Commit a2fbd991 authored by Jim Harris's avatar Jim Harris Committed by Daniel Verkamp
Browse files

fio_plugin: add norandommap=1 recommendation to README 



While here, also mention that the plugin only supports
a single thread currently.

Signed-off-by: default avatarJim Harris <james.r.harris@intel.com>
Change-Id: I265e59a89e77cd8ed26419e811aa2f36afcd37b3
parent d95d6822

examples/nvme/fio_plugin/README.md

+6 −0
Original line number Diff line number Diff line
@@ -38,3 +38,9 @@ To select NVMe devices, you simply pass an identifier as the filename in the for 


Remember that NVMe namespaces start at 1, not 0! Also, the notation uses '.' throughout,

not ':'. For example - 0000.04.00.0/1.



Currently the fio_plugin is limited to a single thread, so only one job is supported.



When testing random workloads, it is recommended to set norandommap=1.  fio's random map

processing consumes extra CPU cycles which will degrade performance over time with

the fio_plugin since all I/O are submitted and completed on a single CPU core.