Can you explain a bit more about why you want to use AIO? Are you referring to Linux AIO or POSIX AIO? If you want to do a performance comparison of Linux AIO and the SPDK NVMe driver then the perf tool is your best bet. You can run the perf tool against a block device using Linux AIO by binding your NVMe device to the kernel ("./scripts/setup.sh reset" will hand them all back to the kernel) and then doing something like: ./perf -q 1 -s 4096 -w read -t 10 /dev/nvme0n1 /dev/nvme1n1 -----Original Message----- From: SPDK [mailto:spdk-bounces@lists.01.org] On Behalf Of Bhadauria, Varun Sent: Wednesday, June 15, 2016 4:30 PM To: Storage Performance Development Kit <spdk(a)lists.01.org&gt; Subject: [SPDK] SPDK air examples Hello Are there any SPDK examples which use AIO? Perf.c has very little documentation in the usage for AIO. Regards, Varun Bhadauria _______________________________________________ SPDK mailing list SPDK(a)lists.01.org https://lists.01.org/mailman/listinfo/spdk