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From: lsllcm on 29 Apr 2010 01:53
Hi All,

I have one question about ORION test.

Below is my test data from ORION tool. When the IOPS = 360, the
latency time is 11.09 ms. So the current disk system can support 360
IOPS, is it right? If the system have heavier load and IOPS>360, it
will cause wait.

1 2 3 4 5 6 7
8 9 10 11
IOPS 136 230 300 360 407
446 479 505 532 555 570
LAT 7.35 8.67 9.97 11.09
12.28 13.44 14.6 15.83 16.91
18.01 19.28

Thanks

mytest_20100426_1051_summary.txt
------------------------------------------------------------------------------------------------
ORION VERSION 11.1.0.7.0

Commandline:
-run simple -testname mytest -num_disks 4

This maps to this test:
Test: mytest
Small IO size: 8 KB
Large IO size: 1024 KB
IO Types: Small Random IOs, Large Random IOs
Simulated Array Type: CONCAT
Write: 0%
Cache Size: Not Entered
Duration for each Data Point: 60 seconds
Small Columns:, 0
Large Columns:, 0, 1, 2, 3, 4, 5,
6, 7, 8
Total Data Points: 29

Name: /dev/sda5 Size: 102404703744
Name: /dev/sdb1 Size: 102404703744
Name: /dev/sdc1 Size: 102404703744
Name: /dev/sdd1 Size: 102404703744
4 FILEs found.

Maximum Large MBPS=62.98 @ Small=0 and Large=7
Maximum Small IOPS=648 @ Small=20 and Large=0
Minimum Small Latency=7.35 @ Small=1 and Large=0

mytest_20100426_1051_lat.csv
-----------------------------------------------------------------------------------------
Large/Small, 1, 2, 3, 4, 5, 6,
7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20
0, 7.35, 8.67, 9.97, 11.09, 12.28, 13.44, 14.60,
15.83, 16.91, 18.01, 19.28, 20.57, 21.83, 23.04, 24.37,
25.61, 27.09, 28.40, 29.44, 30.82


mytest_20100426_1051_iops.csv
----------------------------------------------------------------------------------------
Large/Small, 1, 2, 3, 4, 5, 6,
7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20
0, 136, 230, 300, 360, 407, 446,
479, 505, 532, 555, 570, 583, 595, 607,
615, 624, 627, 633, 645, 648

From: vsevolod afanassiev on 29 Apr 2010 07:24
I am afraid ORION doesn't work - it produces misleading results. We
tried it for AIX and Sun servers and found that results didn't match
tests done with Oracle.
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