Best way to compare two results of jmeter

[Marek Czernek]

Hi there,

is there any 'supported' way to compare the results of 2 jmeter runs? I
googled around and found an old email from 2004 [1] basically saying
that there is no recommended solution other than a custom-made analysis.
Have there been any solutions to this problem?

I can also see a Jenkins plugin [2] though I have no idea in what state
the plugin is, and as such, how viable it is to run it. Last but not
least, there's some Grafana integration blog [3].  Does anyone have any
other suggestions? How would you compare two results programmatically to
see if there is degraded performance?

[1]
http://mail-archives.apache.org/mod_mbox/jmeter-user/200401.mbox/%***@exchange-va.noblestar.com%3E

[2] https://wiki.jenkins.io/display/JENKINS/Performance+Plugin

[3]
http://www.testautomationguru.com/jmeter-real-time-results-influxdb-grafana/

Cheers,

[Bo Bodnar]

I've been away from jmeter for a while. Working from memory:

The scripts I used had functional breakdown with the topic of interest
being latency. Each functional area had latency samples associated with
it. For example "login" for run1 would have X samples and the same was for
run2. It is important that measurement conditions be identical for each
run; otherwise, the performance of interest may be affected by
uncontrolled conditions (e.g., time-dependent internet delays). It is also
VERY important that the system of interest be in exactly the same condition
when the runs are done; if not, there may be memory impacts. I then did
paired t-testing to see if the runs were statistically similar (I think I
used a confidence interval of 0.95). X should be greater than around 10;
otherwise, there may be too much variability in the measurements and you
may have false conclusions.


Bohdan L. Bodnar
Lead Performance Engineer
1-312-871-5163




E-mail: ***@us.ibm.com 222 South Riverside Plaza
Chicago, IL 60606
United States






From: Marek Czernek <***@redhat.com>
To: ***@jmeter.apache.org
Date: 08/30/2018 09:11 AM
Subject: Best way to compare two results of jmeter



Hi there,

is there any 'supported' way to compare the results of 2 jmeter runs? I
googled around and found an old email from 2004 [1] basically saying
that there is no recommended solution other than a custom-made analysis.
Have there been any solutions to this problem?

I can also see a Jenkins plugin [2] though I have no idea in what state
the plugin is, and as such, how viable it is to run it. Last but not
least, there's some Grafana integration blog [3].  Does anyone have any
other suggestions? How would you compare two results programmatically to
see if there is degraded performance?

[1]
http://mail-archives.apache.org/mod_mbox/jmeter-user/200401.mbox/%***@exchange-va.noblestar.com%3E


[2]
https://wiki.jenkins.io/display/JENKINS/Performance+Plugin


[3]
http://www.testautomationguru.com/jmeter-real-time-results-influxdb-grafana/


Cheers,
--

Marek Czernek

JWS/JBCS Associate Quality Engineer, RHCA

Find me at www.halfastack.com

[Alexander Podelko]

Hi Marek,
I do use the Jenkins Performance Plugin for that purpose for some time, I'd say that you get quite a lot for free straight out of the box. Pretty decent. Another thing is that I haven't found practically any documentation (although it is pretty straightforward for a simple use - and there is a few posts how to setup it) and it is still not clear for me what to do if I'd need something else from it....

Regards,Alex


On Thursday, August 30, 2018, 10:11:22 AM EDT, Marek Czernek <***@redhat.com> wrote:

Hi there,

is there any 'supported' way to compare the results of 2 jmeter runs? I
googled around and found an old email from 2004 [1] basically saying
that there is no recommended solution other than a custom-made analysis.
Have there been any solutions to this problem?

I can also see a Jenkins plugin [2] though I have no idea in what state
the plugin is, and as such, how viable it is to run it. Last but not
least, there's some Grafana integration blog [3].  Does anyone have any
other suggestions? How would you compare two results programmatically to
see if there is degraded performance?

[1]
http://mail-archives.apache.org/mod_mbox/jmeter-user/200401.mbox/%***@exchange-va.noblestar.com%3E

[2] https://wiki.jenkins.io/display/JENKINS/Performance+Plugin

[3]
http://www.testautomationguru.com/jmeter-real-time-results-influxdb-grafana/

Cheers,

[Niraj]

I was searching something similar last week and after spending couple of
days, i came up with following options


- Checkout below project on Github. It will take sometime to set it up
but it's will give you comparison across build with some other features as
well.

https://github.com/innogames/JMeter-Control-Center

[image: image.png]


- Performance plugin using Jenkins. Only issue with that, export option
is not available and when you have results for few months, it's become
difficult to read results inside Jenkins.
- I wrote one python script which will give you comparison for response
time across different runs. If you want to check that, drop me email i will
share code with you.

