Skip to content

Instantly share code, notes, and snippets.

@lukaszstolarczuk

lukaszstolarczuk/MmapSeqR.fio

Created September 3, 2018 12:27
Show Gist options
  • Star 0 You must be signed in to star a gist
  • Fork 0 You must be signed in to fork a gist
  • Save lukaszstolarczuk/939a1241485d51ec7947ad9caf26d00b to your computer and use it in GitHub Desktop.
Save lukaszstolarczuk/939a1241485d51ec7947ad9caf26d00b to your computer and use it in GitHub Desktop.
Download ZIP
Example of FIO workload for mmap engine
Raw
MmapSeqR.fio
#
# run command for this workload:
# numactl -N 0 fio MmapSeqR.fio # it binds this FIO workload to CPU 0 only. It should be set according to /dev/pmem6 socket's number
#
[global]
thread
group_reporting
norandommap
overwrite=1
thinktime=0
sync=0
direct=0
ioengine=mmap
#
# Important note: this workload is run on a raw device, no file system, no mounting
filename=/dev/pmem6
size=1TB
offset_increment=50G # each of 'numjobs' will get its own space within the device
time_based
runtime=300
ramp_time=30
[SeqR]
bs=4k
numjobs=20 # depending on CPU core count more can be better, but also can be a bottleneck
iodepth=1
rw=randrw
rwmixread=100
percentage_random=0
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment