We present TeRM in this paper, an efficient approach to extending RDMA-attached memory with SSD. It onloads exception handling (i.e., RNIC page fault) from hardware to software. The experimental results on the microbenchmark and unmodified RDMA-based storage systems demonstrate the effectiveness of TeRM.

We propose GOGETAFS, a novel DedupFS that leverages the file system mature I/O path and crash consistency mechanism to improve deduplication throughput. The key insight is to build a DedupFS with logical-fingerprint-physical (LFP), which is a novel mapping technique that merges the deduplication FP2P entry with the file system L2P entry. We implement and evaluate GOGETAFS in both PM and (emulated) ULL SSD platforms. The results suggest that GogetaFS outperforms existing DedupFSes, sometimes by an order of magnitude (e.g., in the SSD platform), and achieves minimized deduplication metadata maintenance overheads.

This paper has described the performance of Intel’s new Optane DIMMs across micro- and macro-level benchmarks. In doing so, we have extracted actionable guidelines for programmers to fully utilize these devices’ strengths. The devices have performance characteristics that lie in-between traditional storage and memory devices, yet they also present interesting performance pathologies. We believe that the devices will be useful in extending the quantity of memory available and in providing low-latency storage.