Hope this helps.

-Niraj

On Thu, Aug 30, 2018 at 8:21 PM Alexander Podelko

Post by Alexander Podelko
Hi Marek,
I do use the Jenkins Performance Plugin for that purpose for some time,
I'd say that you get quite a lot for free straight out of the box. Pretty
decent. Another thing is that I haven't found practically any documentation
(although it is pretty straightforward for a simple use - and there is a
few posts how to setup it) and it is still not clear for me what to do if
I'd need something else from it....
Regards,Alex
On Thursday, August 30, 2018, 10:11:22 AM EDT, Marek Czernek <
Hi there,
is there any 'supported' way to compare the results of 2 jmeter runs? I
googled around and found an old email from 2004 [1] basically saying
that there is no recommended solution other than a custom-made analysis.
Have there been any solutions to this problem?
I can also see a Jenkins plugin [2] though I have no idea in what state
the plugin is, and as such, how viable it is to run it. Last but not
least, there's some Grafana integration blog [3]. Does anyone have any
other suggestions? How would you compare two results programmatically to
see if there is degraded performance?
[1]
[2] https://wiki.jenkins.io/display/JENKINS/Performance+Plugin
[3]
http://www.testautomationguru.com/jmeter-real-time-results-influxdb-grafana/
Cheers,
--
Marek Czernek
JWS/JBCS Associate Quality Engineer, RHCA
Find me at www.halfastack.com

[Alexander Podelko]

Just saw another solution in that area https://dzone.com/articles/jmeter-elasticsearch-live-monitoring

On Thursday, August 30, 2018, 10:50:56 AM EDT, Alexander Podelko <***@yahoo.com> wrote:

Hi Marek,
I do use the Jenkins Performance Plugin for that purpose for some time, I'd say that you get quite a lot for free straight out of the box. Pretty decent. Another thing is that I haven't found practically any documentation (although it is pretty straightforward for a simple use - and there is a few posts how to setup it) and it is still not clear for me what to do if I'd need something else from it....

Regards,Alex


On Thursday, August 30, 2018, 10:11:22 AM EDT, Marek Czernek <***@redhat.com> wrote:

Hi there,

is there any 'supported' way to compare the results of 2 jmeter runs? I
googled around and found an old email from 2004 [1] basically saying
that there is no recommended solution other than a custom-made analysis.
Have there been any solutions to this problem?

I can also see a Jenkins plugin [2] though I have no idea in what state
the plugin is, and as such, how viable it is to run it. Last but not
least, there's some Grafana integration blog [3].  Does anyone have any
other suggestions? How would you compare two results programmatically to
see if there is degraded performance?

[1]
http://mail-archives.apache.org/mod_mbox/jmeter-user/200401.mbox/%***@exchange-va.noblestar.com%3E

[2] https://wiki.jenkins.io/display/JENKINS/Performance+Plugin

[3]
http://www.testautomationguru.com/jmeter-real-time-results-influxdb-grafana/

Cheers,

[Marek Czernek]

I saw the Grafana integration, but in my mind, any solution that
involves external DB seems unsuitable for my simple needs. I am testing
the Jenkins plugin, though I have been running into problems with
comparing two runs. I wonder:

1. Do you need to fire the JMX testplan using the plugin to be able to
compare results across builds with the performance plugin?
2. Do you need any Jenkins plugin other than the performance plugin for
cross-build comparison?

In the worst case, I'll implement a solution similar to what Bo
suggested, i.e. simply execute calculation on top of the CSVs. The
database solutions seem great if you need to really work with the data;
for my purposes, I mainly want to see whether there's a performance
difference from the previous build and I don't care that much about the
visual output.

