Unlock the Full Potential of NVMe Leverage IO Passthru for Enhanced Performance

passthru The "admin-passthru" and "io-passthru" commands send NVMe commands to either the administrative or the data part of the device. These com- mands ... Parameterized form of nvme_submit_io_passthru. This sets up and submits a struct nvme_passthru_cmd. Known values for opcode are defined in enum nvme_io_opcode. Nvme-cli uses NVME_IOCTL_IO_CMDs for "io-passthru" commands to cuse devices. This patch adds support for that IOCTL. Signed-off-by: Curt Bruns ... ... NVMe SSD. Running an I/O Test. To run a simple read/write test on your NVMe SSD, use the following command: sudo nvme io-passthru /dev/nvme0 ... Used for the data-direction for the command and required for commands sending/receiving data. Don't use both read and write at the same time. Looks like you'll have to use nvme io-passthru (with flags argument for fuse) and deal with the cdw values for slba and nlb yourself. Unprivileged access for passthrough: https://lore.kernel.org/linux-nvme/[email protected]/. Benchmarking. Please refer to the ... ... nvme-cli/pkg64/14.2/nvme-cli-1.1-x86_64-1alien.tgz || ++ ... io-passthru.1.gz -rw-r--r-- root/root 1073 2017-02-24 22:13 usr/man/man1 ... Mine didn't take cache='none' and therefore also not io='native ... Are there any other known good NVMe drives for pass through? Is ... VMDirectPath I/O (PCI passthrough) enables direct assignment of hardware PCI functions such as NVMe solid-state drives to a virtual machine.