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Summary
=======
 
kvm tools QCOW2 read and write performance is better by 2 - 4 times to Qemu
 
Host
====
 
prasad@prasad-desktop:~/linux-kvm/tools/kvm$ qemu-system-x86_64 --version
QEMU emulator version 0.14.50 (qemu-kvm-devel), Copyright (c)
2003-2008 Fabrice Bellard
 
prasad@prasad-desktop:~/linux-kvm/tools/kvm$ uname -a
Linux prasad-desktop 2.6.38-10-generic #44-Ubuntu SMP Thu Jun 2
21:32:22 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
 
prasad@prasad-desktop:~/linux-kvm/tools/kvm$ grep -c vmx /proc/cpuinfo
2
 
prasad@prasad-desktop:~/linux-kvm/tools/kvm$ free -m
total used free shared buffers cached
Mem: 2007 1733 273 0 295 645
-/+ buffers/cache: 792 1214
Swap: 2047 139 1908
 
 
QEMU
======
 
prasad@prasad-vm:~$ sudo bash
[sudo] password for prasad:
root@prasad-vm:~# mkfs -t ext2 /dev/sdb
mke2fs 1.41.14 (22-Dec-2010)
/dev/sdb is entire device, not just one partition!
Proceed anyway? (y,n) y
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
98304 inodes, 393216 blocks
19660 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=402653184
12 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912
 
Writing inode tables: done
Writing superblocks and filesystem accounting information: done
 
