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root@storage-lab-00:/tmp# writefile: (g=0): rw=write, bs=4K-4K/4K-4K/4K-4K, ioengine=libaio, iodepth=200
fio-2.1.3
Starting 1 process
Jobs: 1 (f=1): [W] [100.0% done] [0KB/3792KB/0KB /s] [0/948/0 iops] [eta 00m:00s]
writefile: (groupid=0, jobs=1): err= 0: pid=13966: Fri Nov 28 08:09:41 2014
  write: io=10240MB, bw=9988.4KB/s, iops=2497, runt=1049803msec
    slat (usec): min=0, max=613872, avg=387.12, stdev=2106.17
    clat (msec): min=9, max=875, avg=79.70, stdev=61.80
     lat (msec): min=9, max=877, avg=80.09, stdev=62.06
    clat percentiles (msec):
     |  1.00th=[   20],  5.00th=[   27], 10.00th=[   32], 20.00th=[   40],
     | 30.00th=[   46], 40.00th=[   52], 50.00th=[   59], 60.00th=[   65],
     | 70.00th=[   74], 80.00th=[  111], 90.00th=[  180], 95.00th=[  212],
     | 99.00th=[  285], 99.50th=[  322], 99.90th=[  408], 99.95th=[  537],
     | 99.99th=[  668]
    bw (KB  /s): min=  873, max=21904, per=100.00%, avg=10019.79, stdev=4549.77
    lat (msec) : 10=0.01%, 20=1.36%, 50=35.47%, 100=42.16%, 250=18.81%
    lat (msec) : 500=2.13%, 750=0.06%, 1000=0.01%
  cpu          : usr=3.46%, sys=6.10%, ctx=1151109, majf=0, minf=28
  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=0.0%, >=64=0.1%
     issued    : total=r=0/w=2621440/d=0, short=r=0/w=0/d=0

Run status group 0 (all jobs):
  WRITE: io=10240MB, aggrb=9988KB/s, minb=9988KB/s, maxb=9988KB/s, mint=1049803msec, maxt=1049803msec

Disk stats (read/write):
  vdb: ios=0/2621880, merge=0/238, ticks=0/66893400, in_queue=66892456, util=100.00%