polarsignals.com · 18/06/2026Ever 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.comProfiling Internals: JavaScript on V8 | Polar SignalsHow Profilers Work: Part 3 044
Reposted by ThorPolar Signals @polarsignals.com · 10/06/2026🚀 Launching today: GPU PC sampling in production. Instruction-level profiling telling you why and where warps stall. Whether it is memory latency, scoreboard waits, or barriers. 🧊 Previously NSight-only territory. Now running in prod with low overhead. www.polarsignals.com/blog/posts/2...polarsignals.comOpen-Source Low-Overhead NVIDIA CUDA PC Sampling | Polar SignalsAnd how we made it happen 093
Thor @thorfour.dev · 23/05/2026First principles has got to be the most meaningless phrase in tech 000
Reposted by ThorPolar Signals @polarsignals.com · 20/05/2026New Blog Alert! Learn how we overcame eBPF limits to unwind deeply nested PyTorch training stacks and learned some cools things along the way: www.polarsignals.com/blog/posts/2...polarsignals.comPython Zebra Stacks | Polar SignalsUnwinding Deep PyTorch Training Stacks with eBPF 012
Thor @thorfour.dev · 16/05/2026Sure MTTR is important. But have you considered MTTP (mean time to pancake)? It's the only metric my children track 🥞 010
Thor @thorfour.dev · 14/05/2026Rust making me install cronjobs to perform cargo cleans is easily the second dumbest thing about the language (async #1) 000
Reposted by ThorPolar Signals @polarsignals.com · 06/05/2026🤖Using Polar Signals Cloud and Claude Code to autonomously optimize your code every day! 📈 Also: Check out our new website! What do you think? www.polarsignals.com/blog/posts/2...polarsignals.comAutonomous Optimization with Claude Code | Polar SignalsOptimize your infrastructure autonomously every day with Claude Code and Polar Signals 053
Thor @thorfour.dev · 03/05/2026I love going to concerts in the cities because I get to experience how fucking awesome the people of Minneapolis are 120
Thor @thorfour.dev · 28/04/2026Why can't we have bluesky but for git repos? Stop relying on GitHub to build a reliable service but have a distributed but discoverable service. 220
Reposted by ThorAlfonso Subiotto @asubiotto.com · 28/04/2026We'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. 1167
Thor @thorfour.dev · 18/03/2026Reading the new large hadron collider particle discovery.media.tenor.coma man in a striped shirt is reading a menu in a restaurantAlt: Good burger. Reading menu and responding I know some of these words 020
Thor @thorfour.dev · 13/03/2026I continue to be proud to be a Minnesotan, embarrassed to be an American 000
Thor @thorfour.dev · 11/03/2026media.tenor.coma man in a suit and tie is sitting in front of a windowAlt: Michael Scott heavy sigh 000
Reposted by ThorPolar Signals @polarsignals.com · 10/03/2026🚀 Introducing the Polar Signals VS Code extension! See CPU time, memory allocations, and more as inline annotations, right next to your code. Works with Polar Signals Cloud and self-hosted Parca. www.polarsignals.com/blog/posts/2...polarsignals.comDo more with less. | Polar SignalsPolar 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. 185
Thor @thorfour.dev · 06/03/2026Apparently there's no amount of AI that can figure out my deadlock 120
Thor @thorfour.dev · 28/02/2026media.tenor.coma man in a suit and tie is sitting in front of a windowALT: a man in a suit and tie is sitting in front of a window 000
Thor @thorfour.dev · 10/02/2026I had such a great time speaking at my first #FOSDEM. Check out the other great talks by some of my colleagues! 050
Thor @thorfour.dev · 07/02/2026media.tenor.comBlech How Did We Ever Think This Was A Good Place GIFAlt: Blech How Did We Ever Think This Was A Good Place GIF 000
Reposted by ThorFrederic Branczyk @brancz.com · 01/02/2026Brennan telling #FOSDEM how to use Parca to profile Rust workloads! 081
Reposted by ThorPolar Signals @polarsignals.com · 31/01/2026Polar 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...fosdem.orgFOSDEM 2026 - OOMProf: profiling Go heap memory at OOM timeOOMProf 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… 063
Thor @thorfour.dev · 28/01/2026Heading to FOSDEM!media.tenor.coma penguin wearing goggles and a scarf is sitting on top of a planeAlt: a penguin wearing goggles and a scarf is sitting on top of a plane 100
Reposted by ThorFrederic Branczyk @brancz.com · 27/01/2026Very excited for this year's #FOSDEM! Lots of talks by Polar Signals folks: 184
Reposted by ThorPolar Signals @polarsignals.com · 22/01/2026Symbolization 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.comHow to check your debuginfo status in Polar Signals CloudA faster and easier way to troubleshoot debuginfo processing in Polar Signals Cloud. 044
