linux 磁盘性能测试工具,磁盘性能测试工具 flexible I/O tester

简介

fio is a tool that will spawn a number of threads or processes doing a particular type of I/O action as specified by the user. The typical use of fio is to write a job file matching the I/O load one wants to simulate.

相对而言，dd只是测试磁盘的物理性能，并且只是测试的磁盘顺序读写的带宽。但实际上磁盘性能的瓶颈往往是IOPS，这个是dd无法测试出来的。

Fio可以按照使用者的需求启动多个线程模拟各种不同的IO操作，测试出有文件系统的磁盘在实际的随机读写的工作模式下所能承受的实际压力。

下载

fio 下载:

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fio 手册:

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fio 文章：

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make & make install 即可

如果出现下面的错误：

CC gettime.o

In file included from fio.h:23,

from gettime.c:8:

os/os.h:15:20: error: libaio.h: No such file or directory

In file included from gettime.c:8:

fio.h:119: error: field 'iocb' has incomplete type

make: *** [gettime.o] Error 1

安装这两个包：

sudo apt-get install libaio1 libaio-dev

测试

在source code里面自带有测试的fio脚本，使用fio [filename] 即可进行测试，下面的结果是测试vmware 7.0中,NILFS文件系统随机读的测试结果：

rex@rexvm:~/下载/fio-1.36/examples$ fio aio-read

file1: (g=0): rw=randread, bs=128K-128K/128K-128K, ioengine=libaio, iodepth=4

file2: (g=0): rw=randread, bs=128K-128K/128K-128K, ioengine=libaio, iodepth=32

file3: (g=0): rw=randread, bs=128K-128K/128K-128K, ioengine=libaio, iodepth=8

file4: (g=0): rw=randread, bs=128K-128K/128K-128K, ioengine=libaio, iodepth=16

Starting 4 processes

file1: Laying out IO file(s) (1 file(s) / 512MB)

file2: Laying out IO file(s) (1 file(s) / 512MB)

file3: Laying out IO file(s) (1 file(s) / 512MB)

file4: Laying out IO file(s) (1 file(s) / 512MB)

Jobs: 1 (f=1): [r___] [100.0% done] [86426K/0K /s] [659/0 iops] [eta 00m:00s]

file1: (groupid=0, jobs=1): err= 0: pid=8637

read : io=524288KB, bw=24611KB/s, iops=192, runt= 21303msec

slat (usec): min=123, max=57781, avg=3508.71, stdev=8292.79

clat (usec): min=47, max=388155, avg=17137.44, stdev=43573.89

bw (KB/s) : min=10069, max=75520, per=23.88%, avg=23504.13, stdev=12992.39

cpu  : usr=0.15%, sys=20.28%, ctx=672, majf=0, minf=156

IO depths  : 1=0.1%, 2=0.1%, 4=99.9%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%

submit  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%

complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%

issued r/w: total=4096/0, short=0/0

lat (usec): 50=2.88%, 100=24.56%, 250=1.22%, 500=0.46%, 750=4.10%

lat (usec): 1000=9.25%

lat (msec): 2=14.23%, 4=15.43%, 10=1.05%, 20=2.95%, 50=16.33%

lat (msec): 100=2.95%, 250=3.61%, 500=0.95%

file2: (groupid=0, jobs=1): err= 0: pid=8638

read : io=524288KB, bw=26222KB/s, iops=204, runt= 19994msec

slat (usec): min=123, max=81954, avg=4452.41, stdev=9360.67

clat (msec): min=7, max=710, avg=148.20, stdev=64.75

bw (KB/s) : min= 168, max=34048, per=27.30%, avg=26875.55, stdev=5675.16

cpu  : usr=0.10%, sys=24.71%, ctx=678, majf=0, minf=1052

IO depths  : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.2%, 16=0.4%, 32=99.2%, >=64=0.0%

submit  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%

complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.1%, 64=0.0%, >=64=0.0%

issued r/w: total=4096/0, short=0/0

lat (msec): 10=0.10%, 20=0.12%, 50=0.71%, 100=9.42%, 250=83.89%

lat (msec): 500=5.44%, 750=0.32%

file3: (groupid=0, jobs=1): err= 0: pid=8639

read : io=524288KB, bw=26203KB/s, iops=204, runt= 20009msec

slat (usec): min=124, max=158833, avg=4322.76, stdev=9381.58

clat (usec): min=47, max=457767, avg=34494.35, stdev=47974.57

bw (KB/s) : min=13810, max=41306, per=27.00%, avg=26578.39, stdev=5382.38

cpu  : usr=0.20%, sys=23.35%, ctx=654, majf=0, minf=284

IO depths  : 1=0.1%, 2=0.1%, 4=0.1%, 8=99.8%, 16=0.0%, 32=0.0%, >=64=0.0%

submit  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%

complete  : 0=0.0%, 4=100.0%, 8=0.1%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%

issued r/w: total=4096/0, short=0/0

lat (usec): 50=0.32%, 100=2.37%, 250=0.20%, 500=0.07%, 750=1.03%

lat (usec): 1000=2.42%

lat (msec): 2=4.91%, 4=9.64%, 10=9.94%, 20=5.91%, 50=49.68%

lat (msec): 100=7.32%, 250=5.08%, 500=1.12%

file4: (groupid=0, jobs=1): err= 0: pid=8640

read : io=524288KB, bw=26301KB/s, iops=205, runt= 19934msec

slat (usec): min=124, max=65601, avg=4483.65, stdev=9360.13

clat (msec): min=1, max=459, avg=72.36, stdev=51.90

bw (KB/s) : min= 1237, max=39936, per=27.08%, avg=26655.42, stdev=5750.57

cpu  : usr=0.14%, sys=24.12%, ctx=668, majf=0, minf=540

IO depths  : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.2%, 16=99.6%, 32=0.0%, >=64=0.0%

submit  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%

complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%

issued r/w: total=4096/0, short=0/0

lat (msec): 2=0.02%, 4=0.68%, 10=0.78%, 20=1.17%, 50=27.51%

lat (msec): 100=56.42%, 250=11.06%, 500=2.34%

Run status group 0 (all jobs):

READ: io=2048MB, aggrb=98443KB/s, minb=25201KB/s, maxb=26932KB/s, mint=19934msec, maxt=21303msec

Disk stats (read/write):

sdb: ios=16543/3236, merge=0/0, ticks=234540/23416, in_queue=257840, util=37.67%