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From Eric Caspole <eric.casp...@amd.com>
Subject Average images per Home Page almost always fails
Date Thu, 11 Feb 2010 01:59:32 GMT
Hi Olio Experts,
I now have my system running apparently correctly, with no errors in  
the apache logs except for the "deprecated" messages like:

[Wed Feb 10 18:34:53 2010] [error] [client 10.236.44.157] PHP  
Deprecated:  Function split() is deprecated in /usr/local/apache2/ 
htdocs/oliophp/classes/MemCached.php on line 26
[Wed Feb 10 18:34:53 2010] [error] [client 10.236.44.157] PHP  
Deprecated:  Function session_unregister() is deprecated in /usr/ 
local/apache2/htdocs/oliophp/public_html/calendar.php on line 38

which seems to be new since PHP 5.3.

I have a system with over 20 cores, and over 32GB memory running  
CentOS x64. In every run but one I have made, the runs always fail  
with something like:

  Average images loaded per Home Page 2.96>= 3 FAILED

My system is only 3% busy at 125 concurrent users and no disk I/O  
wait shown in vmstat.  I have memcached, mysql, and the filestore all  
running on the SUT. Nothing seems wrong with the setup and there are  
no helpful errors shown anywhere. The faban load driver system is  
only about 2% busy during the test. It really isn't any different  
with 25 up to 125 users.

What is the trick, if any, to make this one statistic pass? I don't  
have the flexibility to change the disk or network setup in this  
configuration. I am not trying to shoot for the moon here, I just  
want a reproduceable stable setup at a moderately low load.

Thanks for any advice,
Eric



UIDriver
UIDriver metric:25.347 ops/sec
Driver start:Wed Feb 10 19:25:19 CST 2010
Driver end:Wed Feb 10 19:37:19 CST 2010
Total number of operations: 15208
Pass/Fail:FAILED

Operation Mix
TypeSuccess
CountFailure
CountMixRequired Mix
(2% deviation allowed)Pass/Fail
HomePage3988026.22%26.15%PASSED
Login1581010.4%10.22%PASSED
TagSearch5171034%33.45%PASSED
EventDetail3746024.63%24.68%PASSED
PersonDetail34802.29%2.61%PASSED
AddPerson1040.68%.84%PASSED
AddEvent27001.78%2.04%PASSED

Response Times (seconds)
TypeAvgMaxSD90th%Reqd. 90th%Pass/Fail
HomePage0.0743.0630.1490.2601.000PASSED
Login0.0383.0260.1110.0401.000PASSED
TagSearch0.0933.0590.1310.2802.000PASSED
EventDetail0.0803.0900.1500.2602.000PASSED
PersonDetail0.0940.7150.0940.2802.000PASSED
AddPerson0.3393.3220.3270.4803.000PASSED
AddEvent0.3660.9060.1240.5604.000PASSED

Cycle/Think Times (seconds)
TypeTargeted AvgActual AvgMinMaxPass/Fail
HomePage4.9414.9430.00925.000PASSED
Login4.7674.7690.01425.000PASSED
TagSearch4.7844.7870.01625.000PASSED
EventDetail4.9794.9800.01725.000PASSED
PersonDetail5.3245.3260.07825.000PASSED
AddPerson4.8674.8662.05124.423PASSED
AddEvent4.9374.9372.14713.701PASSED

Miscellaneous Statistics
DescriptionResultsTargeted
ResultsAllowed
DeviationPass/Fail
% EventDetail views where attendee added9.10>= 6PASSED
EventDetail count where attendee can be added3501
Average images references on Home Page10.00100.5PASSED
Average images loaded per Home Page2.96>= 3FAILED
Average image bytes received per Home Page17476.58>= 15000PASSED
Average images on Tag Search Results3.40> 0PASSED
Average images on Event Detail1.00>= 1PASSED
Total successful AddEvent calls332
Total successful AddPerson calls136
Concurrent user to ops/sec ratio4.93<= 5.25PASSED

Little's Law Verification
Number of users=125
Sum of Avg. RT * TPS for all Tx Types=122.9246


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