FIO使用指南，fio使用方法

FIO使用指南，fio使用方法
前言

fio是測試IOPS的非常好的工具，用來對硬體進行壓力測試和驗證，支援13種不同的I/O引擎，包括:sync,mmap, libaio, posixaio, SG v3, splice, null, network, syslet, guasi, solarisaio 等等。

測試準備

工具：fio - Flexible IO Tester

官方網站：

http://freecode.com/projects/fio

http://brick.kernel.dk/snaps/

 

注意: 效能測試建議直接通過寫裸盤的方式進行測試，會得到較為真實的資料。但直接測試裸盤會破壞檔案系統結構，導致資料丟失，請在測試前確認磁碟中資料已備份。

CentOS可以直接使用yum安裝

#yum安裝yum install libaio-devel fio#手動安裝yum install libaio-develwget http://brick.kernel.dk/snaps/fio-2.2.10.tar.gztar -zxvf fio-2.2.10.tar.gzcd fio-2.2.10make $ make install

For gfio, gtk 2.18 (or newer), associated glib threads, and cairo are requiredto be installed.  gfio isn't built automatically and can be enabledwith a --enable-gfio option to configure. 樣本：對磁碟進行1024K順序寫fio cap_1024K_seq_write[global]ioengine=libaiobs=1024Krw=writeramp_time=6runtime=300direct=1iodepth=16#rwmixwrite=20time_based[test]filename=/dev/sdanumjobs=1結果：test: (g=0): rw=write, bs=1M-1M/1M-1M/1M-1M, ioengine=libaio, iodepth=16fio-2.8Starting 1 processJobs: 1 (f=1): [W(1)] [100.0% done] [0KB/68198KB/0KB /s] [0/66/0 iops] [eta 00m:00s]test: (groupid=0, jobs=1): err= 0: pid=4676: Thu Apr  7 17:22:37 2016  write: io=20075MB, bw=68464KB/s, iops=66, runt=300255msec   #執行多少IO，平均頻寬，線程已耗用時間    slat (usec): min=51, max=5732, avg=291.11, stdev=262.47          #提交延遲    clat (usec): min=1, max=2235.8K, avg=239043.28, stdev=153384.41   #完成延遲     lat (usec): min=367, max=2235.9K, avg=239337.72, stdev=153389.57 #回應時間    clat percentiles (usec):     |  1.00th=[  221],  5.00th=[  442], 10.00th=[ 1004], 20.00th=[108032],     | 30.00th=[228352], 40.00th=[248832], 50.00th=[257024], 60.00th=[268288],     | 70.00th=[280576], 80.00th=[301056], 90.00th=[342016], 95.00th=[477184],     | 99.00th=[806912], 99.50th=[864256], 99.90th=[1122304], 99.95th=[1171456],     | 99.99th=[1646592]    bw (KB  /s): min=  170, max=204800, per=100.00%, avg=68755.07, stdev=27034.84    lat (usec) : 2=0.01%, 4=0.13%, 50=0.06%, 100=0.26%, 250=1.04%    lat (usec) : 500=4.53%, 750=2.61%, 1000=1.33%    lat (msec) : 2=1.18%, 4=0.15%, 10=0.77%, 20=0.77%, 50=1.50%    lat (msec) : 100=4.43%, 250=23.48%, 500=53.23%, 750=3.09%, 1000=1.30%    lat (msec) : 2000=0.19%, >=2000=0.01%  cpu          : usr=0.03%, sys=2.11%, ctx=19066, majf=0, minf=7  IO depths    : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=103.8%, 32=0.0%, >=64=0.0%   #io隊列     submit    : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%  #單個IO提交要提交的IO數     complete  : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%       issued    : total=r=0/w=20060/d=0, short=r=0/w=0/d=0, drop=r=0/w=0/d=0     latency   : target=0, window=0, percentile=100.00%, depth=16    #IO完延遲的分布 Run status group 0 (all jobs):  WRITE: io=20075MB, aggrb=68464KB/s(group總頻寬), minb=68464KB/s(最小平均頻寬), maxb=68464KB/s(最大平均頻寬), mint=300255msec(group中線程的最短已耗用時間), maxt=300255msec(group中線程的最長已耗用時間) Disk stats (read/write):  sda: ios=23/41769(所有group總共執行的IO數), merge=0/149(總共發生的IO合并數), ticks=706/9102766(Number of ticks we kept the disk busy), in_queue=9105836(花費在隊列上的總共時間), util=100.00%(磁碟利用率) FAQ:1.執行報：No package 'gtk+-2.0' found，No package 'gthread-2.0' found，configure: gtk and gthread not found   A:yum install gtk2-devel2.執行fio -name test -runtime=30 -filename=/dev/sda3 -ioengine=libaio -direct=1 -bs=1024K -iodepth=16 -rw=write -time_based：   報：fio: /dev/sda3 appears mounted, and 'allow_mounted_write' isn't set. Aborting.   A：對sda壓測