使用sysbench 对磁盘IO进行测试

安装

 

centos

yum install sysbench

mac

brew install sysbench

 

 

wl@wldeiMac:/tmp$ sysbench --test=fileio --file-total-size=2G prepare
2147483648 bytes written in 4.78 seconds (428.25 MiB/sec).

对当前目录下写入共2G的文件,当前目录下就会出现很多个8MB大小的文件

Mac 闪存可以达到650MB/SEC

 

 

 

 

sysbench --test=fileio --num-threads=10 --file-total-size=2G --file-test-mode=rndrw --report-interval=1 run

参数解读

--num-threads=10 开启10个线程

--file-total-size=2G 测试文件总大小2G

--file-test-mode=rndrw 文件读写模式 混合读写

 --report-interval=1 每隔一秒输出一次结果

 

 

 

Threads started!
[ 1s ] reads: 289.53 MiB/s writes: 193.03 MiB/s fsyncs: 39424.46/s latency (ms,95%): 0.417
[ 2s ] reads: 340.99 MiB/s writes: 227.32 MiB/s fsyncs: 46640.08/s latency (ms,95%): 0.395
[ 3s ] reads: 375.53 MiB/s writes: 250.25 MiB/s fsyncs: 51195.05/s latency (ms,95%): 0.388
[ 4s ] reads: 396.08 MiB/s writes: 264.17 MiB/s fsyncs: 54110.92/s latency (ms,95%): 0.388
[ 5s ] reads: 442.64 MiB/s writes: 295.09 MiB/s fsyncs: 60485.17/s latency (ms,95%): 0.388
[ 6s ] reads: 474.70 MiB/s writes: 316.36 MiB/s fsyncs: 64776.91/s latency (ms,95%): 0.388
[ 7s ] reads: 501.59 MiB/s writes: 334.39 MiB/s fsyncs: 68502.04/s latency (ms,95%): 0.388
[ 8s ] reads: 538.96 MiB/s writes: 359.41 MiB/s fsyncs: 73502.49/s latency (ms,95%): 0.381
[ 9s ] reads: 567.17 MiB/s writes: 378.12 MiB/s fsyncs: 77543.71/s latency (ms,95%): 0.367
[ 10s ] reads: 554.22 MiB/s writes: 369.48 MiB/s fsyncs: 76668.79/s latency (ms,95%): 0.354
File operations:
    reads/s:                      28671.85
    writes/s:                     19114.57
    fsyncs/s:                     61289.42
Throughput:
    read, MiB/s:                  448.00
    written, MiB/s:               298.67
General statistics:
    total time:                          10.0047s
    total number of events:              1090108
Latency (ms):
         min:                                    0.00
         avg:                                    0.09
         max:                                   36.39
         95th percentile:                        0.39
         sum:                                96843.92
Threads fairness:
    events (avg/stddev):           109010.8000/760.11
    execution time (avg/stddev):   9.6844/0.00

95%的相应时间为 0.39毫秒

吞吐量

读 448MB每秒

写 298MB每秒

 

 

 sysbench --test=fileio help

对于文件IO测试的其他参数

 

雨雀 https://www.yuque.com/yuanminghang/ex83zv/rur1kc