We've just released a new Insider update, giving some much-needed love to the Call Graph & Function List. The source view now responds to the Calls pane, Set as Root in the Call Graph carries over to the Function List, advanced copy functionality, and more! Go check it out!

Was given access to Superluminal recently, so far I'm really liking it! Works decently well with D too!

I've made a D binding to their instrumentation API, is available here! github.com/KitsunebiGames…

Getting unreasonably excited about getting Superluminal on Linux out there. I’m seriously starting to wonder if anyone in the history of Linux has ever done full system profiling similar to what is possible on Windows with ETW, vs just profiling individual programs.

So I got a new machine. Windows 11. Brand new. It's stuck updating. It is taking ages. Why? Well, I don't have any definitive answers but my most basic instinct is to always attach a profiler -- I recommend the excellent Superluminal. 1/n

When I mentioned the system wide profiling for Linux earlier today, *this* is exactly what I was talking about. Good stuff!

In today's episode of "What am exactly I waiting for here?" I waited for Visual Studio to open 477 projects in a Unity Engine generated solution. It took > 15min. Did I attach a profiler? Why of course I did, because I ran out of patience and @superluminal_sft is my only friend.

Inspired by some recent work build times, I was looking at Unity's "MegaCity Metro" sample in Unity 6. I got curious about at its build times. In particular for incremental builds (fancy speak for "I pressed the build button repeatedly but only made minimal changes inbetween.")

I want to talk about why Unity C# code is different. This is about editor performance, with nullable types as an example. There's some JSON parsing happening, which someone wants faster. (It has to be a JSON parser.)

A tech artist came to me and said "whenever we touch anything in a Unity shader graph, the editor stalls. It's painfully annoying." And yes, any meaningful change to the graph stalls the editor. Sometimes a bit, sometimes long. Let's take a look.

My application was using 100% CPU despite sleeping every tick, even at 100 ms sleep! Tracy profiler showed nothing wrong, VerySleepy gave me a couple broken clues. I finally figured it out with Superluminal. A broken GPU driver was the cause...

I am trying to get to the old context menu in the explorer in Windows 11. When you have the new menu open, you have to click "Show more options." This reliably freezes for 20s. Why? Let's take a look in Chris Peloso.

I promised to look at shader graph undo next because we still see annoying stalls there. I have 3h of time today, let's see how far we get. blog.s-schoener.com/2024-11-20-uni…

We've just released our first update of the new year with a lot of perf and quality-of-life changes on the Insider channel. Go check it out, and happy new year!

Responses much appreciated!

We've just released a new Insider update with many fixes and QoL improvements, including the much-requested support for using the horizontal mouse wheel to navigate the timeline. Go check it out!

"Profiling without Source code – how I diagnosed Trackmania stuttering" larstofus.com/2025/07/27/pro…

holy moly superluminal is so good

👀