I had setup a distributed environment with one master and five slaves. When I am performing an operation of consuming an API service, I am unable to get results. In single machine environment getting expected result.
Will anyone please guide me or provide me some references so that I can proceed further.
Thanks in advance.
Considering that you are getting proper response in Summary Report or Aggregate report listeners (distributed environment), change the following settings in Master Jmeter.properties file:
Remote batching configuration
Change "#mode=Standard" to "mode=Standard"
Otherwise if you are not getting response in Summary Report or Aggregate report listeners as well, then make sure that both Master & Slaves are in same network subnet.
Hope this will work.
Related
Im running Jmeter test with one master machine and slave system. The issue is Im not getting the results from the slave system, even though I could see the test has started and finished in slave system.
I tried running another Jmeter test with a different script & same configuration and fortunately Im able to get the results from the slave system.
Im not able to understand why the first scenario is not working and where exactly is the issue. Kindly help me out.
From your screenshots I can only state that the test didn't produce a single SampleResult because it didn't execute any Sampler, the most common reasons are:
Your test is using CSV Data Set Config and you forgot to copy the CSV file on slave machines. JMeter master only transfers the .jmx test plan to slaves, everything else needs to be copied manually
Basically a subset of point 1: your test plan relies on a JMeter Plugin which is not present on the slaves. If this is the case - install the missing plugin(s) using the JMeter Plugins Manager
The exact failure reason can be found in jmeter.log file on master machine and jmeter-server.log files on slave machines.
AS we know Jmeter have 2 mode to run test plans: single and master-slave mode
in single mode Jmeter summary report listener will collect min, max, stddev, error%,etc data and write in a file..
but in master-slave mode, these information are record by master server, and I have checked the Jmeter summary report codes, I can't understand which extends, methods or which codes make Jmeter slave servers can communicate with master server to let master server record these data, same question in Simple Data Writer listener.
So, can anyone help on this question, thank you very much!
Jmeter's slave communicate with master thanks to Java RMI. For this reason you need to start RMI registry before test. Since version 2.3.1 you don't need to do it manually, Jmeter server wil, take care of this.
I am performing distributed testing using JMeter and getting collective result of all slaves on Master JMeter GUI.
Please let me know if it is possible to capture separate reports for each slave?
For example, I have configured 2 Slaves + 1 Master JMeter. On executing the test, I would like capture separate report of each slave.
Thanks!!
You can get per-slave results as follows:
Add a Listener or your choice to Test Plan
Specify Filename in "Write results to file" section and choose what you need to store via "Configure" button
Once test finishes you'll have to collect result files from slave machines
Be aware that:
By default not everything can be stored, i.e. response data is being removed form successful samples
Listeners have their cost. See Greedy Listeners - Memory Leeches of Performance Testing to get an idea regarding impact and why it is better to have them off during load test.
For your case, don't use distributed testing, just launch 1 separate JMeter per slave machine.
I am running Jmeter performance test in distributed mode (2 slaves + master). In my test script I have configured Summary
Report which should save some data to csv file.
This file location is configured with fixed name "reports/summary.csv" value.
When I connect successfully from master to both slaves, tests finish on slaves, but no data is returned to master directory "reports/summary.csv". When I was running setup with one slave and master, master was collecting this data. What could be the problem when I have 2 slaves? Name conflict maybe?
Actually this problem was related to "jmeter-server" process not being able to connect to master using RMI. This network issue caused my jmeter-server to hang for decade on second node, and this stopped master node jmeter process from finnishing and finalizing results in mentioned summary file.
After I got it working, important thing to know is if you use SummaryReport or AggregateReport jMeter component in your testplan in distributed env., master will take care of collecting data from each slave.
I was using non-GUI option to perform a distributed load testing with Jmeter from master server A (Linux) to slave server B (Linux). Here's what I did:
./jmeter -n -t xxx.jmx -l results.log -R xxx.xxx.xxx.xxx
By default, Jmeter will write the results file to the master server A. I'm wondering if there's a way to directly store the results file on remote server B.
Thanks in advance!
The idea is they are dumb slaves, possibly without even the means to store data locally. The methods are invoked on a remote processor (RMI) and run from there, but all other resources are kept at the client side.
You could set up a CI server like Jenkins to run jmeter clients in a distributed manner. That will allow you more control over how tests are distributed. I have a jenkins set up that runs jmeter client on a master, with distributed tests to remote (jmeter) slaves, which are also jenkins slaves, tied to jobs that control the workspaces. This means they are never used by jenkins, but jenkins can get results files out of the workspace, aggregate them, and produce graphs using jmeter plugins CMDrunner.
The other possibility is to prefix your sample results with the unique part of the IP address of the current slave. This will allow you to display them aggregated or separately in your results viewer, and potentially write scripts to separate the results out and store them back on the slave they came from.
You could also use samba or similar to share the remote slave drive, and store the results directly there from the master.
If you have only one slave, any of these would be easy to implement, but get more complex as you add more slaves.
Look at sample sender alternative implementations.
Read the concerned paragraph here:
http://jmeter.apache.org/usermanual/remote-test.html
Natively it works like this, an option is not to use distributed mode and run many jmeter instances in non gui mode.
Try jmeter user mailing list and if you don't get an answer maybe open a bugzilla enhancement request.
If you want to build distributed load testing system you can try use Jagger