This filesystem will be automatically checked every 37 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
root@prasad-vm:~# mount /dev/sdb /mnt
root@prasad-vm:~# fio fio-mixed.job
Multiple writers may overwrite blocks that belong to other jobs. This
can cause verification failures.
fio-sync: (g=0): rw=randrw, bs=16K-256K/16K-256K, ioengine=sync, iodepth=1
...
fio-sync: (g=0): rw=randrw, bs=16K-256K/16K-256K, ioengine=sync, iodepth=1
Multiple writers may overwrite blocks that belong to other jobs. This
can cause verification failures.
fio-sync: (g=1): rw=randrw, bs=16K-256K/16K-256K, ioengine=libaio, iodepth=4
...
fio-sync: (g=1): rw=randrw, bs=16K-256K/16K-256K, ioengine=libaio, iodepth=4
Multiple writers may overwrite blocks that belong to other jobs. This
can cause verification failures.
fio-sync: (g=2): rw=randrw, bs=16K-256K/16K-256K, ioengine=mmap, iodepth=1
...
fio-sync: (g=2): rw=randrw, bs=16K-256K/16K-256K, ioengine=mmap, iodepth=1
Multiple writers may overwrite blocks that belong to other jobs. This
can cause verification failures.
fio-sync: (g=3): rw=randrw, bs=16K-256K/16K-256K, ioengine=splice, iodepth=1
...
fio-sync: (g=3): rw=randrw, bs=16K-256K/16K-256K, ioengine=splice, iodepth=1
fio 1.55
Starting 16 processes
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
Jobs: 3 (f=3): [____________VV_V] [88.3% done] [31465K/1974K /s] [505
/64 iops] [eta 00m:09s]
fio-sync: (groupid=0, jobs=1): err= 0: pid=1533
read : io=51200KB, bw=15288KB/s, iops=217 , runt= 3349msec
clat (usec): min=516 , max=98518 , avg=3683.05, stdev=7294.08
lat (usec): min=551 , max=1192.2K, avg=306720.48, stdev=445947.55
bw (KB/s) : min= 1850, max=29709, per=22.14%, avg=13539.17, stdev=9621.63
write: io=16304KB, bw=6671.4KB/s, iops=99 , runt= 2444msec
clat (usec): min=22 , max=15135 , avg=306.33, stdev=1026.55
lat (usec): min=22 , max=15135 , avg=307.54, stdev=1026.73
bw (KB/s) : min= 4462, max=13380, per=27.79%, avg=7793.50, stdev=4181.83
cpu : usr=3.29%, sys=17.62%, ctx=879, majf=0, minf=98
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 r/w/d: total=729/244/0, short=0/0/0
lat (usec): 50=1.54%, 100=6.17%, 250=10.07%, 500=5.14%, 750=23.43%
lat (usec): 1000=6.47%
lat (msec): 2=10.89%, 4=17.88%, 10=14.08%, 20=2.36%, 50=1.44%
lat (msec): 100=0.51%
fio-sync: (groupid=0, jobs=1): err= 0: pid=1534
read : io=51200KB, bw=17427KB/s, iops=230 , runt= 2938msec
clat (usec): min=514 , max=48224 , avg=3155.31, stdev=4704.60
lat (usec): min=532 , max=855015 , avg=222913.59, stdev=311813.71
bw (KB/s) : min= 2358, max=26794, per=22.44%, avg=13722.40, stdev=9886.82
write: io=17216KB, bw=7511.4KB/s, iops=102 , runt= 2292msec
clat (usec): min=22 , max=24424 , avg=627.28, stdev=2675.91
lat (usec): min=23 , max=24425 , avg=628.13, stdev=2675.95
bw (KB/s) : min= 4279, max=15235, per=29.83%, avg=8365.50, stdev=4754.69
cpu : usr=5.11%, sys=19.07%, ctx=807, majf=0, minf=100
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 r/w/d: total=676/236/0, short=0/0/0
lat (usec): 50=2.41%, 100=6.14%, 250=9.54%, 500=4.71%, 750=22.59%
lat (usec): 1000=6.80%
lat (msec): 2=12.06%, 4=17.76%, 10=14.80%, 20=1.64%, 50=1.54%
fio-sync: (groupid=0, jobs=1): err= 0: pid=1535
read : io=51200KB, bw=16280KB/s, iops=213 , runt= 3145msec
clat (usec): min=513 , max=78530 , avg=3750.60, stdev=6615.27
lat (usec): min=537 , max=996059 , avg=223649.09, stdev=335356.40
bw (KB/s) : min= 2933, max=25841, per=24.68%, avg=15089.50, stdev=8938.34
write: io=18272KB, bw=7674.9KB/s, iops=95 , runt= 2381msec
clat (usec): min=20 , max=11247 , avg=388.58, stdev=1097.82
lat (usec): min=20 , max=11247 , avg=389.37, stdev=1097.78
bw (KB/s) : min= 4854, max=12310, per=31.05%, avg=8708.50, stdev=3999.30
cpu : usr=3.82%, sys=18.45%, ctx=787, majf=0, minf=99
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 r/w/d: total=673/227/0, short=0/0/0
lat (usec): 50=1.67%, 100=5.89%, 250=9.33%, 500=5.00%, 750=22.00%
lat (usec): 1000=7.11%
lat (msec): 2=11.44%, 4=17.67%, 10=14.89%, 20=3.67%, 50=0.89%
lat (msec): 100=0.44%
fio-sync: (groupid=0, jobs=1): err= 0: pid=1536
read : io=51200KB, bw=15440KB/s, iops=216 , runt= 3316msec
clat (usec): min=508 , max=130503 , avg=3637.55, stdev=7619.12
lat (usec): min=541 , max=1189.2K, avg=264600.63, stdev=398648.42
bw (KB/s) : min= 1446, max=28359, per=24.08%, avg=14726.17, stdev=9639.49
write: io=16752KB, bw=6930.1KB/s, iops=98 , runt= 2417msec
clat (usec): min=21 , max=34821 , avg=583.03, stdev=3157.64
lat (usec): min=21 , max=34845 , avg=583.87, stdev=3158.76
bw (KB/s) : min= 4640, max=14470, per=28.68%, avg=8043.00, stdev=4488.17
cpu : usr=5.43%, sys=15.38%, ctx=810, majf=0, minf=100
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 r/w/d: total=719/239/0, short=0/0/0
lat (usec): 50=2.40%, 100=6.16%, 250=8.98%, 500=3.97%, 750=23.59%
lat (usec): 1000=5.43%
lat (msec): 2=11.48%, 4=19.83%, 10=13.57%, 20=3.13%, 50=0.94%
lat (msec): 100=0.42%, 250=0.10%
fio-sync: (groupid=1, jobs=1): err= 0: pid=1538
read : io=51200KB, bw=15445KB/s, iops=212 , runt= 3315msec
slat (usec): min=520 , max=562880 , avg=148370.81, stdev=216023.90
clat (usec): min=98 , max=128684 , avg=9194.65, stdev=11953.40
lat (msec): min=1 , max=563 , avg=157.58, stdev=213.01
bw (KB/s) : min= 4431, max=20210, per=20.01%, avg=12362.50, stdev=6422.60
write: io=17424KB, bw=6324.6KB/s, iops=86 , runt= 2755msec
slat (usec): min=24 , max=123464 , avg=1259.38, stdev=8595.92
clat (usec): min=76 , max=126437 , avg=12860.20, stdev=11963.17
lat (usec): min=119 , max=128219 , avg=14121.22, stdev=14446.22
