TPerry
Well-known member
Just for @Floren
Random write:
Sequential write
Random write:
Code:
root@orion:/home/tracy/work# fio test.cfg
random-write-direct: (g=0): rw=randwrite, bs=8K-8K/8K-8K, ioengine=sync, iodepth=1
...
random-write-direct: (g=0): rw=randwrite, bs=8K-8K/8K-8K, ioengine=sync, iodepth=1
2.0.8
Starting 5 processes
random-write-direct: Laying out IO file(s) (1 file(s) / 512MB)
random-write-direct: Laying out IO file(s) (1 file(s) / 512MB)
random-write-direct: Laying out IO file(s) (1 file(s) / 512MB)
random-write-direct: Laying out IO file(s) (1 file(s) / 512MB)
random-write-direct: Laying out IO file(s) (1 file(s) / 512MB)
Jobs: 5 (f=5): [wwwww] [100.0% done] [0K/8016K /s] [0 /1002 iops] [eta 00m:00s]
random-write-direct: (groupid=0, jobs=5): err= 0: pid=30616
write: io=65120KB, bw=6500.4KB/s, iops=812 , runt= 10018msec
clat (usec): min=35 , max=526503 , avg=6145.87, stdev=17033.60
lat (usec): min=35 , max=526504 , avg=6146.13, stdev=17033.59
clat percentiles (usec):
| 1.00th=[ 52], 5.00th=[ 358], 10.00th=[ 892], 20.00th=[ 1656],
| 30.00th=[ 2128], 40.00th=[ 2704], 50.00th=[ 3312], 60.00th=[ 3792],
| 70.00th=[ 4576], 80.00th=[ 5856], 90.00th=[ 9920], 95.00th=[13376],
| 99.00th=[92672], 99.50th=[132096], 99.90th=[193536], 99.95th=[240640],
| 99.99th=[528384]
bw (KB/s) : min= 126, max= 2475, per=20.12%, avg=1307.54, stdev=597.69
lat (usec) : 50=0.81%, 100=1.63%, 250=1.51%, 500=2.54%, 750=2.31%
lat (usec) : 1000=2.32%
lat (msec) : 2=16.31%, 4=35.75%, 10=26.93%, 20=7.43%, 50=0.63%
lat (msec) : 100=0.95%, 250=0.84%, 500=0.02%, 750=0.01%
cpu : usr=0.04%, sys=0.08%, ctx=8160, majf=0, minf=119
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=8140/d=0, short=r=0/w=0/d=0
Run status group 0 (all jobs):
WRITE: io=65120KB, aggrb=6500KB/s, minb=6500KB/s, maxb=6500KB/s, mint=10018msec, maxt=10018msec
Disk stats (read/write):
dm-0: ios=0/8668, merge=0/0, ticks=0/148794, in_queue=148919, util=99.05%, aggrios=0/8853, aggrmerge=0/23, aggrticks=0/149183, aggrin_queue=149183, aggrutil=98.94%
sda: ios=0/8853, merge=0/23, ticks=0/149183, in_queue=149183, util=98.94%
Sequential write
Code:
sequential-write-buffered: (g=0): rw=write, bs=8K-8K/8K-8K, ioengine=sync, iodepth=1
...
sequential-write-buffered: (g=0): rw=write, bs=8K-8K/8K-8K, ioengine=sync, iodepth=1
2.0.8
Starting 5 processes
sequential-write-buffered: Laying out IO file(s) (1 file(s) / 512MB)
sequential-write-buffered: Laying out IO file(s) (1 file(s) / 512MB)
sequential-write-buffered: Laying out IO file(s) (1 file(s) / 512MB)
sequential-write-buffered: Laying out IO file(s) (1 file(s) / 512MB)
sequential-write-buffered: Laying out IO file(s) (1 file(s) / 512MB)
sequential-write-buffered: (groupid=0, jobs=5): err= 0: pid=30681
write: io=2560.0MB, bw=7314.3MB/s, iops=936228 , runt= 350msec
clat (usec): min=2 , max=682 , avg= 4.33, stdev= 1.86
lat (usec): min=2 , max=683 , avg= 4.43, stdev= 1.88
clat percentiles (usec):
| 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 3],
| 30.00th=[ 4], 40.00th=[ 4], 50.00th=[ 4], 60.00th=[ 4],
| 70.00th=[ 5], 80.00th=[ 5], 90.00th=[ 6], 95.00th=[ 6],
| 99.00th=[ 8], 99.50th=[ 9], 99.90th=[ 10], 99.95th=[ 11],
| 99.99th=[ 22]
lat (usec) : 4=27.47%, 10=72.28%, 20=0.24%, 50=0.01%, 100=0.01%
lat (usec) : 250=0.01%, 500=0.01%, 750=0.01%
cpu : usr=11.06%, sys=88.03%, ctx=48, majf=0, minf=132
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=327680/d=0, short=r=0/w=0/d=0
Run status group 0 (all jobs):
WRITE: io=2560.0MB, aggrb=7314.3MB/s, minb=7314.3MB/s, maxb=7314.3MB/s, mint=350msec, maxt=350msec
Disk stats (read/write):
dm-0: ios=0/0, merge=0/0, ticks=0/0, in_queue=0, util=0.00%, aggrios=0/0, aggrmerge=0/0, aggrticks=0/0, aggrin_queue=0, aggrutil=0.00%
sda: ios=0/0, merge=0/0, ticks=0/0, in_queue=0, util=0.00%