Not able to open Test plan on Jmeter version v3.1 which has been created on JMeter version v2.12 r1636949 . Please provide if there is any solution to this.
Take a look at jmeter.log file, it usually contains enough troubleshooting information so you will be able to figure out the cause of the problem.
I can see 3 reasons for this behavior:
You are using Test Element(s) which was(were) deprecated. If this is the case - check our Incompatible Changes section of JMeter release notes to learn what component(s) should be used instead
You are using JMeter Plugins which were installed on JMeter 2.12 and JMeter 3.1 instance does not have these plugins. In that case use JMeter Plugins Manager to re-install the missing plugins
You are using 3-rd party libraries in JUnit or Beanshell code. In that case copy them from JMeter 2.12 somewhere into Classpath of JMeter 3.1
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I just installed JMeter on a new computer. On this computer, I don't see JS, and it's saying engine not found. I couldn't find any specific answer to why it's not showing up. Is there something else I need to install?
Nashorn JavaScript Engine which was providing JavaScript language support for the JSR223 Test Elements has been removed from Java 15 and later so the options are in:
Downgrade to a previous JRE version where the Nashorn engine is still there, the minimum Java version for running latest JMeter 5.4.1 is Java 8
Consider using GraalVM runtime which comes with JavaScript support bundled
Consider migrating to Groovy as it's recommended scripting option since JMeter 3.1 and it has the best performance comparing to other scripting options in JMeter.
I am going to do some test research about APIs, and I choose JMeter as the tool. But I cant use JavaScript in JSR223 PreProcessor. I even dont have the options of JS at the ScriptLanguage drop-down menu. Please help me.
Nashorn engine which was providing JavaScript support has been removed recently, if you really need to use JavaScript in your JSR223 Test Elements you will either have to downgrade you Java to the version where Nashorn is still there (the lowest version JMeter can run on is OpenJDK 8
Alternatively you can use GraalVM which brings JavaScript support into the latest JDK versions
And last but not the least, since JMeter 3.1 it's recommended to use Groovy as the scripting language so it might be a good opportunity to consider migration to Groovy as it has much better performance comparing to JavaScript and other scripting options. More information: Apache Groovy - Why and How You Should Use It
In latest JMeter there are irrelevant plugins in Plugins Manager (start with jmeter - ) as jmeter - JDBC Support
It display JMeter components which are part of JMeter and can't be uninstalled,
Manager UI allow to uninstalled and if clicking Apply Changes and Restart JMeter it seems to have no real effect, but it's still very confusing.
It seems like a bug, but is it Plugin manager issue or JMeter? is there some purpose for displaying JMeter core features as plugins? can it be removed?
As feature is provided by plugins-manager, it is a plugins-manager issue.
I would suggest you report it on their forum.
The idea was to remove plugins (even core jmeter) that were not used.
As you know, Apache JMeter is built with Plugin Architecture in core, all protocols are plugins even core ones.
Just want to understand how can we integrated our selenium scripts using cucumber can be integrated in Jmeter?
or any other way we can add any Jmeter plugin to our selenium scripts or some extra configuration is required, so while running automation scripts the Jmeter report is also generated.
Cucumber has many faces so you need to be more specific regarding the programming language you used for your tests.
For example if it is Java and JUnit - you can easily integrate your tests via JUnit Request sampler by compiling your tests into a .jar file and dropping it to "lib/junit" folder of your JMeter installation. Of course you will need to have the necessary Selenium libraries in JMeter Classpath.
If your tests are in Ruby:
Download JRuby jar and drop it to lib folder of your JMeter installation
Install WebDriver Sampler plugin using JMeter Plugins Manager
Open JMeter and add WebDriver Sampler to your Test Plan
Select ruby from language dropdown and transfer your existing Ruby code into "script" area (i.e. copy and paste)
Be aware that real browser based performance tests are very resource consuming so consider converting your Selenium tests into "pure" JMeter tests instead of running them in multithreaded manner.
I have been running JMeter script for a couple of months. My JMeter GUI started freezing for the last couple of days, so I removed the old JMeter and installed it again. Now when I try to open my scripts I get this error (image below). The scripts that I am trying to open are recorded script. I am not able to understand the error message.
You need to install all missing plugins used by your script.
Either use Plugins Manager or old version :
https://jmeter-plugins.org/downloads/all/
Restart JMeter after that.
Most likely this is due to missing JSON Path Extractor plugin so you need to get it back. The easiest way to restore the plugin and keep it up-to-date is using JMeter Plugins Manager
Install JMeter Plugins Manager. Don't forget to restart JMeter after placing the Plugins Manager .jar file to JMeter's "lib/ext" folder
From JMeter's main menu select Options -> Plugins Manager
Switch to the Available tab
Locate JSON Plugins
Click Apply Changes and Restart JMeter button