I would like to get future / past date in my Jmeter. I tried timeShift but it returns milliseconds by default, I would like to use it in seconds because my system does.
I have tried many ways but can not figure it out. Can you all show me how ? Or other methods ?
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Use __timeShift() and __jexl3() functions combination
with __timeShift() you will get the date in past/future in milliseconds since start of the Unix epoch
and with __jexl3() you can simply divide the resulting value by 1000 to get the value in seconds
Demo:
More information on JMeter Functions concept: Apache JMeter Functions - An Introduction
In your timeShift call, edit the 'time format' parameter to '/1000'. Something like ${__timeShift(/1000,,P2D,,)} (to get a shift of 2 days in seconds).
Related
I have been trying to figure out how to measure the amount of time it takes a thread (virtual user) in JMeter to fully complete. I'm not necessarily concerned with response times at the moment. The API that I'm attempting to load test works in an async fashion. I make a request to start a job, I'm given a job id then I use that job id to check the status of said job until it's complete. I'm interested in knowing how long it takes for each job to complete i.e. when the job starts (thread is created) and when the job is completed (thread is done working).
I've seen several people suggest using the Transaction Controller in similar situations but that, unless I'm misunderstanding, gives me the total response time for all the requests in the "transaction" which doesn't help me.
This is what I have setup so far in JMeter:
Which actually works great, I make the initial request to submit the job and extract the job id. In a while loop I check the status of the job using the extracted id every 10 seconds (Constant Timer) until the job is complete.
This is what the aggregate report looks like for 5 concurrent users, I can also make the labels be the same so that it's compacted further but none of this information tells me how long a thread took. From the number of samples I can surmise that half the threads took roughly 10 seconds to complete and the others I can multiply by 10 seconds (sleep timer) and get a rough estimate how long it took to complete but that would be difficult to do (or at least time intensive) for a couple hundred threads. I was really hoping JMeter had something out of the box that would give me this information in a nice report format.
I've also seen suggestions that the only way to get this type of information is to parse logs, was just wondering if anyone has solved a similar problem.
Your question contains the answer, just measure it
Add JSR223 Sampler to the beginning of your Thread Group and put the following code into "Script" area:
SampleResult.setIgnore()
vars.putObject('startTime', System.currentTimeMillis())
the first line tells JMeter to not to store the JSR223 sampler result (as I believe you don't need this) and the second line saves current timestamp into ${startTime} JMeter Variable
Add another JSR223 Sampler to the end of your Thread Group and use the following code there:
SampleResult.setIgnore()
def end = System.currentTimeMillis()
def start = vars.getObject('startTime')
log.info('Thread ' + (ctx.getThreadNum() + 1) + ' elapsed time: ' + (end - start))
here we get the current timestamp after the job ended and subtract it from the previous timestamp store in the first JSR223 Sampler. The delta is printed to jmeter.log file however you might rather want to store it into another JMeter Variable and expose it to the results via Sample Variables property so it would be added to .jtl results file
Demo:
See Top 8 JMeter Java Classes You Should Be Using with Groovy to learn more about what these SampleResult, vars, and ctx shorthands mean
I'm about a week into learning JMeter and I've run a few test scripts which generate a summary.csv which contains your standard ; Samples, Average, Median etc...
[My Question]
I was wondering if there was a way to add a threshold for the summary.csv so if Average time is higher than x amount of milliseconds, then the user will be informed that the specific result was slower than expected. (Maybe this can be displayed on the summary.csv, I'm not sure what my options are tbh on how to output this)
I am aware that we can use assertions (specifically duration assertion) through the test script but the issue I have with assertions is that it stops the test once an assertion fails, stopping it from generating a summary.csv
Thank you for any input/opinions you guys have :) It is much appreciated!
Have a great day and stay safe everyone!
They are there already and they're controllable by the following JMeter Properties:
jmeter.reportgenerator.apdex_satisfied_threshold
jmeter.reportgenerator.apdex_tolerated_threshold
there is also a property which can apply thresholds to specific samplers or Transaction Controllers: jmeter.reportgenerator.apdex_per_transaction
Just declare the properties with the values of your choice in the user.properties file and next time you generate the dashboard its APPDEX section will reflect the thresholds.
More information: JMeter HTML Reporting Dashboard - General Settings
In my jmeter script, I want to apply a logic where I take the time stamp of the first request and the second last request with the last request being logout. The difference in the time stamps when exceeds 3600 sec should trigger the logout transaction. I can take the time stamps using the jmeter _time function but not able to subtract it successfully. If I can get this done then I can put logout in an if controller and give the condition. Can anyone help please?
Check out __longSum() function which you can use to subtract 2 Unix timestamps
Define start as: ${__time(,start)} where required
Define end as: ${__time(,end)} where required
You can get the difference between end and start as ${__longSum(${start},-${end},)}
Demo:
More information: How to Use JMeter Functions
I am a new to jmeter but am aware with the basics to correlate and parameterize values and run scripts for multiple users.
But i am stuck on an issue of correlating the dynamic values found here
This link was helpful in a way but i was not able to correlate the contents.
Any insights would do, Thanks in advance
These 152153667366 and friends seem utterly like Unix Timestamps (time in milliseconds since 1st Jan 1970).
It means you don't need to "correlate" them, you need to "generate" them, check out JMeter's __time() function which returns current time in form of a Unix Timestamp
Just amend your HTTP Request Path to end with ?t=${__time(,)} and that would be it.
Demo:
Check out Apache JMeter Functions - An Introduction article to get familiarized with JMeter Functions concept.
I am capturing elapsed time in simple variable in Jmeter and the value is saved in milliseconds, but I need to convert that value into minutes? Is there any way to do this in JMeter?
Given your variable name is elapsed you can convert milliseconds to minutes by dividing its value by 1000 (convert from ms to seconds) followed by dividing by 60 (convert seconds to minutes) via i.e. __jexl3() function which allows executing arbitrary JEXL expressions like:
${__jexl3(${elapsed} / 1000 / 60,elapsed)}
The above function will convert the value from ${elapsed} variable to minutes and write it back into ${elapsed} variable.
Functions can be used anywhere in the script
Use Function Helper Dialog to simplify function development process
See How to Use JMeter Functions posts series for more information on using JMeter Functions.
Instead, you could probably just use some simple math:
Convert Milliseconds To Hours, Minutes, And Seconds