Percentile function in Jmeter - performance

I know there is a built in function in Jmeter which will give you the responseTime of a sample request. But I wonder if there is something similar for getting different percentile values, like 95th, 99.99th etc, either in JSR223 or Beanshell sampler.
I know its possible to get the value in the HTML report but I want to know if you can get it from some built in method?
Thank you

There is no "built-in" methods, if you need this information in JMeter runtime you can configure JMeter to immediately write the interim results into the .jtl results file by setting the following JMeter property:
jmeter.save.saveservice.autoflush=true
Then you can read the .jtl file in Groovy and perform the calculation as per your requirements, something like:
def lines = new File('result.jtl').readLines()
def linesWithoutHeader = lines.subList(1, lines.size())
def elapsed = []
linesWithoutHeader.each { line ->
elapsed.add(line.split(',')[1] as long)
}
elapsed = elapsed.sort()
def index = Math.ceil(99 / 100.0 * elapsed.size()) as int
log.info('99 percentile: ' + elapsed.get(index - 1))
will give you the 99 percentile in the jmeter.log file.

Related

Increment time value for 2 fields for every Thread and loop in jmeter

I have to Schedule a Meeting, In the particular post request body data I have to give from and to time. Every time the From & To time hours be different and time should not overlap.
For this requirement I tried the below code using JSR223 Sampler, But the issue I'm facing here is that only one time gets incremented and for every thread and loop .The value is same and it is not incrementing. Every Thread the time value should be incremented. Please let me know how I achieve it , as below code is returning same value for each Thread
def now = new Date()
log.info('Before: ' + now.format('HH:mm'))
use(groovy.time.TimeCategory) {
def nowPlus60Mins = now + 60.minutes
def nowPlus15Mins = nowPlus60Mins + 15.minutes
log.info('After: ' + nowPlus60Mins.format('HH:mm'))
log.info('End: ' + nowPlus15Mins.format('HH:mm'))
vars.put("AfterTime",nowPlus60Mins.format('HH:mm'));
vars.put("EndTime",nowPlus15Mins.format('HH:mm'));
if you want to affect all thread you must use JMeter properties, represented in script as props:
props.put("AfterTime",nowPlus60Mins.format('HH:mm'));
props.put("EndTime",nowPlus15Mins.format('HH:mm'));
To get the property value outside JSR223 Sampler using __P function as ${__P(AfterTime,)}
In JSR223 get property with props.get("EndTime")
If you run more than 1 iteration in 1 minute - it's absolutely expected that you will get the same generated offsets because given your SimpleDateFormat setting the value will update every minute.
Also you don't need any scripting, you can achieve the same using __timeShift() function directly in your request body:
plus 60 minutes: ${__timeShift(HH:mm,,PT60M,,)}
plus 15 minutes: ${__timeShift(HH:mm,,PT15M,,)}
More information: Creating Dates in JMeter Using the TimeShift Function

${__time} function output is incorrect

I'm trying to get today's date using time function of jmeter with the format "${__time(yyyy-MM-dd)}" in BeanShell postprocessor. But after executing the Beanshell postprocessor the result shows as "1996". Basically the "time" function is displaying result by subtracting the values like "2018-03-19"=1996.
Please help me to resolve this issue so that i can get current date and time.
Beanshell code as below
import org.apache.jmeter.gui.GuiPackage;
import org.apache.commons.io.FilenameUtils;
String testPlanFile = GuiPackage.getInstance().getTestPlanFile();
String testPlanFileDir = FilenameUtils.getFullPathNoEndSeparator(testPlanFile);
vars.put("testPlanFileDir", testPlanFileDir);
//create the file in test plan file dir and print current time and Date
FileOutputStream f = new FileOutputStream(testPlanFileDir+"/CurrentDate.txt", true);
PrintStream p = new PrintStream(f);
this.interpreter.setOut(p);
//current date and time;
print("Current date is:"+${__time(yyyy-MM-dd)});
f.close();
Set time function call as parameter of your PreProcessor (by the way migrate to JSR223 + Groovy for performances)
And use it then with variable Parameters:
Try this with JSR223 PostProcessor and language Groovy and put this into script area:
def a = new Date().format('yyyy-MM-dd')
new File('Example.txt').withWriter('utf-8') {
writer -> writer.writeLine 'Current date is : ' + a.toString() }
(It works on JMeter 4.0)
You should move to JSR223 postprocessor according to JMeter Best Practices:
Since JMeter 3.1, we advise switching from BeanShell to JSR223 Test Elements
Until then you can fix it by quoting the function call as
print("Current date is:"+"${__time(yyyy-MM-dd)})";
This fix will treat the function's return value as string.
Currenty it treat it as a numeric substraction: 2018-3-19=1996 and then convert it to string
Performance anti-pattern #1: given you use GuiPackage class you won't be able to execute your test in non-GUI mode, consider migrating to FileServer instead
Performance anti-pattern #2: using Beanshell is not recommended as in case of high loads it might become the bottleneck. Since JMeter 3.1 it is recommended to use JSR223 Test Elements and Groovy language for any form of scripting
Performance anti-pattern #3: don't inline JMeter Variables or Functions in script body they break Groovy compiled scripts caching function and might resolve into something which will cause unexpected behaviour (like in your case), compilation failure or even data loss.
So:
Add JSR223 PostProcessor instead of the Beanshell one
Put the following code into "Script" area:
String testPlanDir = org.apache.jmeter.services.FileServer.getFileServer().getBaseDir()
File currentDate = new File(testPlanDir + File.separator + "CurrentDate.txt")
currentDate << new Date().format("yyyy-MM-dd")

