We can get 513558 IOPS in 4K read per nvme by fio but only 45146 IOPS per OSD.by rados.
Don't expect Ceph to fully utilize NVMe's, it's software and it's slow :) some colleagues tell that SPDK works out of the box, but almost doesn't increase performance, because the userland-kernel interaction isn't the bottleneck currently, it's Ceph code itself. I also tried once, but I couldn't make it work. When I have some spare NVMe's I'll make another attempt.
So... try it and share your results here :) we're all interested. -- With best regards, Vitaliy Filippov _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
