磁碟效能測試工具 flexible I/O tester

skuary發表於2011-11-09
Flex
簡介

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.

相對而言，dd只是測試磁碟的物理效能，並且只是測試的磁碟順序讀寫的頻寬。但實際上磁碟效能的瓶頸往往是IOPS，這個是dd無法測試出來的。

Fio可以按照使用者的需求啟動多個執行緒模擬各種不同的IO操作，測試出有檔案系統的磁碟在實際的隨機讀寫的工作模式下所能承受的實際壓力。

下載

fio 下載:

[http://freshmeat.net/projects/fio/]


fio 手冊:

[http://linux.die.net/man/1/fio]


fio 文章：

[http://www.linux.com/archive/feature/131063]


make & make install 即可

如果出現下面的錯誤： 

    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

安裝這兩個包： 

sudo apt-get install libaio1 libaio-dev

測試

在source code裡面自帶有測試的fio指令碼，使用fio [filename] 即可進行測試，下面的結果是測試vmware 7.0中,NILFS檔案系統隨機讀的測試結果： 

rex@rexvm:~/下載/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%

來自 “ ITPUB部落格 ” ，連結：http://blog.itpub.net/25618347/viewspace-713869/，如需轉載，請註明出處，否則將追究法律責任。

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