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Superluminal
Company blog · superluminal.euprogrammingsystems
Superluminal is the company blog at superluminal.eu, writing about programming and systems. Since 2018, 16 different Hacker News readers have linked it 17 times, most often “16xAA font rendering using coverage masks, part I”. It is still writing: the last post was on 2026-05-14, and you can follow it by feed.
Too few sampled comments (5) to say how often HN recommends it.?
Why HN links it
HN commenters link Superluminal, a Windows profiler with flame charts and an ETW trace viewer, as a tool for profiling Rust and other code. The comments praise the product itself, not any writing.
Summarised by Claude from a sample of 5 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
The industry leading sampling profiler that displays profiling data visually.
Most-linked posts?
- 16xAA font rendering using coverage masks, part I4 people · 4 mentions · first linked 2018-10-29
- /3 people · 3 mentions · first linked 2023-01-28
- Compressing callstacks: a bitpacked DAG powered by a keyless hashmap2 people · 2 mentions · first linked 2025-12-01
What Hacker News says?
Per the article's "Using the right profiling tools", I have gone through a similar profiling journey in Rust and found this tool very useful: https://superluminal.eu/rust/ Works on Windows, has a great GUI, shows pretty flame charts, really pleasant to use. Costs money but worth it.
Comment linking /rust/
on “Making a parallel Rust workload 10x faster with (or without) Rayon”Submitted Compressing callstacks: a bitpacked DAG powered by a keyless hashmap as a story · 3 points
HN discussionThere's a kazillion tools out there. Here's a few off the top of my head to get started. RAD Game Tools Telemetry - http://www.radgametools.com/telemetry.htm Superluminal - https://superluminal.eu/features/ Remotery - https://github.com/Celtoys/Remotery Visual Studio's built-in profiler is an ok sampling profiler. It doesn't give you a nice multi-thread view which is a huge advantage to a span based profiler. MTuner…
Comment linking /features/
on “How we trace a KV database with less than 5% performance impact”Submitted Superluminal – a new performance profiler for Windows as a story · 3 points
HN discussion> I can see the problem with Tracy, but need to add more profiling scopes to narrow it down. If you can run on Windows try Superluminal. https://superluminal.eu/
Comment linking /
on “Synchronization Is Bad for Scale”Submitted New CPU profiler available for Rust on Windows as a story · 2 points
HN discussionHaving written similar tools like this in the past I pretty much exclusively use Tracy nowadays and let all my old stuff rot. The UI is snappy/fluid even with a tremendous amount of events, instrumentation is rich (zones/plots/memory tracking with timing, GPU events, logging, etc) and sampling is robust across all major platforms (Windows/Android/Linux/Mac) and the disassembly/analysis is as solid as most vendor too…
Comment linking /
on “Tracy: A hybrid frame and sampling profiler for games and other applications”Submitted 16xAA font rendering using coverage masks as a story · 2 points
HN discussionIf you're working with ETW traces, SuperLuminal [0] (no affiliation just a happy customer) is leaps and bounds ahead of the built-in ETW viewer. [0] https://superluminal.eu/
Comment linking /
on “All my favorite tracing tools: eBPF, QEMU, Perfetto, new ones I built and more”Submitted 16xAA font rendering using coverage masks, part I as a story · 2 points
HN discussionSubmitted 16xAA font rendering using coverage masks, part I as a story · 2 points
HN discussionSubmitted Superluminal Profiler is now available for Linux as a story · 1 points
HN discussionSubmitted Efficiently sorting gigabytes: the Deferred Merge Sort as a story · 1 points
HN discussionSubmitted Compressing callstacks: a bitpacked DAG powered by a keyless hashmap as a story · 1 points
HN discussionSubmitted 16xAA font rendering using coverage masks, part I as a story · 1 points
HN discussionSubmitted 16x AA font rendering using coverage masks (Part I) as a story · 1 points
HN discussionSubmitted Superluminal: Profiling Reimagined as a story · 1 points
HN discussion