test_file_iops.sh

# IOPS (Input/Output Per Second)  

- hdparm 

``` bash
[@nmyjs_186_118 luxingjing]$ sudo hdparm -Tt /dev/sda
[sudo] password for luxingjing: 

/dev/sda:
 Timing cached reads:   17440 MB in  2.00 seconds = 8730.78 MB/sec
 Timing buffered disk reads: 602 MB in  3.00 seconds = 200.61 MB/sec
 ```
 
 - dd
 非专业测试工具，测试可能不准。
 ``` bash
 
 ```
 
 
 - fio
 
 顺序读写看BW，随机读写看IOPS参数。  
 
 ```bash
 # 随机读
 fio -filename=/dev/sda1 -direct=1 -iodepth 1 -thread -rw=randread -ioengine=psync -bs=4k -size=60G -numjobs=64 -runtime=10 -group_reporting -name=file

# 顺序读
fio -filename=/dev/sda1 -direct=1 -iodepth 1 -thread -rw=read -ioengine=psync -bs=4k -size=60G -numjobs=64 -runtime=10 -group_reporting -name=file

# 随机写
fio -filename=/dev/sda1 -direct=1 -iodepth 1 -thread -rw=randwrite -ioengine=psync -bs=4k -size=60G -numjobs=64 -runtime=10 -group_reporting -name=file

# 顺序写
$ fio -filename=/dev/sda1 -direct=1 -iodepth 1 -thread -rw=write -ioengine=psync -bs=4k -size=60G -numjobs=64 -runtime=10 -group_reporting -name=file

# 混合随机读写
 fio -filename=/dev/sda1 -direct=1 -iodepth 1 -thread -rw=randrw -rwmixread=30 -ioengine=psync -bs=4k -size=60G -numjobs=64 -runtime=10 -group_reporting -name=file -ioscheduler=noop



 
 ```