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 !!