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btrfs 50:50 randrw raid10 fio config
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=28 (file:io_u.c:1548, func=io_u error, error=No space left on device): pid=59888: Wed Jun 18 07:07:19 2014
Description : ["random 50/50"]
read : io=53652MB, bw=122837KB/s, iops=30709, runt=447255msec
slat (usec): min=81, max=7570.9K, avg=320.40, stdev=15636.39
clat (usec): min=0, max=7571.5K, avg=1600.62, stdev=14236.27
lat (usec): min=157, max=7685.9K, avg=1922.45, stdev=21299.86
clat percentiles (usec):
| 1.00th=[ 137], 5.00th=[ 231], 10.00th=[ 326], 20.00th=[ 510],
| 30.00th=[ 676], 40.00th=[ 852], 50.00th=[ 1080], 60.00th=[ 1448],
| 70.00th=[ 2024], 80.00th=[ 2544], 90.00th=[ 3024], 95.00th=[ 3504],
| 99.00th=[ 5984], 99.50th=[ 8640], 99.90th=[24448], 99.95th=[29568],
| 99.99th=[60160]
bw (KB /s): min= 2, max=41560, per=26.38%, avg=32407.28, stdev=7453.58
write: io=53641MB, bw=122811KB/s, iops=30702, runt=447255msec
slat (usec): min=81, max=7570.9K, avg=336.80, stdev=17445.38
clat (usec): min=0, max=7571.8K, avg=1885.29, stdev=18995.91
lat (usec): min=162, max=7571.1K, avg=2203.29, stdev=22701.82
clat percentiles (usec):
| 1.00th=[ 124], 5.00th=[ 266], 10.00th=[ 414], 20.00th=[ 636],
| 30.00th=[ 836], 40.00th=[ 1080], 50.00th=[ 1432], 60.00th=[ 1944],
| 70.00th=[ 2416], 80.00th=[ 2768], 90.00th=[ 3216], 95.00th=[ 3664],
| 99.00th=[ 6368], 99.50th=[10176], 99.90th=[27008], 99.95th=[31616],
| 99.99th=[76288]
bw (KB /s): min= 7, max=40872, per=26.38%, avg=32401.63, stdev=7449.89
lat (usec) : 2=0.01%, 4=0.17%, 10=0.03%, 20=0.02%, 50=0.06%
lat (usec) : 100=0.30%, 250=4.65%, 500=11.17%, 750=13.82%, 1000=11.93%
lat (msec) : 2=23.14%, 4=31.45%, 10=2.80%, 20=0.28%, 50=0.16%
lat (msec) : 100=0.01%, 250=0.01%, 500=0.01%, 2000=0.01%, >=2000=0.01%
cpu : usr=1.35%, sys=25.22%, ctx=12639061, majf=3, minf=138520
IO depths : 1=0.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.1%, 32=101.3%, >=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=13734847/w=13732001/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=53652MB, aggrb=122837KB/s, minb=122837KB/s, maxb=122837KB/s, mint=447255msec, maxt=447255msec
WRITE: io=53641MB, aggrb=122811KB/s, minb=122811KB/s, maxb=122811KB/s, mint=447255msec, maxt=447255msec
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