http://pkgs.repoforge.org/fio/

# wget "http://pkgs.repoforge.org/fio/fio-2.0.9-1.el6.rf.x86_64.rpm"
# rpm -ivh fio-2.0.9-1.el6.rf.x86_64.rpm
# rpm -qa | grep fio
fio-2.0.9-1.el6.rf.x86_64

# fio --filename=/tmp/file2G --direct=1 --rw=randwrite --bs=1m --size=2G --numjobs=4 --runtime=10 --group_reporting --name=file1
file1: (g=0): rw=randwrite, bs=1M-1M/1M-1M/1M-1M, ioengine=sync, iodepth=1
...
file1: (g=0): rw=randwrite, bs=1M-1M/1M-1M/1M-1M, ioengine=sync, iodepth=1
fio-2.0.14
Starting 4 processes
file1: Laying out IO file(s) (1 file(s) / 2048MB)
Jobs: 4 (f=4): [wwww] [100.0% done] [0K/12300K/0K /s] [0 /12 /0  iops] [eta 00m:00s]
file1: (groupid=0, jobs=4): err= 0: pid=28098: Thu May  2 01:34:25 2013
  write: io=113664KB, bw=11144KB/s, iops=10 , runt= 10200msec
    clat (msec): min=15 , max=3058 , avg=92.17, stdev=296.16
     lat (msec): min=15 , max=3059 , avg=92.29, stdev=296.16
    clat percentiles (msec):
     |  1.00th=[   16],  5.00th=[   18], 10.00th=[   21], 20.00th=[   26],
     | 30.00th=[   31], 40.00th=[   37], 50.00th=[   42], 60.00th=[   49],
     | 70.00th=[   57], 80.00th=[   67], 90.00th=[  147], 95.00th=[  229],
     | 99.00th=[  693], 99.50th=[ 3064], 99.90th=[ 3064], 99.95th=[ 3064],
     | 99.99th=[ 3064]
    bw (KB/s)  : min=  100, max=28332, per=100.00%, avg=12722.67, stdev=10798.05
    lat (msec) : 20=9.91%, 50=52.25%, 100=23.42%, 250=9.91%, 500=2.70%
    lat (msec) : 750=0.90%, >=2000=0.90%
  cpu          : usr=0.03%, sys=0.28%, ctx=400, majf=0, minf=89
  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=0/w=111/d=0, short=r=0/w=0/d=0

Run status group 0 (all jobs):
  WRITE: io=113664KB, aggrb=11143KB/s, minb=11143KB/s, maxb=11143KB/s, mint=10200msec, maxt=10200msec

Disk stats (read/write):
    dm-0: ios=84/7020, merge=0/0, ticks=2867/39132777, in_queue=11460018, util=100.00%, aggrios=86/893, aggrmerge=0/6207, aggrticks=3117/403263, aggrin_queue=188776, aggrutil=100.00%
  sda: ios=86/893, merge=0/6207, ticks=3117/403263, in_queue=188776, util=100.00%