Hi All,
This is neto from Brazil
How are you?
I just need a help to make sure I understood correctly the report (see below --Output).
Trying to generate 80% Read and 20% Write - 8KB block size
Reads
IOPS: 15330
Latency: (clat) 628usecs - 0.628ms
Writes
IOPS: 3827
Latency: (clat) 577usecs - 0.577ms
Am I doing the correct analysis?
One question is: Is it possible to have global IOPS and latency?
All the best
neto
-- Config file (Windows)
[workload]
bs=8k
ioengine=windowsaio
iodepth=4
size=10g
numjobs=3
direct=1
runtime=30
filename=\\.\PhysicalDrive1
filename=\\.\PhysicalDrive2
filename=\\.\PhysicalDrive3
filename=\\.\PhysicalDrive5
filename=\\.\PhysicalDrive6
filename=\\.\PhysicalDrive7
rw=randrw
rwmixread=80
rwmixwrite=20
thread
group_reporting
-- Output
workload: (groupid=0, jobs=3): err= 0: pid=2096: Mon Jan 28 18:23:32 2013
read : io=3594.7MB, bw=122645KB/s, iops=15330 , runt= 30008msec
slat (usec): min=2 , max=2263 , avg= 5.92, stdev= 4.05
clat (usec): min=128 , max=51478 , avg=628.97, stdev=789.58
lat (usec): min=134 , max=51482 , avg=634.89, stdev=789.56
clat percentiles (usec):
| 1.00th=[ 169], 5.00th=[ 185], 10.00th=[ 195], 20.00th=[ 213],
| 30.00th=[ 237], 40.00th=[ 306], 50.00th=[ 572], 60.00th=[ 756],
| 70.00th=[ 796], 80.00th=[ 868], 90.00th=[ 988], 95.00th=[ 1224],
| 99.00th=[ 2640], 99.50th=[ 4832], 99.90th=[13376], 99.95th=[15040],
| 99.99th=[15936]
bw (KB/s) : min=17280, max=48528, per=33.37%, avg=40921.04, stdev=6090.31
write: io=918768KB, bw=30617KB/s, iops=3827 , runt= 30008msec
slat (usec): min=3 , max=2260 , avg= 7.34, stdev= 6.94
clat (usec): min=262 , max=19853 , avg=577.21, stdev=629.07
lat (usec): min=271 , max=19862 , avg=584.54, stdev=629.35
clat percentiles (usec):
| 1.00th=[ 338], 5.00th=[ 378], 10.00th=[ 402], 20.00th=[ 434],
| 30.00th=[ 458], 40.00th=[ 482], 50.00th=[ 502], 60.00th=[ 532],
| 70.00th=[ 564], 80.00th=[ 620], 90.00th=[ 732], 95.00th=[ 812],
| 99.00th=[ 1304], 99.50th=[ 2768], 99.90th=[12224], 99.95th=[15168],
| 99.99th=[15680]
bw (KB/s) : min= 4080, max=12368, per=33.36%, avg=10213.68, stdev=1566.17
lat (usec) : 250=26.81%, 500=21.78%, 750=16.54%, 1000=26.96%
lat (msec) : 2=6.67%, 4=0.69%, 10=0.37%, 20=0.18%, 50=0.01%
lat (msec) : 100=0.01%
cpu : usr=3.33%, sys=16.67%, ctx=0, majf=0, minf=0
IO depths : 1=0.1%, 2=0.1%, 4=100.0%, 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=460040/w=114846/d=0, short=r=0/w=0/d=0
Run status group 0 (all jobs):
READ: io=3594.7MB, aggrb=122644KB/s, minb=122644KB/s, maxb=122644KB/s, mint=3
0008msec, maxt=30008msec
WRITE: io=918768KB, aggrb=30617KB/s, minb=30617KB/s, maxb=30617KB/s, mint=3000
8msec, maxt=30008msec
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