bw (KB/s) : min= 2909, max=10511, per=27.34%, avg=6606.00, stdev=3023.98
cpu : usr=4.83%, sys=14.48%, ctx=592, majf=0, minf=285
IO depths : 1=0.2%, 2=0.4%, 4=99.4%, 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 r/w/d: total=706/238/0, short=0/0/0
lat (usec): 100=0.21%, 250=0.21%, 500=2.97%, 750=4.34%, 1000=2.44%
lat (msec): 2=9.43%, 4=11.97%, 10=33.26%, 20=22.88%, 50=10.81%
lat (msec): 100=1.17%, 250=0.32%
fio-sync: (groupid=1, jobs=1): err= 0: pid=1539
read : io=51200KB, bw=15749KB/s, iops=220 , runt= 3251msec
slat (usec): min=566 , max=741020 , avg=181085.95, stdev=279400.92
clat (usec): min=56 , max=97799 , avg=9337.30, stdev=11596.99
lat (msec): min=1 , max=741 , avg=190.43, stdev=277.57
bw (KB/s) : min= 0, max=24000, per=17.96%, avg=11095.86, stdev=8327.28
write: io=16192KB, bw=6445.9KB/s, iops=90 , runt= 2512msec
slat (usec): min=21 , max=20099 , avg=610.01, stdev=2242.40
clat (usec): min=467 , max=73394 , avg=12598.63, stdev=11259.96
lat (usec): min=555 , max=73586 , avg=13210.14, stdev=11478.28
bw (KB/s) : min= 3057, max=10801, per=30.43%, avg=7352.75, stdev=3949.45
cpu : usr=5.23%, sys=14.46%, ctx=614, majf=0, minf=287
IO depths : 1=0.2%, 2=0.4%, 4=99.4%, 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 r/w/d: total=717/228/0, short=0/0/0
lat (usec): 100=0.11%, 250=0.11%, 500=1.69%, 750=2.43%, 1000=2.43%
lat (msec): 2=8.89%, 4=15.56%, 10=37.57%, 20=18.52%, 50=11.11%
lat (msec): 100=1.59%
fio-sync: (groupid=1, jobs=1): err= 0: pid=1540
read : io=51200KB, bw=15906KB/s, iops=219 , runt= 3219msec
slat (usec): min=518 , max=650291 , avg=144469.39, stdev=229838.50
clat (usec): min=63 , max=102164 , avg=9226.34, stdev=10528.11
lat (usec): min=599 , max=651332 , avg=153706.10, stdev=228141.71
bw (KB/s) : min= 5141, max=25873, per=22.01%, avg=13598.50, stdev=7702.56
write: io=15568KB, bw=6059.1KB/s, iops=86 , runt= 2569msec
slat (usec): min=21 , max=31461 , avg=615.01, stdev=3082.31
clat (usec): min=604 , max=111127 , avg=13102.66, stdev=14347.79
lat (usec): min=628 , max=115826 , avg=13719.01, stdev=15971.20
bw (KB/s) : min= 2015, max=10210, per=24.85%, avg=6005.80, stdev=3692.10
cpu : usr=2.80%, sys=16.46%, ctx=582, majf=0, minf=287
IO depths : 1=0.2%, 2=0.4%, 4=99.4%, 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 r/w/d: total=707/222/0, short=0/0/0
lat (usec): 100=0.11%, 250=0.11%, 500=1.94%, 750=2.80%, 1000=3.23%
lat (msec): 2=10.76%, 4=11.09%, 10=35.95%, 20=22.60%, 50=9.90%
lat (msec): 100=1.18%, 250=0.32%
fio-sync: (groupid=1, jobs=1): err= 0: pid=1541
read : io=51200KB, bw=16787KB/s, iops=239 , runt= 3050msec
slat (usec): min=520 , max=564953 , avg=151862.45, stdev=209584.65
clat (usec): min=51 , max=106416 , avg=8030.78, stdev=11145.98
lat (usec): min=637 , max=565502 , avg=159898.88, stdev=206990.87
bw (KB/s) : min= 154, max=27852, per=20.17%, avg=12461.20, stdev=10656.27
write: io=17392KB, bw=6998.9KB/s, iops=102 , runt= 2485msec
slat (usec): min=25 , max=30760 , avg=614.30, stdev=2649.49
clat (usec): min=644 , max=53437 , avg=10801.46, stdev=8187.56
lat (usec): min=819 , max=53542 , avg=11417.07, stdev=8626.61
bw (KB/s) : min= 4861, max=11659, per=33.24%, avg=8031.75, stdev=3340.68
cpu : usr=3.94%, sys=16.07%, ctx=580, majf=0, minf=287
IO depths : 1=0.2%, 2=0.4%, 4=99.4%, 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 r/w/d: total=729/254/0, short=0/0/0
lat (usec): 100=0.20%, 500=2.95%, 750=5.60%, 1000=4.98%
lat (msec): 2=11.90%, 4=11.60%, 10=35.50%, 20=17.90%, 50=8.24%
lat (msec): 100=1.02%, 250=0.10%
fio-sync: (groupid=2, jobs=1): err= 0: pid=1542
read : io=51200KB, bw=1690.1KB/s, iops=24 , runt= 30279msec
clat (usec): min=10 , max=644291 , avg=22244.13, stdev=44803.25
lat (msec): min=1 , max=644 , avg=121.64, stdev=167.59
bw (KB/s) : min= 146, max= 6512, per=19.58%, avg=1316.30, stdev=934.42
write: io=16656KB, bw=573321 B/s, iops=8 , runt= 29749msec
clat (msec): min=2 , max=384 , avg=52.21, stdev=57.36
lat (msec): min=2 , max=384 , avg=52.21, stdev=57.36
bw (KB/s) : min= 117, max= 1192, per=26.45%, avg=570.35, stdev=273.92
cpu : usr=0.89%, sys=21.43%, ctx=10707, majf=12800, minf=2749
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 r/w/d: total=749/251/0, short=0/0/0
lat (usec): 20=2.30%, 50=6.90%, 100=4.50%, 250=4.30%, 500=3.20%
lat (usec): 750=1.70%, 1000=0.80%
lat (msec): 2=0.70%, 4=9.80%, 10=15.70%, 20=15.10%, 50=15.50%
lat (msec): 100=10.40%, 250=8.80%, 500=0.20%, 750=0.10%
fio-sync: (groupid=2, jobs=1): err= 0: pid=1543
read : io=51200KB, bw=1696.7KB/s, iops=23 , runt= 30178msec
clat (usec): min=11 , max=745930 , avg=26331.78, stdev=54798.04
lat (msec): min=1 , max=745 , avg=108.28, stdev=144.15
bw (KB/s) : min= 276, max= 3237, per=17.99%, avg=1209.06, stdev=532.94
write: io=16176KB, bw=558056 B/s, iops=7 , runt= 29682msec
clat (msec): min=2 , max=259 , avg=50.30, stdev=51.71
lat (msec): min=2 , max=259 , avg=50.30, stdev=51.71
bw (KB/s) : min= 140, max= 1078, per=27.13%, avg=584.87, stdev=260.49
cpu : usr=1.16%, sys=21.11%, ctx=10921, majf=12800, minf=4144
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 r/w/d: total=698/224/0, short=0/0/0
lat (usec): 20=0.11%, 100=4.99%, 250=7.59%, 500=6.29%, 750=2.28%
lat (usec): 1000=1.74%
lat (msec): 2=0.65%, 4=8.35%, 10=16.38%, 20=16.81%, 50=13.67%
lat (msec): 100=10.95%, 250=9.54%, 500=0.54%, 750=0.11%
fio-sync: (groupid=2, jobs=1): err= 0: pid=1544
read : io=51200KB, bw=1683.5KB/s, iops=22 , runt= 30414msec
clat (usec): min=10 , max=275487 , avg=24429.58, stdev=43067.18
lat (msec): min=1 , max=327 , avg=82.80, stdev=96.05
