Upstreaming plan (5/4/2022) #68
Description
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Design overview: facebook#102
| Grouping | Description | Intel PR | Meta PR | Notes |
|---|---|---|---|---|
| Independent preparatory changes | ||||
| Shortened critical section | facebook#132 | Performance improvement | ||
| Per-pool cache stats | facebook#141 | Benchmarking stats improvement | ||
| Add value validation to cachebench | facebook#131 | Benchmarking improvement | ||
| Alternative locking approach for item movement | #36 | Performance improvement | ||
| File-mapped memory support in shared memory manager | facebook#146 | Enables access to PMEM memory | ||
| Initial set of changes to config API | facebook#138 | First mention of memory tiers, only one DRAM tier is allowed | ||
| Tiers enabling changes | ||||
| Enable tiers in allocator | TBD | The feature is complete on the Intel fork | ||
| Enable tiers in config API | TBD | The feature is complete on the Intel fork | ||
| Enable multi-tier eviction | TBD | The feature is complete on the Intel fork | ||
| Future work | ||||
| Scalable eviction policy | TBD | Partition 2Q into independent structures so they use separate locks per region | ||
| Background eviction thread | TBD | Performance improvement |