[세미나 안내] – Rearchitecting Linux Storage Stack for Remote SSD access

운영체제 연구실 여러분 안녕하세요.

2023년 2월 10일 운영체제 연구실에서 주최하는 온라인 세미나가 열렸습니다.

이번 세미나의 주제는 “Rearchitecting Linux Storage Stack for Remote SSD access” 로 성균관대학교 황재현 교수님이 연사로 수고해주셨습니다.

세미나의 초록은 다음과 같습니다.

There is a widespread belief in the community that it is not possible to achieve high throughput and µs-scale tail latency when using the
Linux kernel stack. Two most frequently cited arguments are (1) Linux has high CPU overheads; and (2) the resource multiplexing principle is so firmly entrenched in Linux that its performance stumbles when multiple applications compete for host resources. I will demonstrate that the above belief may be misplaced, at least for remote storage (SSD) access. In particular, I will present a new Linux storage stack architecture that achieves (1) high throughput comparable to NVMe-over-RDMA and (2) µs-scale latency, even when tens of applications compete for host resources while performing operations at throughput close to hardware capacity. Such a performance can be achieved without any modification in applications, network hardware, kernel CPU schedulers and/or kernel network stack.