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btrfs 50:50 randrw "single" 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= 0: pid=59524: Wed Jun 18 06:17:26 2014
Description : ["random 50/50"]
read : io=60060MB, bw=102502KB/s, iops=25625, runt=600003msec
slat (usec): min=103, max=8276.3K, avg=322.79, stdev=19587.74
clat (usec): min=0, max=8286.1K, avg=1830.87, stdev=19068.40
lat (usec): min=153, max=8287.9K, avg=2154.85, stdev=28026.30
clat percentiles (usec):
| 1.00th=[ 94], 5.00th=[ 163], 10.00th=[ 229], 20.00th=[ 390],
| 30.00th=[ 564], 40.00th=[ 756], 50.00th=[ 1064], 60.00th=[ 1752],
| 70.00th=[ 2320], 80.00th=[ 2704], 90.00th=[ 3344], 95.00th=[ 4960],
| 99.00th=[ 8768], 99.50th=[13248], 99.90th=[30080], 99.95th=[39168],
| 99.99th=[104960]
bw (KB /s): min= 2, max=34744, per=26.56%, avg=27221.30, stdev=5500.38
write: io=60017MB, bw=102428KB/s, iops=25606, runt=600003msec
slat (usec): min=104, max=8276.3K, avg=344.41, stdev=22214.65
clat (usec): min=0, max=8277.6K, avg=2475.76, stdev=23389.15
lat (usec): min=154, max=8285.6K, avg=2821.55, stdev=33060.73
clat percentiles (usec):
| 1.00th=[ 127], 5.00th=[ 418], 10.00th=[ 596], 20.00th=[ 876],
| 30.00th=[ 1144], 40.00th=[ 1480], 50.00th=[ 1992], 60.00th=[ 2608],
| 70.00th=[ 2960], 80.00th=[ 3312], 90.00th=[ 4128], 95.00th=[ 5536],
| 99.00th=[ 8768], 99.50th=[12608], 99.90th=[27264], 99.95th=[37120],
| 99.99th=[103936]
bw (KB /s): min= 0, max=34762, per=26.56%, avg=27207.08, stdev=5462.25
lat (usec) : 2=0.01%, 4=0.28%, 10=0.05%, 20=0.03%, 50=0.13%
lat (usec) : 100=0.43%, 250=5.97%, 500=9.84%, 750=10.74%, 1000=8.85%
lat (msec) : 2=20.36%, 4=34.46%, 10=8.09%, 20=0.54%, 50=0.19%
lat (msec) : 100=0.03%, 250=0.01%, 500=0.01%, 750=0.01%, 1000=0.01%
lat (msec) : 2000=0.01%, >=2000=0.01%
cpu : usr=1.15%, sys=20.69%, ctx=14264932, majf=4, minf=194060
IO depths : 1=0.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.1%, 32=101.0%, >=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=15375369/w=15364167/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=60060MB, aggrb=102502KB/s, minb=102502KB/s, maxb=102502KB/s, mint=600003msec, maxt=600003msec
WRITE: io=60017MB, aggrb=102427KB/s, minb=102427KB/s, maxb=102427KB/s, mint=600003msec, maxt=600003msec
sudo mkfs.btrfs --data single --metadata raid10 --force /dev/sd[ijkl]1
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