ozone
fio
sudo apt-get install fio
orsudo yum install fio -y
;sudo fio --name=randwrite --ioengine=libaio --iodepth=1 --rw=randwrite --bs=4k --direct=0 --size=512M --numjobs=2 --runtime=240 --group_reporting
;- 2 jobs, each writing 512M to the disk;
- 2 files will be generated in the current folder at the end;