Thread by @twannl
AI · · 1 min read · x.com ↗
Antoine v.d. SwiftLee @twannl 2026-05-04
Learn about unexpected suspension points
https://avanderlee.com/concurrency/unexpected-task-suspension-points-in-swift-concurrency/…
🔪 Cutting performance down in two places
😲 Silently happening
🛠️ Xcode Instruments are golden
#swiftlang #iosdev
Christian A @Altawesomeee 2026-05-04
The "silently happening" part is what gets you. I had async code I assumed was flying through and it was blocking the whole time.
Instruments saved me more than once on this.
Matt Waller @wattmaller1 2026-05-04
One day, I will dive into Xcode Instruments more.