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mdraid0 ext4
rw5050: (g=0): rw=randrw, bs=4K-4K/4K-4K/4K-4K, ioengine=libaio, iodepth=32
...
fio-2.1.9
Starting 4 processes
rw5050: Laying out IO file(s) (1 file(s) / 25600MB)
rw5050: Laying out IO file(s) (1 file(s) / 25600MB)
rw5050: Laying out IO file(s) (1 file(s) / 25600MB)
rw5050: Laying out IO file(s) (1 file(s) / 25600MB)
rw5050: (groupid=0, jobs=4): err= 0: pid=58173: Wed Jun 18 03:24:24 2014
Description : ["random 50/50"]
read : io=107800MB, bw=183979KB/s, iops=45994, runt=600002msec
slat (usec): min=28, max=3668, avg=68.93, stdev=100.47
clat (usec): min=0, max=618100, avg=1369.50, stdev=1863.19
lat (usec): min=85, max=618171, avg=1438.57, stdev=1867.04
clat percentiles (usec):
| 1.00th=[ 137], 5.00th=[ 191], 10.00th=[ 253], 20.00th=[ 378],
| 30.00th=[ 510], 40.00th=[ 676], 50.00th=[ 892], 60.00th=[ 1192],
| 70.00th=[ 1624], 80.00th=[ 2224], 90.00th=[ 3024], 95.00th=[ 3760],
| 99.00th=[ 5728], 99.50th=[ 8160], 99.90th=[17024], 99.95th=[20096],
| 99.99th=[25216]
bw (KB /s): min= 4, max=57405, per=25.01%, avg=46013.26, stdev=4355.82
write: io=107771MB, bw=183929KB/s, iops=45982, runt=600002msec
slat (usec): min=30, max=3668, avg=69.71, stdev=101.40
clat (usec): min=0, max=609351, avg=1257.34, stdev=1933.94
lat (usec): min=59, max=609429, avg=1327.19, stdev=1937.50
clat percentiles (usec):
| 1.00th=[ 87], 5.00th=[ 153], 10.00th=[ 199], 20.00th=[ 306],
| 30.00th=[ 434], 40.00th=[ 588], 50.00th=[ 788], 60.00th=[ 1064],
| 70.00th=[ 1448], 80.00th=[ 2040], 90.00th=[ 2864], 95.00th=[ 3632],
| 99.00th=[ 5536], 99.50th=[ 8032], 99.90th=[16768], 99.95th=[20096],
| 99.99th=[25216]
bw (KB /s): min= 4, max=56848, per=25.01%, avg=46001.19, stdev=4348.63
lat (usec) : 2=0.03%, 4=0.04%, 10=0.01%, 20=0.01%, 50=0.08%
lat (usec) : 100=0.60%, 250=11.72%, 500=19.59%, 750=14.02%, 1000=9.97%
lat (msec) : 2=21.94%, 4=18.24%, 10=3.42%, 20=0.29%, 50=0.05%
lat (msec) : 100=0.01%, 750=0.01%
cpu : usr=1.70%, sys=12.58%, ctx=39335582, majf=0, minf=46435
IO depths : 1=0.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.1%, 32=100.8%, >=64=0.0%
submit : 0=0.0%, 4=0.0%, 8=0.0%, 16=100.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=0.0%, 8=0.0%, 16=100.0%, 32=0.0%, 64=0.0%, >=64=0.0%
issued : total=r=27596824/w=27589400/d=0, short=r=0/w=0/d=0
latency : target=0, window=0, percentile=100.00%, depth=32
Run status group 0 (all jobs):
READ: io=107800MB, aggrb=183978KB/s, minb=183978KB/s, maxb=183978KB/s, mint=600002msec, maxt=600002msec
WRITE: io=107771MB, aggrb=183929KB/s, minb=183929KB/s, maxb=183929KB/s, mint=600002msec, maxt=600002msec
Disk stats (read/write):
md0: ios=27826601/27838459, merge=0/0, ticks=0/0, in_queue=0, util=0.00%, aggrios=6956638/6958868, aggrmerge=12/875, aggrticks=7009298/6196179, aggrin_queue=13204809, aggrutil=88.03%
sdi: ios=6957984/6962437, merge=15/3251, ticks=7572753/7245673, in_queue=14818116, util=87.87%
sdj: ios=6951268/6959715, merge=13/84, ticks=7488010/7174617, in_queue=14661756, util=88.03%
sdk: ios=6962899/6954641, merge=15/85, ticks=7276394/6947826, in_queue=14222934, util=87.54%
sdl: ios=6954402/6958681, merge=5/82, ticks=5700037/3416603, in_queue=9116430, util=82.59%
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