bw (KB/s) : min= 248, max= 2365, per=17.35%, avg=1166.16, stdev=519.30
write: io=16272KB, bw=553443 B/s, iops=6 , runt= 30107msec
clat (msec): min=2 , max=705 , avg=63.36, stdev=79.34
lat (msec): min=2 , max=705 , avg=63.36, stdev=79.34
bw (KB/s) : min= 179, max= 1477, per=25.98%, avg=560.23, stdev=264.11
cpu : usr=1.05%, sys=21.34%, ctx=11041, majf=12800, minf=3896
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 r/w/d: total=687/209/0, short=0/0/0
lat (usec): 20=0.56%, 50=2.46%, 100=3.57%, 250=5.13%, 500=5.58%
lat (usec): 750=3.46%, 1000=1.56%
lat (msec): 2=0.22%, 4=9.49%, 10=15.07%, 20=15.18%, 50=17.63%
lat (msec): 100=9.60%, 250=9.71%, 500=0.67%, 750=0.11%
fio-sync: (groupid=2, jobs=1): err= 0: pid=1545
read : io=51200KB, bw=1680.6KB/s, iops=24 , runt= 30467msec
clat (usec): min=9 , max=669337 , avg=24066.68, stdev=48624.32
lat (msec): min=2 , max=669 , avg=50.27, stdev=54.57
bw (KB/s) : min= 143, max= 2241, per=17.40%, avg=1169.59, stdev=455.84
write: io=16320KB, bw=550777 B/s, iops=7 , runt= 30342msec
clat (msec): min=2 , max=410 , avg=53.15, stdev=66.28
lat (msec): min=2 , max=410 , avg=53.15, stdev=66.28
bw (KB/s) : min= 26, max= 1111, per=25.99%, avg=560.38, stdev=267.75
cpu : usr=0.82%, sys=21.27%, ctx=10887, majf=12800, minf=1737
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 r/w/d: total=733/236/0, short=0/0/0
lat (usec): 10=0.31%, 20=2.99%, 50=8.77%, 100=5.68%, 250=2.06%
lat (usec): 500=1.96%, 750=1.03%, 1000=0.93%
lat (msec): 2=0.31%, 4=8.67%, 10=17.23%, 20=15.79%, 50=14.76%
lat (msec): 100=9.49%, 250=9.18%, 500=0.72%, 750=0.10%
fio-sync: (groupid=3, jobs=1): err= 0: pid=1546
read : io=51200KB, bw=1754.6KB/s, iops=25 , runt= 29182msec
clat (usec): min=8 , max=2609.6K, avg=25569.71, stdev=114553.65
lat (usec): min=512 , max=2609.6K, avg=148540.99, stdev=206618.31
bw (KB/s) : min= 20, max=15906, per=26.59%, avg=1859.90, stdev=2682.04
write: io=15328KB, bw=548883 B/s, iops=8 , runt= 28596msec
clat (usec): min=27 , max=1044.5K, avg=41797.89, stdev=131426.18
lat (usec): min=27 , max=1044.5K, avg=41801.66, stdev=131425.30
bw (KB/s) : min= 19, max= 3095, per=25.31%, avg=602.86, stdev=656.00
cpu : usr=0.51%, sys=11.93%, ctx=1459, majf=0, minf=104
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 r/w/d: total=734/237/0, short=0/0/0
lat (usec): 10=0.21%, 20=1.96%, 50=5.25%, 100=3.81%, 250=3.81%
lat (usec): 500=1.34%, 750=17.10%, 1000=1.96%
lat (msec): 2=17.10%, 4=11.23%, 10=9.27%, 20=5.97%, 50=8.03%
lat (msec): 100=6.08%, 250=4.94%, 500=1.13%, 750=0.31%, 1000=0.31%
lat (msec): 2000=0.10%, >=2000=0.10%
fio-sync: (groupid=3, jobs=1): err= 0: pid=1547
read : io=51200KB, bw=1749.3KB/s, iops=23 , runt= 29270msec
clat (usec): min=8 , max=2610.3K, avg=30100.65, stdev=131492.67
lat (usec): min=498 , max=2610.3K, avg=156146.93, stdev=233072.58
bw (KB/s) : min= 140, max=11688, per=24.28%, avg=1698.24, stdev=2307.54
write: io=15808KB, bw=565498 B/s, iops=7 , runt= 28625msec
clat (usec): min=24 , max=1051.6K, avg=37476.08, stdev=129074.24
lat (usec): min=25 , max=1051.6K, avg=37476.93, stdev=129074.34
bw (KB/s) : min= 21, max= 2552, per=27.22%, avg=648.27, stdev=649.82
cpu : usr=0.92%, sys=10.59%, ctx=1165, majf=0, minf=100
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 r/w/d: total=684/222/0, short=0/0/0
lat (usec): 10=1.55%, 20=5.85%, 50=9.38%, 100=5.08%, 250=4.64%
lat (usec): 500=1.10%, 750=11.26%, 1000=2.43%
lat (msec): 2=11.81%, 4=9.27%, 10=9.27%, 20=5.74%, 50=8.94%
lat (msec): 100=6.29%, 250=5.41%, 500=0.88%, 750=0.33%, 1000=0.22%
lat (msec): 2000=0.44%, >=2000=0.11%
fio-sync: (groupid=3, jobs=1): err= 0: pid=1548
read : io=51200KB, bw=1791.9KB/s, iops=25 , runt= 28574msec
clat (usec): min=8 , max=2733.4K, avg=29899.81, stdev=141363.49
lat (usec): min=542 , max=2733.4K, avg=276579.28, stdev=422987.87
bw (KB/s) : min= 222, max=24140, per=27.57%, avg=1928.17, stdev=4017.20
write: io=19600KB, bw=740031 B/s, iops=9 , runt= 27121msec
clat (usec): min=26 , max=720968 , avg=24883.10, stdev=68888.19
lat (usec): min=27 , max=720969 , avg=24884.30, stdev=68888.12
bw (KB/s) : min= 81, max= 6980, per=38.80%, avg=924.26, stdev=1358.37
cpu : usr=0.59%, sys=12.04%, ctx=1309, majf=0, minf=104
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 r/w/d: total=717/261/0, short=0/0/0
lat (usec): 10=0.31%, 20=3.07%, 50=2.25%, 100=2.56%, 250=4.29%
lat (usec): 500=3.58%, 750=14.83%, 1000=2.15%
lat (msec): 2=14.21%, 4=9.30%, 10=10.94%, 20=8.18%, 50=11.45%
lat (msec): 100=6.75%, 250=4.50%, 500=1.12%, 750=0.10%, 1000=0.20%
lat (msec): 2000=0.10%, >=2000=0.10%
fio-sync: (groupid=3, jobs=1): err= 0: pid=1549
read : io=51200KB, bw=1748.8KB/s, iops=24 , runt= 29279msec
clat (usec): min=9 , max=2604.9K, avg=23955.07, stdev=114621.22
lat (usec): min=501 , max=2604.9K, avg=214875.90, stdev=341472.46
bw (KB/s) : min= 73, max=10986, per=28.89%, avg=2020.86, stdev=2585.88
write: io=17456KB, bw=632070 B/s, iops=8 , runt= 28280msec
clat (usec): min=24 , max=3042.6K, avg=46766.17, stdev=227703.02
lat (usec): min=25 , max=3042.6K, avg=47020.21, stdev=227710.76
bw (KB/s) : min= 33, max= 4292, per=32.65%, avg=777.69, stdev=938.17
cpu : usr=0.41%, sys=13.39%, ctx=1301, majf=0, minf=104
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 r/w/d: total=724/247/0, short=0/0/0
lat (usec): 10=0.72%, 20=6.18%, 50=5.56%, 100=2.78%, 250=5.25%
lat (usec): 500=1.75%, 750=11.84%, 1000=2.47%
lat (msec): 2=14.11%, 4=10.40%, 10=10.09%, 20=6.90%, 50=10.40%
lat (msec): 100=5.77%, 250=4.33%, 500=0.62%, 750=0.10%, 1000=0.31%
lat (msec): 2000=0.21%, >=2000=0.21%
 
