1、测试环境是PC服务器，磁盘用的是oracle acfs
2、创建文件

[root@ ogg]# sysbench --test=fileio --num-threads=32 --file-total-size=20G --file-test-mode=rndrw prepare
sysbench 0.5: multi-threaded system evaluation benchmark
128 files, 163840Kb each, 20480Mb total
Creating files for the test...
Extra file open flags: 0
Creating file test_file.0
Creating file test_file.1
Creating file test_file.2
.........................
Creating file test_file.125
Creating file test_file.126
Creating file test_file.127
21474836480 bytes written in 90.29 seconds (226.81 MB/sec).

默认创建了128个文件，块大小16K，创建时间90秒，每秒226M
3、测试随机读写

[root@ ogg]# sysbench --test=fileio --num-threads=32 --file-total-size=20G --file-test-mode=rndrw run
sysbench 0.5: multi-threaded system evaluation benchmark
Running the test with following options:
Number of threads: 32
Random number generator seed is 0 and will be ignored
Extra file open flags: 0
128 files, 160Mb each
20Gb total file size
Block size 16Kb
Number of IO requests: 10000
Read/Write ratio for combined random IO test: 1.50
Periodic FSYNC enabled, calling fsync() each 100 requests.
Calling fsync() at the end of test, Enabled.
Using synchronous I/O mode
Doing random r/w test
Threads
Operations performed: 5997 reads, 4003 writes, 12800 Other = 22800 Total
Read 93.703Mb Written 62.547Mb Total transferred 156.25Mb (90.321Mb/sec)
5780.54 Requests/sec executed
General statistics:
total time: 1.7299s
total number of events: 10000
total time taken by event execution: 0.1696s
response time:
min: 0.01ms
avg: 0.02ms
max: 0.24ms
approx. 95 percentile: 0.03ms
Threads fairness:
events (avg/stddev): 312.5000/88.82
execution time (avg/stddev): 0.0053/0.00

默认随机读写的比例是3:2，总传输156M，每秒90M。
完成93M读，62M写的总时间是1.729s。
4、清除测试文件

[root@ ogg]# sysbench --test=fileio --num-threads=32 --file-total-size=20G --file-test-mode=rndrw cleanup
sysbench 0.5: multi-threaded system evaluation benchmark
Removing test files...

ITPub博客

测试软件：sysbench-fileio