I started with tests in general and with JMeter in particular. I would like to schedule the launch of my scenarios every five minutes.
There is a startup configuration tab in my group of units, in which I can set the date and time.
However, whenever I try to set the date and time, those settings always get overridden with another date. Any guidance would be appreciated.
To Schedule JMeter Scripts you can use crontab for linux and for windows you can use at.exe.
Related
I want to run a load test on my server. I have built couple of different test plans and I need to execute all the test plans at the same time.
I'm using a few instances of JMeter on three different machines and I'm trying to figure out whether I can schedule my JMeter scripts to be started at a certain time?
One way would be to run, on each of my machines, a script in which I run my JMeter test plans at a certain time
The reason I decided to not use JMeter in master/slave mode is that each of my test plans would generate a load from different parts of my application. So I need each of my JMeter instances to run a different Thread Group.
If you don't want to install software as Jenkins
You can schedule jmeter execution in exact time using crontab, example:
Schedule a cron to execute at 2am daily.
This will be useful for scheduling database backup on a daily basis.
0 2 * * * /bin/sh backup.sh
Depending on your operating system:
Windows: Task Scheduler
Linux: crontab
MacOS: launchd
You can also consider installing a CI/CD solution like Jenkins, BuiltBot or CruiseControl which provide VCS system integration as well as possibility to schedule builds at the specific time or run basing on various triggers.
a solution to my question is to use "at" command which allows us to schedule a job at a certain time. Since I needed my test script to be executed only once, I decided to take this approach.
For example, following command would schedule a task at 12:01 PM (you need to make sure that your user is assigned all the required permissions to run this job)
echo "JMETER_HOME/jmeter -n -t MT_TEST_PLAN.jmx -l MY_TEST_RESULT.jtl" | at 12:01 PM
Although, I do not support the usage of Jmeter GUI for executing load tests, it depends with how many users you are executing. If the user load is small, you can use Start Time/End Time in the Threadgroup.
If you are using windows machines to execute load test, you can use windows task scheduler to run load tests at some specific time.
I've started using Jmeter to run daily performance tests, and have also just figured out how to produce an HTML dashboard.
What I need to do now is find a way to run Jmeter every day, producing an HMTL dashboard of the results, but with comparisons of the results of the last few days. This would mean adding to the data of existing files instead of creating a new HTML dashboard every day.
Can anyone help me with this?
The easiest solution is adding your JMeter test under Jenkins control.
Jenkins provides:
Flexible mechanism of scheduling a job
There is a Performance Plugin for Jenkins which automatically analyses current and previous builds and displays performance trend chart on JMeter Dashboard
Alternatively you can schedule JMeter runs using i.e. Windows Task Scheduler and compare the current run with the previous one using Merge Results plugin
I want to compare 2 different jmeter runs.
I have a jenkins job to do that which triggers jmx which in turn call Rest APIs.
Lets say, I executed Jmeter run for one time. I will refer this as run 1
Now, after 30 minutes, I will again run the same jenkins job and will again run the jmeter test. I will refer to it as run 2.
So, now i have 2 runs and i want to compare run1 and run2, specifically the response time.
How can I automate that so that everytime this happens, i can have the difference in response time of APIs ?
I tried searching, found few articles (Compare results from a previous test in jmeter) but it did not really help :(
Please let me know how can this be achieved ?
You can use MergeResults plugin in order to compare 2 test executions and plot execution chart and/or have differences in the CSV file.
If you want to run it in non-GUI mode from Jenkins job - go for JMeterPluginsCMD Command Line Tool which has MergeResults plugin to run it in command-line mode.
You can install both the plugins using JMeter Plugins Manager
I'm having problem with jmeter while running the test plan. Suddenly my Jmeter starts hanging and appears as a black screen in GUI mode. I was running recording controller with multiple thread groups (4 thread groups). Each thread group with 25 users.
I'm using Jmeter 2.11 (current version). I'm not sure whether it is due to overload or some other reason.
Regards
Nayasoft
Don't ever use GUI mode for load test. Run JMeter in command-line non-GUI mode as follows
jmeter -n -t /path/to/your/testplan.jmx -l /path/to/testresults.jtl
Also if you have any listeners in your test plan - disable or remove them as well. After test execution you should be able to open testresults.jtl file with the listener of your choice and analyze results, but don't use them during load test.
Make sure that you following Performance Checklist and other recommendations from JMeter Performance and Tuning Tips guide
You have run out of JMeter/JVM memory. You can increase in with environment variables, command line options when you start jmeter, or change some values in jmeter.properties
This page describes how to start jmeter with more memory.
http://jmeter.apache.org/usermanual/get-started.html
One easy way is to set the environment variable before running jmeter:
set JVM_ARGS="-Xms1024m -Xmx1024m"
This will allow your tests to run longer before running out of memory, but if you store results in memory (for instance using View Results Tree listener), you will still run out eventually. For long running tests, or accurate measurement of short running tests, it is better to run in non-GUI mode, and save results to file, instead of memory.
Graphs can still be generated after the run from the saved results using jmeter utilities.
I am trying to load test my app by setting the Start and end time in Scheduler as a variables eg:
Start Time : ${START_TIME}
End Time : ${END_TIME}
bit Jmeter is not allowing to save it.Is it not a configurable option ?
This is what I want to do
jmeter -Jduration=600 -n -t /path/to/your/test/plan.jmx
This will kick of the tests immediately for 10 mins (600s)
Can the start time be configured in such a way that it is always a current time
You can configure it but it has to be a valid Date
If you want to control duration of your test I would recommend the following:
Test Start Time can be set by OS means (cron jobs, scheduled tasks, continuous integration system build plan, etc.)
Test Duration can be set via JMeter Property.
For instance, you want your test to run for 2 hours. In order to achieve this you need to provide the value of "7200" into "Duration" section of thread group. If you put ${__property(duration,,)} or ${__P(duration,)} into "Duration" input of thread group and set this duration=7200 property in i.e. user.properties or jmeter.properties files (they both live under /bin folder of your JMeter installation) or provide it as a command-line argument as
jmeter -Jduration=7200 -n -t /path/to/your/test/plan.jmx -l /path/to/results/file.jtl
The test will run for 2 hours (plus some additional time to gracefully shut down all the test threads).
See Apache JMeter Properties Customization Guide for more details on JMeter Properties use cases.