HSE: Heterogeneous-memory storage engine designed for SSDs
> https://github.com/hse-project/hseTheir benchmarks show significant gains compared to RocksDB.> https://github.com/spdk/rocksdbBut what I'd really like to see is a comparison against RocksDB using SPDK> https://dqtibwqq6s6ux.cloudfront.net/download/papers/Hitachi... 
Based on these results, SPDK performs significantly better than the kernel requiring only 1-2 cores to saturate IOPS on an NVMe SSD (compared to the kernel requiring 16)