Hi All,
This is neto from Brazil
How are you?
I am trying to simulate the actual IO load as seen in the existing production environment which shows about 10 iops/user with 72% writes.
I can’t get the rate_iops to work in fio. Most of the time the job does not complete, first the eta counts down from 10 then the eta time starts increasing. Sometimes I get a report but most of the time I have to ctrl-c to escape. If there is a report it shows iops=0.
Does anyone have used that before?
Thank you very much
neto
-- FIO output
C:\Temp\VDI Test data>fio VDI_prodn.txt
VDI: (g=0): rw=randrw, bs=4K-4K/4K-4K/4K-4K, ioengine=windowsaio, iodepth=1
fio-2.0.14
Starting 1 thread
Jobs: 1 (f=1), CR=20/0 IOPS: [m] [0.0% done] [0K/0K/0K /s] [0 /0 /0 iops] [eta 03d:15h:24m:57s]
fio: terminating on signal 2
Jobs: 1 (f=1), CR=20/0 IOPS: [m] [0.0% done] [0K/0K/0K /s] [0 /0 /0 iops] [eta 04d:12h:07m:10s]
VDI: (groupid=0, jobs=1): err= 0: pid=4944: Wed Mar 06 17:20:07 2013
Description : [Emulation of one busy VDI desktop]
read : io=8192 B, bw=173 B/s, iops=0 , runt= 47317msec
slat (usec): min=106 , max=158 , avg=132.00, stdev=36.77
clat (usec): min=1032 , max=1112 , avg=1072.00, stdev=56.57
lat (usec): min=1190 , max=1218 , avg=1204.00, stdev=19.80
clat percentiles (usec):
| 1.00th=[ 1032], 5.00th=[ 1032], 10.00th=[ 1032], 20.00th=[ 1032],
| 30.00th=[ 1032], 40.00th=[ 1032], 50.00th=[ 1032], 60.00th=[ 1112],
| 70.00th=[ 1112], 80.00th=[ 1112], 90.00th=[ 1112], 95.00th=[ 1112],
| 99.00th=[ 1112], 99.50th=[ 1112], 99.90th=[ 1112], 99.95th=[ 1112],
| 99.99th=[ 1112]
bw (KB/s) : min= 0, max= 0, per=100.00%, avg= 0.00, stdev= 0.00
write: io=8192 B, bw=173 B/s, iops=0 , runt= 47317msec
slat (usec): min=191 , max=1736 , avg=963.50, stdev=1092.48
clat (usec): min=1182 , max=1918 , avg=1550.00, stdev=520.43
lat (usec): min=2109 , max=2918 , avg=2513.50, stdev=572.05
clat percentiles (usec):
| 1.00th=[ 1176], 5.00th=[ 1176], 10.00th=[ 1176], 20.00th=[ 1176],
| 30.00th=[ 1176], 40.00th=[ 1176], 50.00th=[ 1176], 60.00th=[ 1912],
| 70.00th=[ 1912], 80.00th=[ 1912], 90.00th=[ 1912], 95.00th=[ 1912],
| 99.00th=[ 1912], 99.50th=[ 1912], 99.90th=[ 1912], 99.95th=[ 1912],
| 99.99th=[ 1912]
bw (KB/s) : min= 0, max= 0, per=100.00%, avg= 0.00, stdev= 0.00
lat (msec) : 2=100.00%
^C
C:\Temp\VDI Test data>
C:\Temp\VDI Test data>
C:\Temp\VDI Test data>fio VDI_prodn.txt
VDI: (g=0): rw=randrw, bs=4K-4K/4K-4K/4K-4K, ioengine=windowsaio, iodepth=1
fio-2.0.14
Starting 1 thread
Jobs: 1 (f=1), CR=20/0 IOPS: [m] [0.0% done] [0K/0K/0K /s] [0 /0 /0 iops] [eta 01d:08h:12m:21s]
fio: terminating on signal 2
^Cbs: 1 (f=1), CR=20/0 IOPS: [m] [0.0% done] [0K/0K/0K /s] [0 /0 /0 iops] [eta 05d:13h:25m:27s]
C:\Temp\VDI Test data>
C:\Temp\VDI Test data>
-- FIO config file
# This job file is to be used with 60 desktops to gather data to be used in sizing for 480 busy VDI desktops
[global]
description=Emulation of one busy VDI desktop
[VDI]
bs=4k
ioengine=windowsaio
rw=randrw
# with the actual disk IO has a high % of writes - 70 to 74%, use 72%
rwmixwrite=72
# iops based on actual of between 6.75 and 8.9 per user, use 10/VDI
rate_iops=10
runtime=10
time_based
# select data file based on actual of 2075GB for 395 users = 5.3GB per user, use 5.5GB
filename=.\difference.dat
direct=1
# attempt to use only 20% of the date file
#size=20%
thread
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