Cheers,
--
Marek Czernek

JWS/JBCS Associate Quality Engineer, RHCA

Find me at www.halfastack.com

Post by Alexander Podelko
Just saw another solution in that area https://dzone.com/articles/jmeter-elasticsearch-live-monitoring
Hi Marek,
I do use the Jenkins Performance Plugin for that purpose for some time, I'd say that you get quite a lot for free straight out of the box. Pretty decent. Another thing is that I haven't found practically any documentation (although it is pretty straightforward for a simple use - and there is a few posts how to setup it) and it is still not clear for me what to do if I'd need something else from it....
Regards,Alex
Hi there,
is there any 'supported' way to compare the results of 2 jmeter runs? I
googled around and found an old email from 2004 [1] basically saying
that there is no recommended solution other than a custom-made analysis.
Have there been any solutions to this problem?
I can also see a Jenkins plugin [2] though I have no idea in what state
the plugin is, and as such, how viable it is to run it. Last but not
least, there's some Grafana integration blog [3].  Does anyone have any
other suggestions? How would you compare two results programmatically to
see if there is degraded performance?
[1]
[2] https://wiki.jenkins.io/display/JENKINS/Performance+Plugin
[3]
http://www.testautomationguru.com/jmeter-real-time-results-influxdb-grafana/
Cheers,

[Alexander Podelko]

Marek,
My understanding is no for both questions (from a simple user point of view).

The step involving plug in (where you specify what to do) is named "Publish performance test result reports" and the input is a jtl file. So it appears that you just need to get the result file there - and it keeps historic data and do comparison with previous run (so it still should be a Jenkins job). I haven't found anything about internals yet (well, except https://github.com/jenkinsci/performance-plugin ).

Here is explanation on the Jenkins plugin config page:


This plugin understands the JMeter analysis report XMLformat, JMeter Summariser report text format, SOAPUI report in JUnit format, Iago format as recorded while parrot server is running, and LoadRunner analysis format.
This plug-in does not perform the actual analysis; it onlydisplays useful information about analysis results, such as averageresponding time, historical result trend, web UI for viewing analysisreports, and so on.
To use this feature, first set up your build to run tests, then select the adequate parser for your tests (JMeter, JUnit, or Iago) and finallyyou have to specify the path to the different performance files. By default the plugin will use the **/*.jtl pattern forJMeter, **/TEST*.xml for JUnit tests ,**/*.log pattern for JMeter Summariser, parrot-server-stats.log for Iago, and **/*.mdb for LoadRunner.

There some post with instructions how to setup it like https://www.blazemeter.com/blog/how-to-use-the-jenkins-performance-plugin
As per other plugins, nothing special was needed in my case - but there were some plugins already installed there. My struggle there, for example, was to start JMeter tests remotely and getting results back to Jenkins (most examples assume that this is on the same machine) - which I did using "Send build artifacts over SSH" (which, as far as I understand, uses another plugin) and modifying folder access rights... I guess there are other options to do that.

Regards,Alex



On Friday, August 31, 2018, 9:30:18 AM EDT, Marek Czernek <***@redhat.com> wrote:

I saw the Grafana integration, but in my mind, any solution that
involves external DB seems unsuitable for my simple needs. I am testing
the Jenkins plugin, though I have been running into problems with
comparing two runs. I wonder:

1. Do you need to fire the JMX testplan using the plugin to be able to
    compare results across builds with the performance plugin?
2. Do you need any Jenkins plugin other than the performance plugin for
    cross-build comparison?

In the worst case, I'll implement a solution similar to what Bo
suggested, i.e. simply execute calculation on top of the CSVs. The
database solutions seem great if you need to really work with the data;
for my purposes, I mainly want to see whether there's a performance
difference from the previous build and I don't care that much about the
visual output.

Cheers,
--
Marek Czernek

JWS/JBCS Associate Quality Engineer, RHCA

Find me at www.halfastack.com

Post by Alexander Podelko
Just saw another solution in that area https://dzone.com/articles/jmeter-elasticsearch-live-monitoring
 
  Hi Marek,
I do use the Jenkins Performance Plugin for that purpose for some time, I'd say that you get quite a lot for free straight out of the box. Pretty decent. Another thing is that I haven't found practically any documentation (although it is pretty straightforward for a simple use - and there is a few posts how to setup it) and it is still not clear for me what to do if I'd need something else from it....
Regards,Alex
 
  Hi there,
is there any 'supported' way to compare the results of 2 jmeter runs? I
googled around and found an old email from 2004 [1] basically saying
that there is no recommended solution other than a custom-made analysis.
Have there been any solutions to this problem?
I can also see a Jenkins plugin [2] though I have no idea in what state
the plugin is, and as such, how viable it is to run it. Last but not
least, there's some Grafana integration blog [3].  Does anyone have any
other suggestions? How would you compare two results programmatically to
see if there is degraded performance?
[1]
[2] https://wiki.jenkins.io/display/JENKINS/Performance+Plugin
[3]
http://www.testautomationguru.com/jmeter-real-time-results-influxdb-grafana/
Cheers,

