Benchmark IOPS

cd /root && yum -y groupinstall "Development Tools" && 
wget https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/ioping/ioping-0.8.tar.gz && tar zxvf ioping-0.8.tar.gz && cd ioping-0.8 && make && make install

Test on RAID1 SSD drive

ioping -c 10 /
4.0 KiB from / (ext4 /dev/loop1): request=1 time=22 us
4.0 KiB from / (ext4 /dev/loop1): request=2 time=17 us
4.0 KiB from / (ext4 /dev/loop1): request=3 time=40 us
4.0 KiB from / (ext4 /dev/loop1): request=4 time=34 us
4.0 KiB from / (ext4 /dev/loop1): request=5 time=30.8 ms
4.0 KiB from / (ext4 /dev/loop1): request=6 time=39 us
4.0 KiB from / (ext4 /dev/loop1): request=7 time=629.6 ms
4.0 KiB from / (ext4 /dev/loop1): request=8 time=21 us
4.0 KiB from / (ext4 /dev/loop1): request=9 time=18 us
4.0 KiB from / (ext4 /dev/loop1): request=10 time=38 us

Test RAID1 NVMe Gen3 x4 SSD drive

ioping -c 10 /
4.0 KiB from / (ext4 /dev/mapper/VolGroupStore-vm--101--disk--1): request=1 time=110 us
4.0 KiB from / (ext4 /dev/mapper/VolGroupStore-vm--101--disk--1): request=2 time=136 us
4.0 KiB from / (ext4 /dev/mapper/VolGroupStore-vm--101--disk--1): request=3 time=150 us
4.0 KiB from / (ext4 /dev/mapper/VolGroupStore-vm--101--disk--1): request=4 time=131 us
4.0 KiB from / (ext4 /dev/mapper/VolGroupStore-vm--101--disk--1): request=5 time=142 us
4.0 KiB from / (ext4 /dev/mapper/VolGroupStore-vm--101--disk--1): request=6 time=145 us
4.0 KiB from / (ext4 /dev/mapper/VolGroupStore-vm--101--disk--1): request=7 time=144 us
4.0 KiB from / (ext4 /dev/mapper/VolGroupStore-vm--101--disk--1): request=8 time=125 us
4.0 KiB from / (ext4 /dev/mapper/VolGroupStore-vm--101--disk--1): request=9 time=123 us
4.0 KiB from / (ext4 /dev/mapper/VolGroupStore-vm--101--disk--1): request=10 time=135 us
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