The Memory Manager (the Mm component) in 22H2 introduces (previously only in Windows Server builds). When multiple processes map the same read-only DLL (e.g., ntdll.dll ), the kernel actively identifies identical pages via a SHA-256 hash stored in the PFN (Page Frame Number) database. On average, this reduces private working set size by 150–300 MB for typical productivity workloads.
| Metric | Windows 11 21H2 | Windows 11 22H2 | Windows 10 22H2 | | :--- | :--- | :--- | :--- | | | 2.1 µs | 1.7 µs | 2.8 µs | | Hard Page Faults (Teams + Chrome) | 1,240 per min | 190 per min | 980 per min | | Syscall overhead (NtQuerySystemInformation) | 118 ns | 97 ns | 135 ns | | Kernel memory commit (baseline) | 1.2 GB | 980 MB | 1.4 GB | | Game FPS variance (Shadow of TR) | ±12 fps | ±4 fps | ±9 fps | kernel os 22h2
This modified OS is tailored to maximize hardware efficiency by removing background "bloat" and system processes: The Memory Manager (the Mm component) in 22H2
In controlled benchmarks (Cinebench R23 multi-thread), 22H2 shows a 5–8% improvement in efficiency mode workloads. More importantly, maximum interrupt latency dropped by 22% for audio streaming tasks. | Metric | Windows 11 21H2 | Windows
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