Run status group 0 (all jobs):
READ: io=204800KB, aggrb=61152KB/s, minb=15655KB/s, maxb=17845KB/s,
mint=2938msec, maxt=3349msec
WRITE: io=68544KB, aggrb=28045KB/s, minb=6831KB/s, maxb=7858KB/s,
mint=2292msec, maxt=2444msec
 
Run status group 1 (all jobs):
READ: io=204800KB, aggrb=61779KB/s, minb=15815KB/s, maxb=17189KB/s,
mint=3050msec, maxt=3315msec
WRITE: io=66576KB, aggrb=24165KB/s, minb=6205KB/s, maxb=7166KB/s,
mint=2485msec, maxt=2755msec
 
Run status group 2 (all jobs):
READ: io=204800KB, aggrb=6722KB/s, minb=1720KB/s, maxb=1737KB/s,
mint=30178msec, maxt=30467msec
WRITE: io=65424KB, aggrb=2156KB/s, minb=550KB/s, maxb=573KB/s,
mint=29682msec, maxt=30342msec
 
Run status group 3 (all jobs):
READ: io=204800KB, aggrb=6994KB/s, minb=1790KB/s, maxb=1834KB/s,
mint=28574msec, maxt=29279msec
WRITE: io=68192KB, aggrb=2382KB/s, minb=548KB/s, maxb=740KB/s,
mint=27121msec, maxt=28625msec
 
Disk stats (read/write):
sdb: ios=60583/6652, merge=0/164, ticks=156340/672030,
in_queue=828230, util=82.71%
 
 
KVM TOOLS
===========
prasad@prasad-vm:~$ sudo bash
[sudo] password for prasad:
root@prasad-vm:~# mkfs -t ext2 /dev/vdb
mke2fs 1.41.14 (22-Dec-2010)
Warning: request type 8
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
98304 inodes, 393216 blocks
19660 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=402653184
12 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912
 
Writing inode tables: done
Writing superblocks and filesystem accounting information: done
 
