On Wed, Jul 13, 2016 at 10:22 AM, Wendy Cheng <s.wendy.cheng at gmail.com> wrote: > 2) Could anyone pass the pointer on how to check whether a block device > supports the polling mode (and how to turn it on) ? Example: echo 0 > /sys/block/nvme0n1/queue/io_poll echo 1 > /sys/block/nvme0n1/queue/io_poll