By the way, it is always needed to execute the ./<spdk_root_dir>/scripts/setup.sh
A readme document can also be found at
From: SPDK [mailto:firstname.lastname@example.org] On Behalf Of Daniel Verkamp
Sent: Saturday, January 21, 2017 6:25 AM
To: Storage Performance Development Kit <spdk(a)lists.01.org>; spdk(a)ml01.01.org
Subject: Re: [SPDK] How to use the fio plugin
On 01/20/2017 03:11 PM, Henrique Fingler wrote:
I'm trying to run some fio benchmarks and it doesn't seem to
me. The example in GitHub
doesn't work (says "size=" is required) and it's very unclear if there
needs to be any configuration to point to the device.
It seems that when I run it everything goes straight to the root
filesystem (drive gets saturated with writes, all terminals freeze) or
memory (ungodly throughputs). Here's one input file:
And I get:
Run status group 0 (all jobs): READ: io=10227MB, aggrb=10227MB/s,
minb=10227MB/s, maxb=10227MB/s, mint=1000msec, maxt=1000msec
Am I using it correctly? Something seems off. Also, my root filesystem
gets saturated with writes. I can easily notice it using dstat. Is
Could anyone give me a pointer or an example which works? My end goal
is to do some random writes benchmarks.
When using the SPDK NVMe fio_plugin, you need to specify a filename in a special format.
See examples/nvme/fio_plugin/README.md for the format.
fio yourconf.fio --filename=0000.04.00.0/1
Assuming yourconf.fio is the configuration above, this would run FIO against the NVMe
device at PCI domain 0, bus 4, device 0, function 0, NVMe namespace ID 1.
There should not be any I/O activity to your root filesystems - all I/O should bypass the
kernel stack entirely if it is being processed by the SPDK FIO plugin.
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