On Thu, Feb 1, 2018 at 7:59 PM, Boaz Harrosh <boazh@xxxxxxxxxx> wrote: > On 01/02/18 20:34, Chuck Lever wrote: > <> >> This work was also presented at the SNIA Persistent Memory Summit last week. >> The use case of course is providing a user space platform for the development >> and deployment of memory-based file systems. The value-add of this kind of >> file system is ultra-low latency, which is a challenge for the current most >> popular such framework, FUSE. I can see the numbers being very impressive and very happy to see progress being made in this field. What I'd also really be interested to see is where those speedups come from. As of linux-4.2/libfuse-3.0 there is a scalability improvement, that can be enabled with the "-o clone_fd" option. This option creates per-thread queues, which are prerequisite to achieving full CPU/NUMA affinity for request processing. Even just turning of "clone_fd" might improve the latency numbers for FUSE. Thanks, Miklos
