FlacIO: Flat and Collective I/O for Container Image Service
summary
FlacIO implements a new runtime image abstraction plus a kernel runtime page cache and a userland FlacIO driver to replace storage-oriented images with memory-oriented service images. The prototype records I/O (io-checker), generates deduplicated runtime images in a registry, and injects pages at cold start; it cuts cold startup latency up to 23× vs full-image and 4.6× vs lazy loading, uses ~5% extra storage, reduces network traffic and memory footprint, and yields 2.25× and 1.7× speedups on object-store and ML workloads.
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chapters (13)
- 0:00FlacIO introduction
- 1:42Container image loading challenges
- 3:06Cold startup bottlenecks
- 4:10Image object design
- 5:37FlacIO architecture
- 7:25Runtime image generation
- 9:30Image organization and deduplication
- 10:57Cold startup with FlacIO
- 12:41FlacIO integration
- 13:45Performance evaluation
- 15:09Tradeoffs and overhead
- 15:49Real-world results
- 16:32Conclusion
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