Unleashing Zoned UFS: Cross-Layer Optimizations for Next-Generation Mobile Storage
summary
Zone UFS replaces page maps with zone-level mapping (zones are 1,056 MB, 16 KB pages) and implements a device-side GABM buffer manager, a driver/block-layer enforced write-ordering path, and a proactive GC framework that reclaims space in the background. Built on a Pixel 10 Pro, the implementation sustains over 2x higher write throughput under heavy fragmentation and cuts game load time by 14% while keeping read latency stable.
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chapters (15)
- 0:00Zoned UFS and cross-layer design
- 1:23Mobile storage limitations
- 3:27Zoned Storage vs fragmentation
- 4:33Mobile Zoned UFS challenges
- 5:35UFS device architecture
- 6:21Zone-aware buffer management
- 7:02Strict write ordering in UFS
- 8:05Garbage collection for responsiveness
- 8:48Evaluation on Google Pixel 10 Pro
- 9:09Random read performance
- 9:51GABM vs sequential writes
- 10:11Performance under fragmentation
- 11:36Fragmentation behavior
- 11:59Application performance gains
- 12:41Conclusion and future work
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