This filesystem will be Warning: request type 8
automatically checked every 22 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
root@prasad-vm:~# mount /dev/vdb /mnt/
root@prasad-vm:~# fio fio-mixed.job
Multiple writers may overwrite blocks that belong to other jobs. This
can cause verification failures.
fio-sync: (g=0): rw=randrw, bs=16K-256K/16K-256K, ioengine=sync, iodepth=1
...
fio-sync: (g=0): rw=randrw, bs=16K-256K/16K-256K, ioengine=sync, iodepth=1
Multiple writers may overwrite blocks that belong to other jobs. This
can cause verification failures.
fio-sync: (g=1): rw=randrw, bs=16K-256K/16K-256K, ioengine=libaio, iodepth=4
...
fio-sync: (g=1): rw=randrw, bs=16K-256K/16K-256K, ioengine=libaio, iodepth=4
Multiple writers may overwrite blocks that belong to other jobs. This
can cause verification failures.
fio-sync: (g=2): rw=randrw, bs=16K-256K/16K-256K, ioengine=mmap, iodepth=1
...
fio-sync: (g=2): rw=randrw, bs=16K-256K/16K-256K, ioengine=mmap, iodepth=1
Multiple writers may overwrite blocks that belong to other jobs. This
can cause verification failures.
fio-sync: (g=3): rw=randrw, bs=16K-256K/16K-256K, ioengine=splice, iodepth=1
...
fio-sync: (g=3): rw=randrw, bs=16K-256K/16K-256K, ioengine=splice, iodepth=1
fio 1.55
Starting 16 processes
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
fio-sync: Laying out IO file(s) (1 file(s) / 50MB)
Jobs: 4 (f=4): [____________mmmm] [94.1% done] [71633K/37479K /s]
[1180 /601 iops] [eta 00m:01s]
fio-sync: (groupid=0, jobs=1): err= 0: pid=933
read : io=51200KB, bw=38266KB/s, iops=567 , runt= 1338msec
clat (usec): min=130 , max=70397 , avg=1290.15, stdev=4793.16
lat (usec): min=167 , max=481302 , avg=106978.55, stdev=168652.47
bw (KB/s) : min= 2784, max=43578, per=15.54%, avg=23181.00, stdev=28845.71
write: io=16448KB, bw=18460KB/s, iops=279 , runt= 891msec
clat (usec): min=21 , max=7054 , avg=503.03, stdev=940.65
lat (usec): min=22 , max=7055 , avg=507.19, stdev=956.65
bw (KB/s) : min=19732, max=19732, per=24.93%, avg=19732.00, stdev= 0.00
cpu : usr=7.48%, sys=27.67%, ctx=1116, majf=0, minf=98
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 r/w/d: total=759/249/0, short=0/0/0
lat (usec): 50=2.68%, 100=4.66%, 250=23.31%, 500=28.17%, 750=13.49%
lat (usec): 1000=6.85%
lat (msec): 2=13.10%, 4=4.37%, 10=2.28%, 20=0.40%, 50=0.40%
lat (msec): 100=0.30%
fio-sync: (groupid=0, jobs=1): err= 0: pid=934
read : io=51200KB, bw=44952KB/s, iops=611 , runt= 1139msec
clat (usec): min=169 , max=37580 , avg=1036.55, stdev=2763.23
lat (usec): min=177 , max=348498 , avg=80681.96, stdev=116920.84
bw (KB/s) : min=20461, max=43914, per=21.58%, avg=32187.50, stdev=16583.78
write: io=18768KB, bw=23170KB/s, iops=309 , runt= 810msec
clat (usec): min=29 , max=6487 , avg=599.24, stdev=822.88
lat (usec): min=30 , max=6488 , avg=600.15, stdev=822.92
bw (KB/s) : min=25791, max=25791, per=32.58%, avg=25791.00, stdev= 0.00
cpu : usr=11.42%, sys=29.00%, ctx=1099, majf=0, minf=100
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 r/w/d: total=696/251/0, short=0/0/0
lat (usec): 50=0.42%, 100=5.07%, 250=21.01%, 500=32.21%, 750=12.78%
lat (usec): 1000=8.13%
lat (msec): 2=12.35%, 4=5.91%, 10=1.37%, 20=0.21%, 50=0.53%
fio-sync: (groupid=0, jobs=1): err= 0: pid=935
read : io=51200KB, bw=40031KB/s, iops=581 , runt= 1279msec
clat (usec): min=136 , max=69759 , avg=1059.01, stdev=4088.37
lat (usec): min=136 , max=426361 , avg=123121.40, stdev=168310.03
bw (KB/s) : min= 1152, max=41088, per=14.16%, avg=21120.00, stdev=28239.02
write: io=18544KB, bw=21266KB/s, iops=311 , runt= 872msec
clat (usec): min=21 , max=6230 , avg=700.41, stdev=1121.58
lat (usec): min=22 , max=6230 , avg=701.36, stdev=1121.59
bw (KB/s) : min=24463, max=24463, per=30.90%, avg=24463.00, stdev= 0.00
cpu : usr=10.95%, sys=25.82%, ctx=1218, majf=0, minf=101
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 r/w/d: total=744/272/0, short=0/0/0
lat (usec): 50=2.95%, 100=4.92%, 250=27.56%, 500=27.85%, 750=11.52%
lat (usec): 1000=4.53%
lat (msec): 2=12.60%, 4=5.12%, 10=2.07%, 20=0.39%, 50=0.30%
lat (msec): 100=0.20%
fio-sync: (groupid=0, jobs=1): err= 0: pid=936
read : io=51200KB, bw=37291KB/s, iops=509 , runt= 1373msec
clat (usec): min=161 , max=215185 , avg=1437.34, stdev=8767.78
lat (usec): min=161 , max=603136 , avg=125978.14, stdev=204859.35
bw (KB/s) : min=11392, max=47440, per=19.72%, avg=29416.00, stdev=25489.79
write: io=16768KB, bw=20856KB/s, iops=292 , runt= 804msec
clat (usec): min=65 , max=4918 , avg=422.12, stdev=539.57
lat (usec): min=67 , max=4920 , avg=423.07, stdev=539.68
bw (KB/s) : min=21832, max=21832, per=27.58%, avg=21832.00, stdev= 0.00
cpu : usr=8.01%, sys=24.02%, ctx=907, majf=0, minf=100
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 r/w/d: total=700/235/0, short=0/0/0
lat (usec): 100=4.92%, 250=21.39%, 500=32.73%, 750=12.30%, 1000=9.09%
lat (msec): 2=12.62%, 4=4.39%, 10=1.50%, 20=0.32%, 50=0.53%
lat (msec): 100=0.11%, 250=0.11%
fio-sync: (groupid=1, jobs=1): err= 0: pid=937
read : io=51200KB, bw=50245KB/s, iops=684 , runt= 1019msec
slat (usec): min=121 , max=286991 , avg=72297.18, stdev=105654.85
clat (usec): min=53 , max=31994 , avg=2709.07, stdev=2840.41
lat (usec): min=704 , max=287045 , avg=75009.71, stdev=105287.53
bw (KB/s) : min=51426, max=51426, per=27.32%, avg=51426.00, stdev= 0.00
write: io=16464KB, bw=22461KB/s, iops=316 , runt= 733msec
slat (usec): min=24 , max=3153 , avg=330.84, stdev=489.91
clat (usec): min=419 , max=33603 , avg=3639.57, stdev=4236.94
lat (usec): min=478 , max=33826 , avg=3974.37, stdev=4338.95
bw (KB/s) : min=24379, max=24379, per=28.74%, avg=24379.00, stdev= 0.00
cpu : usr=12.77%, sys=26.52%, ctx=1006, majf=0, minf=287
IO depths : 1=0.2%, 2=0.4%, 4=99.4%, 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 r/w/d: total=698/232/0, short=0/0/0
lat (usec): 100=0.22%, 500=0.65%, 750=4.73%, 1000=5.05%
lat (msec): 2=40.32%, 4=30.54%, 10=14.95%, 20=2.69%, 50=0.86%
fio-sync: (groupid=1, jobs=1): err= 0: pid=938
read : io=51200KB, bw=47059KB/s, iops=604 , runt= 1088msec
slat (usec): min=130 , max=358388 , avg=83260.28, stdev=129458.80
clat (usec): min=102 , max=67340 , avg=3372.02, stdev=6322.67
lat (usec): min=622 , max=358491 , avg=86635.85, stdev=129417.38
bw (KB/s) : min=12607, max=50634, per=16.80%, avg=31620.50, stdev=26889.15
write: io=16608KB, bw=22751KB/s, iops=284 , runt= 730msec
slat (usec): min=25 , max=5338 , avg=439.66, stdev=761.37
clat (usec): min=56 , max=17895 , avg=3402.20, stdev=2946.54
lat (usec): min=272 , max=18365 , avg=3850.80, stdev=3181.21
bw (KB/s) : min=22282, max=22282, per=26.27%, avg=22282.00, stdev= 0.00
cpu : usr=7.36%, sys=29.44%, ctx=950, majf=0, minf=287
IO depths : 1=0.2%, 2=0.5%, 4=99.3%, 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 r/w/d: total=658/208/0, short=0/0/0
lat (usec): 100=0.12%, 250=0.12%, 500=1.04%, 750=6.12%, 1000=9.93%
lat (msec): 2=34.99%, 4=25.06%, 10=18.59%, 20=2.66%, 50=0.92%
lat (msec): 100=0.46%
fio-sync: (groupid=1, jobs=1): err= 0: pid=939
read : io=51200KB, bw=56575KB/s, iops=779 , runt= 905msec
slat (usec): min=146 , max=145608 , avg=30902.56, stdev=48531.74
clat (usec): min=52 , max=31585 , avg=2650.71, stdev=2961.84
lat (usec): min=255 , max=145934 , avg=33556.19, stdev=47885.92
bw (KB/s) : min=46912, max=46912, per=24.92%, avg=46912.00, stdev= 0.00
write: io=16144KB, bw=21242KB/s, iops=297 , runt= 760msec
slat (usec): min=25 , max=8131 , avg=443.39, stdev=810.93
clat (usec): min=260 , max=39539 , avg=3449.23, stdev=3888.78
lat (usec): min=301 , max=39674 , avg=3899.43, stdev=4136.47
bw (KB/s) : min=20992, max=20992, per=24.75%, avg=20992.00, stdev= 0.00
cpu : usr=15.49%, sys=28.76%, ctx=1064, majf=0, minf=287
IO depths : 1=0.2%, 2=0.4%, 4=99.4%, 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 r/w/d: total=705/226/0, short=0/0/0
lat (usec): 100=0.21%, 250=0.21%, 500=2.47%, 750=10.10%, 1000=10.10%
lat (msec): 2=29.22%, 4=29.43%, 10=14.61%, 20=3.33%, 50=0.32%
fio-sync: (groupid=1, jobs=1): err= 0: pid=940
read : io=51200KB, bw=54180KB/s, iops=753 , runt= 945msec
slat (usec): min=117 , max=375920 , avg=66142.90, stdev=109750.45
