On 03/15/2016 04:20 AM, Ley Foon Tan wrote:
Hi In the kernel v4.4 above, we can use polling mode for the NVMe data transfer with command below: echo 1 > /sys/block/nvme0n1/queue/io_poll We can see NVMe throughput increase with polling mode with dd command. Can we run fio with polling mode as well? If yes, what are the correct fio parameters/arguments should we use?
direct=1, and use one of the sync IO engines (psync would be a good one). And enable io_poll like you did above, then fio should be in polled mode.
-- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
