I have 1000 records in a csv file. I want to send all the records/data with packets of 50 records (all different) per minute in jmeter. Please guide me the Jmeter configuration for this.
flow-1-50 in 1 minute, then 50-100 in 2nd minute, then 100-150 in 3rd minute.....950-1000 in 20th minute
If you want to send 50 records per minute evenly distributed like 0.83 requests per second - go for Constant Throughput Timer
If you want to send 50 records in one shot then wait for 1 minute then send next 50 - go for Synchronizing Timer and Flow Control Action Sampler
Records from CSV can be retrieved using CSV Data Set Config
Related
I'm running a very simple JMeter test (screenshot attached) that hits 2 web pages. It's set to run for 6 hours but for some reason, the report is enormous. The last run came out at 41GB and as a result, I cannot generate the HTML report.
Any ideas as to why it's so big and what I can do about it?
Well, you're running a test with 100 users for 6 hours and each user creates a separate line for each page in the .jtl results file like this:
1657532286921,298,HTTP Request,200,OK,Thread Group 1-1,text,true,,1591,116,1,1,http://example.com/,295,0,163
so it's roughly 100 bytes per user per page
One iteration (100 users hitting 2 pages) would be 19 kilobytes
If response time of each page is 1 second each user will be able to execute 1800 requests per hour and 10800 requests per 6 hours. 100 users will execute 1080000 requests resulting in 108 gigabytes of results file.
There is nothing you can do about the results file size, you could increase JMeter's heap space so the file would fit into memory (if you don't have enough RAM you can use swap for this)
Alternative option is using Backend Listener to send the results to InfluxDB, in this case JMeter will send only aggregate data and the size will be lower, the results can be visualized in Grafana. More information: JMeter + Grafana: How to Use Grafana to Monitor JMeter
I am using CSV data set config for parameterization purpose in jmeter but I want the setting to be done as below:
The total number of threads are 20. There are 40 values in my CSV. I want all my threads to take first value during their first iteration and second value during second iteration. But JMeter is assigning unique value to all 20 users in the first iteration itself. Please help me how can I do this?
As far as I understand your requirement you need 20 threads to
Read lines from 1 to 20 during first iteration
Real lines from 21 to 40 during second iteration
In order to achieve this:
Add CSV Data Set Config to your Test Plan and configure it like:
Add Synchronizing Timer as a child of the associated request and configure it like:
That's it, this way you will get confidence that all 20 users will execute first 20 calls before proceeding to the next iteration:
Using ${path} in the 'Paths:' and providing the CSV file location in the 'Filename' under CSV Data Set Config, I am able to get a single user accessing the URL's one after the other from the CSV file.
But to complete my test, I want to get 1000 users access 1000 URL's concurrently to demonstrate the maximum load on a Database server. Please advice.
I am on Jmeter5.0
Define CSV Data Set Config with (default) Sharing mode All threads -
(the default) the file is shared between all the threads.
In same hierarchy of the sampler
Define in Thread Group Number of Threads: 1000
And execute test while each thread get different line/values from CSV
If you want to have "bursty load":
Set "Number of Threads" under your Thread Group to 1000
Add Synchronizing Timer as a child of your HTTP Request sampler and set "Number of Simultaneous Users to Group by" to 1000
So your test plan would look like:
It will execute 1000 requests at exactly the same moment and stop
If you want "prolonged load" - just let your Thread Group to iterate "Forever". You can limit test duration using "Scheduler" input:
It will execute requests with 1000 virtual users as fast as it can for 10 minutes
I have a use case where 10000 users are hitting the API sequentially.
first 1000 users/sec are hitting an API then they hold for 10-15 seconds and again another 2000 users are going to access the api.
Issue is i have an api <path>/user_id/${userId} and i have 10000 user ids stored in a .csv file
how fetch the file for every 1000 users at first set and 2000 users in the next?
I have added CSV Data set Config and i have the .csv file path
Below screenshot is my .csv set config.
Beanshell error
GetUserID API
Ashu
To pick first 1000 userIds for first 1000 threads and and next 2000 userids for next 2000 threads and so on follow this steps
Create a csv file with only userIds(Do not mention the column name in csv).
To the JMeter test plan add a simple thread group and bean shell sampler to the thread group.
Add the following code to the beanshell sampler
above code will add UserIds to JMeter properties.
now to pick userIds use
${__P(user_id_${__longSum(${__threadNum},-1,)})}
I have created a sample test plan to pick only first 10 values from csv for the first minute and pick next 10 for the next minute you can see the screenshot here
I would recommend run the tests in cloud.
Please follow this link to know more
My Jmeter script is taking all the values from CSV but when I see it in the HTTP request output, they are not been displayed sequentially. For e,g- 50th row in CSV does not correspond to 50th HTTP request.
Thank you!
This should be fine when you have more than 1 thread and all threads are sharing the same CSV file.
Each thread executes the test plan independently - but share the same csv file. these threads do not wait for each other. Ex: Thread 3 does not have to wait for thread 2 to pick the second row. It is like first come and first serve! Whichever thread is ready to pick the data - it gets the data from csv. Rest assured all the csv rows will be read sequentially ie..not random rows.