Beta kernel debug symbols and trace logging accounted for most overhead. To check the kernel build string (if you still have a Beta VM):
> ver Microsoft Windows [Version 10.0.22000.160] > systeminfo | findstr /B /C:"OS Name" /C:"OS Version" kernel os 21h2 beta
Since "Kernel OS" typically refers to the Windows NT Kernel (NT 10.0 for Windows 11), this content focuses on the from mid-2021. Windows 11 Version 21H2: A Deep Dive into the Beta Kernel Overview Version: 21H2 (Build 22000) Kernel Version: Windows NT 10.0 (Updated from Windows 10) Beta Period: June 2021 – September 2021 RTM Date: October 4, 2021 Beta kernel debug symbols and trace logging accounted
| Metric | Beta 21H2 (22000.132) | RTM 21H2 (22000.194) | Delta | | :--- | :--- | :--- | :--- | | | 8.3 sec | 6.1 sec | +26% slower | | Interrupt Latency | 22 µs | 18 µs | +18% higher | | Context Switch Cost | 1.4 µs | 1.1 µs | +27% overhead | | Page Fault Resolution | 4.2 µs | 3.6 µs | +14% slower | ver Microsoft Windows [Version 10.0.22000.160] >
OS Name: Microsoft Windows 11 Pro Insider Preview OS Version: 10.0.22000.160 N/A Build 22000.160