root@fambox:~# fio --name=randread --rw=randread --bs=4k --ioengine=libaio --iodepth=64 --direct=1 --numjobs=1 --size=1G
randread: (g=0): rw=randread, bs=4K-4K/4K-4K, ioengine=libaio, iodepth=64
fio 1.59
Starting 1 process
Jobs: 1 (f=1): [r] [99.8% done] [7172K/0K /s] [1751 /0  iops] [eta 00m:03s]
randread: (groupid=0, jobs=1): err= 0: pid=2539
  read : io=1024.0MB, bw=678578 B/s, iops=165 , runt=1582340msec
    slat (usec): min=6 , max=652342 , avg=15.55, stdev=1702.87
    clat (usec): min=679 , max=1278.9K, avg=386219.43, stdev=231188.60
     lat (usec): min=690 , max=1278.9K, avg=386235.21, stdev=231192.44
    bw (KB/s) : min=   29, max= 9593, per=99.73%, avg=660.19, stdev=813.90
  cpu          : usr=0.08%, sys=99.76%, ctx=6335, majf=0, minf=68
  IO depths    : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=0.1%, >=64=100.0%
     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=0.1%, >=64=0.0%
     issued r/w/d: total=262144/0/0, short=0/0/0
     lat (usec): 750=0.08%, 1000=0.51%
     lat (msec): 2=0.06%, 4=0.02%, 10=0.51%, 20=1.83%, 50=7.45%
     lat (msec): 100=10.34%, 250=13.27%, 500=19.16%, 750=46.64%, 1000=0.14%
     lat (msec): 2000=0.01%

Run status group 0 (all jobs):
   READ: io=1024.0MB, aggrb=662KB/s, minb=678KB/s, maxb=678KB/s, mint=1582340msec, maxt=1582340msec

Disk stats (read/write):
  loop0: ios=0/0, merge=0/0, ticks=0/0, in_queue=0, util=0.00%
root@fambox:~# 
root@fambox:~# cat /proc/version 
Linux version 3.19.0-rc2-next20141231-1-iniza-small (sedat.dilek@gmail.com@fambox) (gcc version 4.9.2 (Ubuntu 4.9.2-0ubuntu1~12.04) ) #1 SMP Wed Dec 31 21:28:49 CET 2014


-dileks // 31-DEZ-2014