clat (usec): min=67 , max=41263 , avg=2894.77, stdev=4048.53
lat (usec): min=580 , max=375988 , avg=69041.09, stdev=110669.13
bw (KB/s) : min=66619, max=66619, per=35.39%, avg=66619.00, stdev= 0.00
write: io=15248KB, bw=26751KB/s, iops=407 , runt= 570msec
slat (usec): min=26 , max=4622 , avg=283.50, stdev=466.92
clat (usec): min=46 , max=16794 , avg=2686.25, stdev=2281.88
lat (usec): min=151 , max=17136 , avg=2976.10, stdev=2314.84
bw (KB/s) : min=28117, max=28117, per=33.15%, avg=28117.00, stdev= 0.00
cpu : usr=7.41%, sys=32.80%, ctx=998, majf=0, minf=280
IO depths : 1=0.2%, 2=0.4%, 4=99.4%, 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 r/w/d: total=712/232/0, short=0/0/0
lat (usec): 50=0.11%, 100=0.11%, 500=0.32%, 750=2.12%, 1000=6.25%
lat (msec): 2=43.43%, 4=34.32%, 10=10.28%, 20=1.48%, 50=1.59%
fio-sync: (groupid=2, jobs=1): err= 0: pid=941
read : io=51200KB, bw=5208.6KB/s, iops=69 , runt= 9830msec
clat (usec): min=10 , max=294486 , avg=7025.14, stdev=16334.26
lat (usec): min=556 , max=294487 , avg=55239.01, stdev=86107.89
bw (KB/s) : min= 864, max= 6016, per=18.87%, avg=3774.33, stdev=1203.80
write: io=15600KB, bw=1632.2KB/s, iops=22 , runt= 9558msec
clat (usec): min=900 , max=103773 , avg=22508.41, stdev=20551.21
lat (usec): min=900 , max=103774 , avg=22510.29, stdev=20551.73
bw (KB/s) : min= 794, max= 2759, per=25.10%, avg=1660.59, stdev=521.61
cpu : usr=3.05%, sys=15.77%, ctx=12114, majf=12800, minf=1004
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 r/w/d: total=682/211/0, short=0/0/0
lat (usec): 20=1.90%, 50=5.04%, 100=2.24%, 250=7.28%, 500=2.91%
lat (usec): 750=7.39%, 1000=2.24%
lat (msec): 2=12.32%, 4=13.55%, 10=16.01%, 20=10.75%, 50=14.78%
lat (msec): 100=3.25%, 250=0.22%, 500=0.11%
fio-sync: (groupid=2, jobs=1): err= 0: pid=942
read : io=51200KB, bw=5044.4KB/s, iops=67 , runt= 10150msec
clat (usec): min=10 , max=247762 , avg=6491.36, stdev=14697.19
lat (usec): min=550 , max=247763 , avg=31948.49, stdev=42478.43
bw (KB/s) : min= 781, max=10176, per=18.98%, avg=3797.22, stdev=2559.52
write: io=16576KB, bw=1656.8KB/s, iops=23 , runt= 10005msec
clat (usec): min=923 , max=364809 , avg=23129.71, stdev=30714.39
lat (usec): min=924 , max=364810 , avg=23131.24, stdev=30714.37
bw (KB/s) : min= 500, max= 2362, per=25.52%, avg=1687.89, stdev=425.40
cpu : usr=2.27%, sys=15.17%, ctx=10827, majf=12800, minf=501
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 r/w/d: total=685/238/0, short=0/0/0
lat (usec): 20=2.28%, 50=11.16%, 100=6.28%, 250=4.55%, 500=0.33%
lat (usec): 750=6.72%, 1000=1.52%
lat (msec): 2=8.99%, 4=10.83%, 10=16.90%, 20=13.00%, 50=13.76%
lat (msec): 100=3.25%, 250=0.33%, 500=0.11%
fio-sync: (groupid=2, jobs=1): err= 0: pid=943
read : io=51200KB, bw=5001.5KB/s, iops=68 , runt= 10237msec
clat (usec): min=11 , max=254433 , avg=6919.33, stdev=16107.05
lat (usec): min=560 , max=254434 , avg=41939.69, stdev=53471.97
bw (KB/s) : min= 893, max= 6144, per=16.93%, avg=3387.58, stdev=1339.51
write: io=17072KB, bw=1695.2KB/s, iops=24 , runt= 10071msec
clat (usec): min=895 , max=128709 , avg=21183.27, stdev=21267.97
lat (usec): min=896 , max=128711 , avg=21184.24, stdev=21268.05
bw (KB/s) : min= 447, max= 2641, per=25.82%, avg=1708.28, stdev=518.76
cpu : usr=2.74%, sys=15.44%, ctx=10595, majf=12800, minf=4337
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 r/w/d: total=703/245/0, short=0/0/0
lat (usec): 20=0.53%, 50=0.32%, 100=6.12%, 250=9.07%, 500=5.38%
lat (usec): 750=7.49%, 1000=4.54%
lat (msec): 2=10.23%, 4=10.02%, 10=16.35%, 20=12.76%, 50=13.08%
lat (msec): 100=3.69%, 250=0.32%, 500=0.11%
fio-sync: (groupid=2, jobs=1): err= 0: pid=944
read : io=51200KB, bw=5055.3KB/s, iops=67 , runt= 10128msec
clat (usec): min=21 , max=433871 , avg=6486.22, stdev=19272.63
lat (usec): min=559 , max=433872 , avg=33789.89, stdev=45259.35
bw (KB/s) : min= 1462, max= 6489, per=16.87%, avg=3374.17, stdev=1314.11
write: io=17376KB, bw=1740.3KB/s, iops=23 , runt= 9985msec
clat (usec): min=930 , max=145551 , avg=23341.93, stdev=23525.04
lat (usec): min=931 , max=145551 , avg=23342.81, stdev=23525.11
bw (KB/s) : min= 276, max= 2860, per=27.26%, avg=1802.94, stdev=661.30
cpu : usr=3.26%, sys=15.80%, ctx=10421, majf=12800, minf=4429
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 r/w/d: total=680/237/0, short=0/0/0
lat (usec): 50=0.33%, 100=4.58%, 250=8.94%, 500=6.54%, 750=9.60%
lat (usec): 1000=2.94%
lat (msec): 2=8.72%, 4=11.34%, 10=16.25%, 20=14.07%, 50=13.09%
lat (msec): 100=3.27%, 250=0.22%, 500=0.11%
fio-sync: (groupid=3, jobs=1): err= 0: pid=945
read : io=51200KB, bw=17118KB/s, iops=251 , runt= 2991msec
clat (usec): min=8 , max=151577 , avg=3038.04, stdev=9317.24
lat (usec): min=166 , max=456790 , avg=117936.08, stdev=174103.79
bw (KB/s) : min= 512, max=13572, per=12.91%, avg=8538.00, stdev=5168.43
write: io=18192KB, bw=7170.7KB/s, iops=106 , runt= 2537msec
clat (usec): min=78 , max=22421 , avg=992.89, stdev=2269.62
lat (usec): min=78 , max=22422 , avg=995.23, stdev=2269.71
bw (KB/s) : min= 3555, max= 8047, per=21.14%, avg=5647.00, stdev=2029.74
cpu : usr=7.36%, sys=30.77%, ctx=1470, majf=0, minf=98
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 r/w/d: total=753/270/0, short=0/0/0
lat (usec): 10=1.37%, 20=4.89%, 50=6.06%, 100=6.94%, 250=12.32%
lat (usec): 500=21.70%, 750=9.38%, 1000=7.82%
lat (msec): 2=10.36%, 4=8.50%, 10=4.50%, 20=3.03%, 50=2.54%
lat (msec): 100=0.49%, 250=0.10%
fio-sync: (groupid=3, jobs=1): err= 0: pid=946
read : io=51200KB, bw=16537KB/s, iops=241 , runt= 3096msec
clat (usec): min=89 , max=70931 , avg=3257.63, stdev=8467.69
lat (usec): min=171 , max=490749 , avg=117936.23, stdev=175280.34
bw (KB/s) : min= 446, max=19218, per=14.60%, avg=9660.00, stdev=7139.94
write: io=18000KB, bw=6909.9KB/s, iops=101 , runt= 2605msec
clat (usec): min=31 , max=24537 , avg=1257.88, stdev=3250.51
lat (usec): min=31 , max=24538 , avg=1301.89, stdev=3350.02
bw (KB/s) : min= 3302, max=11369, per=23.48%, avg=6273.00, stdev=3687.30
cpu : usr=5.17%, sys=33.28%, ctx=1592, majf=0, minf=98
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 r/w/d: total=747/264/0, short=0/0/0
lat (usec): 50=0.69%, 100=3.96%, 250=22.35%, 500=22.55%, 750=11.67%
lat (usec): 1000=7.32%
lat (msec): 2=11.77%, 4=7.81%, 10=5.24%, 20=2.77%, 50=3.36%
lat (msec): 100=0.49%
fio-sync: (groupid=3, jobs=1): err= 0: pid=947
read : io=51200KB, bw=16667KB/s, iops=236 , runt= 3072msec
clat (usec): min=161 , max=57722 , avg=3320.50, stdev=8396.76
lat (usec): min=183 , max=485531 , avg=93931.61, stdev=150931.30
bw (KB/s) : min= 6425, max=20128, per=20.03%, avg=13251.00, stdev=5806.20
write: io=16656KB, bw=6440.9KB/s, iops=87 , runt= 2586msec
clat (usec): min=30 , max=25328 , avg=1266.75, stdev=2842.17
lat (usec): min=30 , max=25330 , avg=1267.82, stdev=2842.76
bw (KB/s) : min= 2369, max= 9177, per=21.86%, avg=5839.25, stdev=2807.50
cpu : usr=5.21%, sys=32.89%, ctx=1577, majf=0, minf=97
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 r/w/d: total=727/225/0, short=0/0/0
lat (usec): 50=0.95%, 100=3.47%, 250=17.12%, 500=25.95%, 750=10.19%
lat (usec): 1000=8.19%
lat (msec): 2=13.45%, 4=9.24%, 10=4.20%, 20=3.47%, 50=3.15%
lat (msec): 100=0.63%
fio-sync: (groupid=3, jobs=1): err= 0: pid=948
read : io=51200KB, bw=17516KB/s, iops=244 , runt= 2923msec
clat (usec): min=10 , max=69987 , avg=3181.70, stdev=8004.01
lat (usec): min=182 , max=393727 , avg=63303.07, stdev=101782.71
bw (KB/s) : min= 1120, max=15939, per=14.11%, avg=9333.80, stdev=6639.27
write: io=16752KB, bw=6621.4KB/s, iops=89 , runt= 2530msec
clat (usec): min=79 , max=26294 , avg=1273.10, stdev=3044.90
lat (usec): min=80 , max=26331 , avg=1276.46, stdev=3045.78
bw (KB/s) : min= 1989, max= 9389, per=21.18%, avg=5658.50, stdev=3469.47
cpu : usr=4.45%, sys=36.26%, ctx=1398, majf=0, minf=97
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 r/w/d: total=715/227/0, short=0/0/0
lat (usec): 20=3.18%, 50=1.80%, 100=4.78%, 250=12.95%, 500=24.52%
lat (usec): 750=10.08%, 1000=8.28%
lat (msec): 2=14.33%, 4=7.32%, 10=5.31%, 20=4.35%, 50=2.65%
lat (msec): 100=0.42%
 
