End the Senseless Killing: Improving Memory Management for Mobile Operating Systems
summary
Marvin implements a runtime-and-OS co-designed memory manager for Android that reintroduces swapping with concrete mechanisms: ahead-of-time (AOT) swap, stubs and a reclamation table, object-granularity working-set tracking, and a swap-aware bookmarking GC. Prototype modifies ART on Pixel XL phones (Android 7.1.1), reclaims 500 MB in ~100 ms, supports >2× active concurrent apps versus stock Android, and reports runtime overheads within ~15% on Java-heavy benchmarks. Source code is on GitHub.
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chapters (17)
- 0:00Intro
- 0:22Disclaimers
- 0:44This talk
- 2:43Traditional swapping is not a solution
- 4:58Key insight
- 6:28Stubs
- 7:10Reclamation table
- 7:46Object access interposition
- 9:56Object-level working set estimation
- 11:03Bookmarking garbage collector
- 11:59Marvin implementation
- 12:28Evaluation
- 12:55Does Marvin let users run more apps?
- 14:35Does ahead-of-time swap work?
- 15:26What is Marvin's overhead?
- 16:05Related work
- 17:03Conclusion
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