FIO是測試IOPS的非常好的工具，用來對硬件進行壓力測試和驗證，支持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。?fio 官網(wǎng)地址：http://freshmeat.net/projects/fio/?一，FIO安裝?wget http://brick.kernel.dk/snaps/fio-2.0.7.tar.gz?yum install libaio-devel?tar -zxvf fio-2.0.7.tar.gz?cd fio-2.0.7?make?make install?二，隨機讀測試：?隨機讀：?fio -filename=/dev/sdb1 -direct=1 -iodepth 1 -thread -rw=randread -ioengine=psync -bs=16k -size=200G -numjobs=10 -runtime=1000 -group_reporting -name=mytest?說明：?filename=/dev/sdb1 測試文件名稱，通常選擇需要測試的盤的data目錄。?direct=1 測試過程繞過機器自帶的buffer。使測試結果更真實。?rw=randwrite 測試隨機寫的I/O?rw=randrw 測試隨機寫和讀的I/O?bs=16k 單次io的塊文件大小為16k?bsrange=512-2048 同上，提定數(shù)據(jù)塊的大小范圍?size=5g 本次的測試文件大小為5g，以每次4k的io進行測試。?numjobs=30 本次的測試線程為30.?runtime=1000 測試時間為1000秒，如果不寫則一直將5g文件分4k每次寫完為止。?ioengine=psync io引擎使用pync方式?rwmixwrite=30 在混合讀寫的模式下，寫占30%?group_reporting 關于顯示結果的，匯總每個進程的信息。?此外?lockmem=1g 只使用1g內(nèi)存進行測試。?zero_buffers 用0初始化系統(tǒng)buffer。?nrfiles=8 每個進程生成文件的數(shù)量。?順序讀：?fio -filename=/dev/sdb1 -direct=1 -iodepth 1 -thread -rw=read -ioengine=psync -bs=16k -size=200G -numjobs=30 -runtime=1000 -group_reporting -name=mytest?隨機寫：?fio -filename=/dev/sdb1 -direct=1 -iodepth 1 -thread -rw=randwrite -ioengine=psync -bs=16k -size=200G -numjobs=30 -runtime=1000 -group_reporting -name=mytest?順序寫：?fio -filename=/dev/sdb1 -direct=1 -iodepth 1 -thread -rw=write -ioengine=psync -bs=16k -size=200G -numjobs=30 -runtime=1000 -group_reporting -name=mytest?混合隨機讀寫：?fio -filename=/dev/sdb1 -direct=1 -iodepth 1 -thread -rw=randrw -rwmixread=70 -ioengine=psync -bs=16k -size=200G -numjobs=30 -runtime=100 -group_reporting -name=mytest -ioscheduler=noop?三，實際測試范例：?[root@localhost ~]# fio -filename=/dev/sdb1 -direct=1 -iodepth 1 -thread -rw=randrw -rwmixread=70 -ioengine=psync -bs=16k -size=200G -numjobs=30 -runtime=100 -group_reporting -name=mytest1?mytest1: (g=0): rw=randrw, bs=16K-16K/16K-16K, ioengine=psync, iodepth=1?...?mytest1: (g=0): rw=randrw, bs=16K-16K/16K-16K, ioengine=psync, iodepth=1?fio 2.0.7?Starting 30 threads?Jobs: 1 (f=1): [________________m_____________] [3.5% done] [6935K/3116K /s] [423 /190 iops] [eta 48m:20s] s]?mytest1: (groupid=0, jobs=30): err= 0: pid=23802?read : io=1853.4MB, bw=18967KB/s, iops=1185 , runt=100058msec?clat (usec): min=60 , max=871116 , avg=25227.91, stdev=31653.46?lat (usec): min=60 , max=871117 , avg=25228.08, stdev=31653.46?clat percentiles (msec):?| 1.00th=[ 3], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8],?| 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 19],?| 70.00th=[ 26], 80.00th=[ 37], 90.00th=[ 57], 95.00th=[ 79],?| 99.00th=[ 151], 99.50th=[ 202], 99.90th=[ 338], 99.95th=[ 383],?| 99.99th=[ 523]?bw (KB/s) : min= 26, max= 1944, per=3.36%, avg=636.84, stdev=189.15?write: io=803600KB, bw=8031.4KB/s, iops=501 , runt=100058msec?clat (usec): min=52 , max=9302 , avg=146.25, stdev=299.17?lat (usec): min=52 , max=9303 , avg=147.19, stdev=299.17?clat percentiles (usec):?| 1.00th=[ 62], 5.00th=[ 65], 10.00th=[ 68], 20.00th=[ 74],?| 30.00th=[ 84], 40.00th=[ 87], 50.00th=[ 89], 60.00th=[ 90],?| 70.00th=[ 92], 80.00th=[ 97], 90.00th=[ 120], 95.00th=[ 370],?| 99.00th=[ 1688], 99.50th=[ 2128], 99.90th=[ 3088], 99.95th=[ 3696],?| 99.99th=[ 5216]?bw (KB/s) : min= 20, max= 1117, per=3.37%, avg=270.27, stdev=133.27?lat (usec) : 100=24.32%, 250=3.83%, 500=0.33%, 750=0.28%, 1000=0.27%?lat (msec) : 2=0.64%, 4=3.08%, 10=20.67%, 20=19.90%, 50=17.91%?lat (msec) : 100=6.87%, 250=1.70%, 500=0.19%, 750=0.01%, 1000=0.01%?cpu : usr=1.70%, sys=2.41%, ctx=5237835, majf=0, minf=6344162?IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 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 : total=r=118612/w=50225/d=0, short=r=0/w=0/d=0?Run status group 0 (all jobs):?READ: io=1853.4MB, aggrb=18966KB/s, minb=18966KB/s, maxb=18966KB/s, mint=100058msec, maxt=100058msec?WRITE: io=803600KB, aggrb=8031KB/s, minb=8031KB/s, maxb=8031KB/s, mint=100058msec, maxt=100058msec?Disk stats (read/write):?sdb: ios=118610/50224, merge=0/0, ticks=2991317/6860, in_queue=2998169, util=99.77%?主要查看以上粗體部分的iops?

轉載于:https://blog.51cto.com/liuxin1982/1016517

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