[Bo Bodnar]

Here's an example of a paired t-test; I did this in R using RStudio since
this is easy to do. I made up the numbers. The whole thing can be done in
Excel but I haven't done that for a few years (R is much easier).

x = c(1,-2, 3, 4, 5, 6)
y = c(5, -6, 9, 8, 4, 6)

Question: is there a statistically significant difference between measured
x and measured y? I will use 90% confidence interval.

Result:

Give the command: t.test(x, y, conf=0.9)

The returned information:


Welch Two Sample t-test

data: x and y
t = -0.59894, df = 7.7117, p-value = 0.5664
alternative hypothesis: true difference in means is not equal to 0
90 percent confidence interval:
-6.179799 3.179799
sample estimates:
mean of x mean of y
2.833333 4.333333

Note the interval's lower bound is -6.17... and the upper bound is 3.17...

This includes 0. Consequently, I conclude that there's no statistically
valid difference between the two even though the means are different. If
the interval did not include 0, then I can conclude that there's a
statistically valid difference. The reason for this conclusion is the
large variability in the data (that's why we need a lot of data points and
we need tightly controlled test environments).

Hope this helps,

Bo




Bohdan L. Bodnar
Lead Performance Engineer
1-312-871-5163




E-mail: ***@us.ibm.com 222 South Riverside Plaza
Chicago, IL 60606
United States






From: Marek Czernek <***@redhat.com>
To: ***@jmeter.apache.org
Date: 08/31/2018 08:31 AM
Subject: Re: Best way to compare two results of jmeter



I saw the Grafana integration, but in my mind, any solution that
involves external DB seems unsuitable for my simple needs. I am testing
the Jenkins plugin, though I have been running into problems with
comparing two runs. I wonder:

1. Do you need to fire the JMX testplan using the plugin to be able to
compare results across builds with the performance plugin?
2. Do you need any Jenkins plugin other than the performance plugin for
cross-build comparison?

In the worst case, I'll implement a solution similar to what Bo
suggested, i.e. simply execute calculation on top of the CSVs. The
database solutions seem great if you need to really work with the data;
for my purposes, I mainly want to see whether there's a performance
difference from the previous build and I don't care that much about the
visual output.

Cheers,
--

Marek Czernek

JWS/JBCS Associate Quality Engineer, RHCA

Find me at www.halfastack.com

Post by Alexander Podelko
Just saw another solution in that area

https://dzone.com/articles/jmeter-elasticsearch-live-monitoring

Post by Alexander Podelko
On Thursday, August 30, 2018, 10:50:56 AM EDT, Alexander Podelko
Hi Marek,
I do use the Jenkins Performance Plugin for that purpose for some time,

I'd say that you get quite a lot for free straight out of the box. Pretty
decent. Another thing is that I haven't found practically any documentation
(although it is pretty straightforward for a simple use - and there is a
few posts how to setup it) and it is still not clear for me what to do if
I'd need something else from it....

Post by Alexander Podelko
Regards,Alex
Hi there,
is there any 'supported' way to compare the results of 2 jmeter runs? I
googled around and found an old email from 2004 [1] basically saying
that there is no recommended solution other than a custom-made analysis.
Have there been any solutions to this problem?
I can also see a Jenkins plugin [2] though I have no idea in what state
the plugin is, and as such, how viable it is to run it. Last but not
least, there's some Grafana integration blog [3].  Does anyone have any
other suggestions? How would you compare two results programmatically to
see if there is degraded performance?
[1]
[2]

https://wiki.jenkins.io/display/JENKINS/Performance+Plugin

Post by Alexander Podelko
[3]

http://www.testautomationguru.com/jmeter-real-time-results-influxdb-grafana/

Post by Alexander Podelko
Cheers,

[g***@live.com]

The easiest way to compare 2 JMeter runs is using Merge Results
<https://jmeter-plugins.org/wiki/MergeResults/> tool. You will be able to
specify prefixes for your test runs and get an aggregate chart which you can
use for comparison.

<Loading Image...>

Merge Results tool can be installed using JMeter Plugins Manager
<https://www.blazemeter.com/blog/how-install-jmeter-plugins-manager>







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