2013-01-21

fio results for 2 flash cards (640GB) in raid 0


read_32k_12000MB: (g=0): rw=randread, bs=32K-32K/32K-32K, ioengine=libaio, iodepth=64
fio-2.0.9
Starting 1 process
Jobs: 1 (f=1): [r] [100.0% done] [693.6M/0K /s] [22.2K/0  iops] [eta 00m:00s]
read_32k_12000MB: (groupid=0, jobs=1): err= 0: pid=28201: Mon Jan 21 14:39:20 2013
  read : io=12000MB, bw=684454KB/s, iops=21389 , runt= 17953msec
    slat (usec): min=7 , max=673 , avg=39.93, stdev=15.79
    clat (usec): min=197 , max=5160 , avg=2947.73, stdev=373.72
     lat (usec): min=208 , max=5258 , avg=2988.50, stdev=377.75
    clat percentiles (usec):
     |  1.00th=[ 1064],  5.00th=[ 2768], 10.00th=[ 2864], 20.00th=[ 2928],
     | 30.00th=[ 2928], 40.00th=[ 2960], 50.00th=[ 2992], 60.00th=[ 3024],
     | 70.00th=[ 3056], 80.00th=[ 3088], 90.00th=[ 3152], 95.00th=[ 3248],
     | 99.00th=[ 3536], 99.50th=[ 3632], 99.90th=[ 4016], 99.95th=[ 4256],
     | 99.99th=[ 4704]
    bw (KB/s)  : min=654656, max=794496, per=99.68%, avg=682293.03, stdev=31237.51
    lat (usec) : 250=0.01%, 500=0.06%, 750=0.19%, 1000=0.53%
    lat (msec) : 2=3.17%, 4=95.94%, 10=0.11%
  cpu          : usr=12.80%, sys=82.37%, ctx=284818, majf=0, minf=535
  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    : total=r=384000/w=0/d=0, short=r=0/w=0/d=0

Run status group 0 (all jobs):
   READ: io=12000MB, aggrb=684453KB/s, minb=684453KB/s, maxb=684453KB/s, mint=17953msec, maxt=17953msec

Disk stats (read/write):
    md0: ios=383583/14, merge=0/0, ticks=0/0, in_queue=0, util=0.00%, aggrios=192000/5, aggrmerge=0/2, aggrticks=47430/0, aggrin_queue=47299, aggrutil=93.45%
  fioa: ios=192000/9, merge=0/4, ticks=47848/0, in_queue=47710, util=93.45%
  fiob: ios=192000/1, merge=0/0, ticks=47013/0, in_queue=46888, util=93.12%

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