Tag Archives: SSD

How to check if your VPS SSD is Real- (IOPS benchmark)

Salam

I always wanted to check whether the VPS  i rent and mentioned Storage (SSD) spec is real ?

so I use a package “FIP (Flexible I/O) ” on my  CentOS VPS. so install FIO first :

wget http://pkgs.repoforge.org/fio/fio-2.1.10-1.el7.rf.x86_64.rpm
rpm -iv fio-2.1.10-1.el7.rf.x86_64.rpm

Now I run Random Read/Write Test , This will create a 4 GB file, and perform 4KB reads and writes using a 75%/25% (ie 3 reads are performed for every 1 write) split within the file, with 64 operations running at a time. The 3:1 ratio is a rough approximation of your typical database:

./fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=test --bs=4k --iodepth=64 --size=4G --readwrite=randrw --rwmixread=75

here is result:

Jobs: 1 (f=1): [m] [6.5% done] [39613K/13099K /s] [9903 /3274  iops] [eta 01m:12s]

this shows that so called SSD is performing 9873 read operations per second and 3291 write operations per second.

local SSD for a VPS might reach 40,000 and 10,000 respectively if the system is lightly loaded.

hope you enjoy and use it to make sure your VPS is real !!

Hossein Mehrara