02-07-2017 08:53 PM
The SanDisk SD7SB7S010T1122 , 1 TB drive is giving 1/3rd the advertised performance numbers from this data sheet:
The disk cache are all enabled:
# hdparm -W /dev/sda
# hdparm -A /dev/sda
]# hdparm -a /dev/sda
The benchmark tool used was fio with below config file and random read:
The test setup was:
The results were:
# fio t1.fio
Run status group 0 (all jobs):
Disk stats (read/write):
We are getting ~38K IOPS whereas the advertised performance number for random read as per data sheet is 98K !
Any clues/suggestions as what might be hampering performance and any way to tune it to improve the performance numbers.
Thanks in advance !