Hi Jens,
Thanks for update.
>Fio can't do a double split like that in a single job, but if you can
>tolerate mixing the 60/40 and 70/30 read/write between sequential and
>random, then you can make it work.
>Or you can split it in two jobs, one doing the sequential part and the
>other the random. The you can use the flow parameters to pace them at
>20/80 ratios.
I tried to use choice 2.
------------------------------
[global]
ioengine=posixaio
invalidate=0
norandommap
ramp_time=5
iodepth=8
runtime=10
time_based
direct=1
#numjobs=1
group_reporting
filesize=10M
blocksize=8k
[hdisk2]
stonewall
filename=/dev/rhdisk2
rw=readwrite
rwmixread=60
flow=2
[hdisk2a]
stonewall
filename=/dev/rhdisk2
rw=randrw
rwmixread=70
flow=8
------------------------------
# ./fio inftest.conf
hdisk2: (g=0): rw=rw, bs=8K-8K/8K-8K/8K-8K, ioengine=posixaio, iodepth=8
hdisk2a: (g=1): rw=randrw, bs=8K-8K/8K-8K/8K-8K, ioengine=posixaio, iodepth=8
fio-2.3
Starting 2 processes
Jobs: 1 (f=0): [/(1),P(1)] [-.-% done] [0KB/0KB/0KB /s] [0/0/0 iops] [eta 00m:30s]
..
The fio process eat a lot of cpu but no disk activity. Some output from topas. So i think i don't use correctly the flow parmeter and perhaps do some loops somewhere into fio.
------------------
CPU User% Kern% Wait% Idle%
ALL 46.9 53.1 0.0 0.0
Disk Busy% KBPS TPS KB-Read KB-Writ
hdisk2 0.0 0.0 0.0 0.0 0.0
Name PID CPU% PgSp Owner
fio 504000 46.8 0.3 root
sshd 549094 28.6 1.0 root
fio 393304 24.0 0.2 root
topas 462868 0.1 1.9 root
--------------------------------------
If i do a ctrl+c, i have the following:
# ./fio inftest.conf
hdisk2: (g=0): rw=rw, bs=8K-8K/8K-8K/8K-8K, ioengine=posixaio, iodepth=8
hdisk2a: (g=1): rw=randrw, bs=8K-8K/8K-8K/8K-8K, ioengine=posixaio, iodepth=8
fio-2.3
Starting 2 processes
Jobs: 1 (f=0): [/(1),P(1)] [-.-% done] [0KB/0KB/0KB /s] [0/0/0 iops] [eta 00m:30s]
fio: terminating on signal 2
fio: terminating on signal 2
Jobs: 0 (f=0): [/(1),P(1)] [-.-% done] [0KB/0KB/0KB /s] [0/0/0 iops] [eta 00m:30s]
hdisk2: (groupid=0, jobs=1): err= 0: pid=504000: Fri Mar 25 21:19:52 2016
read : io=32768B, bw=32000KB/s, iops=0, runt= 1msec
slat (usec): min=16, max=194, avg=25.25, stdev=15.63
clat percentiles (usec):
| 1.00th=[ 0], 5.00th=[ 0], 10.00th=[ 0], 20.00th=[ 0],
| 30.00th=[ 0], 40.00th=[ 0], 50.00th=[ 0], 60.00th=[ 0],
| 70.00th=[ 0], 80.00th=[ 0], 90.00th=[ 0], 95.00th=[ 0],
| 99.00th=[ 0], 99.50th=[ 0], 99.90th=[ 0], 99.95th=[ 0],
| 99.99th=[ 0]
write: io=16384B, bw=16000KB/s, iops=0, runt= 1msec
slat (usec): min=16, max=105, avg=26.12, stdev=13.44
clat percentiles (usec):
| 1.00th=[ 0], 5.00th=[ 0], 10.00th=[ 0], 20.00th=[ 0],
| 30.00th=[ 0], 40.00th=[ 0], 50.00th=[ 0], 60.00th=[ 0],
| 70.00th=[ 0], 80.00th=[ 0], 90.00th=[ 0], 95.00th=[ 0],
| 99.00th=[ 0], 99.50th=[ 0], 99.90th=[ 0], 99.95th=[ 0],
| 99.99th=[ 0]
cpu : usr=0.00%, sys=0.00%, ctx=0, majf=0, minf=0
IO depths : 1=0.0%, 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=98.0%, 8=2.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
issued : total=r=0/w=0/d=0, short=r=0/w=0/d=0, drop=r=0/w=0/d=0
latency : target=0, window=0, percentile=100.00%, depth=8
Run status group 0 (all jobs):
READ: io=32KB, aggrb=32000KB/s, minb=32000KB/s, maxb=32000KB/s, mint=1msec, maxt=1msec
WRITE: io=16KB, aggrb=16000KB/s, minb=16000KB/s, maxb=16000KB/s, mint=1msec, maxt=1msec
Run status group 1 (all jobs):
#
Regards,
Thierry
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