Run status group 0 (all jobs):
READ: io=204800KB, aggrb=149162KB/s, minb=38185KB/s,
maxb=46030KB/s, mint=1139msec, maxt=1373msec
WRITE: io=70528KB, aggrb=79156KB/s, minb=18903KB/s, maxb=23726KB/s,
mint=804msec, maxt=891msec
 
Run status group 1 (all jobs):
READ: io=204800KB, aggrb=188235KB/s, minb=48188KB/s,
maxb=57932KB/s, mint=905msec, maxt=1088msec
WRITE: io=64464KB, aggrb=84821KB/s, minb=21751KB/s, maxb=27392KB/s,
mint=570msec, maxt=760msec
 
Run status group 2 (all jobs):
READ: io=204800KB, aggrb=20005KB/s, minb=5121KB/s, maxb=5333KB/s,
mint=9830msec, maxt=10237msec
WRITE: io=66624KB, aggrb=6615KB/s, minb=1671KB/s, maxb=1781KB/s,
mint=9558msec, maxt=10071msec
 
Run status group 3 (all jobs):
READ: io=204800KB, aggrb=66149KB/s, minb=16934KB/s, maxb=17936KB/s,
mint=2923msec, maxt=3096msec
WRITE: io=69600KB, aggrb=26717KB/s, minb=6595KB/s, maxb=7342KB/s,
mint=2530msec, maxt=2605msec
 
Disk stats (read/write):
vdb: ios=61002/6654, merge=0/183, ticks=27270/205780,
in_queue=232220, util=69.46%

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