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blk-switch Application Steering for persistent loads
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Classroom Contents
Rearchitecting Linux Storage Stack for µs Latency and High Throughput
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- 1 Intro
- 2 Widespread belief: Linux can't achieve ps-scale latency & high throughput
- 3 Performance of Existing Storage Stacks Applications accessing in-memory data in remote servers (single-core case)
- 4 blk-switch Summary
- 5 blk-switch Key Insight • Observation: Today's Linux storage stack is conceptually similar to network switches!
- 6 A deeper dive into blk-switch architecture
- 7 blk-switch Prioritization
- 8 blk-switch Request Steering for transient loads
- 9 blk-switch Application Steering for persistent loads
- 10 blk-switch Evaluation Setup • Implemented entirely in the Linux kernel with minimal changes (LOC-928)
- 11 High Contention Scenario (In-memory)
- 12 blk-switch Performance Breakdown
- 13 Summary . It is possible to achieve pes-scale latency and high throughput with Linux
