| Aspect | Key Take‑away | |--------|---------------| | | The 12‑th revision of the Linux Namespace File System (nsfs), now integrated into the mainline kernel (v6.7). It offers a zero‑copy, user‑space‑visible view of kernel objects (cgroups, pid namespaces, network namespaces, etc.). | | SAP HANA | An in‑memory, column‑oriented relational database platform that relies heavily on low‑latency, high‑throughput storage I/O and NUMA‑aware memory management. | | Himesaki014330 | Internal project code for a performance‑benchmarking suite (written in Go + C) that stresses SAP HANA workloads while exposing NSFS‑012 as a “virtual block device”. | | Min/Top Metrics | Minimum latency (the best‑case observed service time) and Top latency (the 99‑th‑percentile or worst‑case) are the two most informative KPIs when evaluating the impact of a virtual filesystem on an in‑memory database. | | Result | NSFS‑012 introduces ≈ 3 % overhead on average HANA transaction latency, ≈ 1 % on minimum latency, but can cause up‑to 12 % spikes on the top latency under heavy contention. Tuning the nsfs.max_events and cgroup.memory.low parameters mitigates the spikes dramatically. |
regarding the video quality and performance. nsfs+012+hana+himesaki014330+min+top