How to get Maximum value from correlated IDs in Jmeter?

I have scenario where I need to capture dynamic Order-value IDs from response and among those values, I need to select maximum value and pass it to the next request.
How can we achieve this with the help of Jmeter tool?
Assuming you have the following JMeter Variables from the PostProcessor:
foo_1=1
foo_2=5
foo_3=10
foo_matchNr=3
You can get the maximum value as follows:
Add JSR223 PostProcessor as a child of the request, make sure it goes after the PostProcessor which returns your Order-ID values
Put the following code into "Script" area:
List values = new ArrayList()
for (int i=1; i <= (vars.get('foo_matchNr') as int); i++) {
values.add((vars.get('foo_' + i) as int))
}
vars.put('foo_max', Collections.max(values) as String)
Assuming everything goes well you should be able to access the maximum value as ${foo_max} where required.
See Apache Groovy - Why and How You Should Use It article for more information on Groovy scripting in JMeter tests

Jmeter: Comparison of multiple result for result response with JDBC variables

In j meter: In a bean-shell assertion or any other I want to match the content of response which I have fetched using Jason extractor suppose:
Result[1]=A, Result[2]=b, Result[3]=c
and so on Versus variables I have fetched using JDBC pre-processor which has saved as:
Result_1=, Result_2=B, Result_3=c.
I am able to match 1 variable at a time but not all at one time. so need help with bean-shell code to compare all result at once.
Add JSR223 Assertion somewhere to your test plan (normally as a child of a Sampler you would like to fail)
Put the following code into "Script" area
for (int i = 1; i <= Integer.parseInt(vars.get('ResultFromJSON_matchNr')); i++) {
if (!vars.get('ResultFromJSON' + i).equals(vars.get('ResultFromJDBC_' + i))) {
AssertionResult.setFailure(true)
AssertionResult.setFailureMessage('Variables mismatch')
}
}
Make sure you have groovy selected as the "Language" and have Cache compiled script if available box ticked
The above script assumes ResultFromJSON and ResultFromJDBC JMeter Variables reference names, amend them according to your real definitions.
More information: Scripting JMeter Assertions in Groovy - A Tutorial

read count of same response messages in thread group

I have thread group with single sampler.I have a scenario with 10 users to run for 1 hour duration. in view results tree showing different response data in every sampler's response data.can it possible to count how many times samplers get same response data.
{"success":false,"code":"104","message":"xx","status":412,"MessageType":"120","ResponseCode":"100","rilreplyDetails":"121"}
{"success":false,"code":"104","message":"yyy","status":412,"MessageType":"120","ResponseCode":"100","rilreplyDetails":"121"}
can I get a count of how many samplers get"xx" response,and how many for "yyy"?
One solution would be to define two variables in the Test Plan section, i.e: counter_xx and counter_yyy.
Then on the sampler request add one Regular Expression Extractor to extract the message value and finally use If Controller to specify which counter to increment.
The below image shows the structure for above solution.
Finally, you would be able to access the variable values by using ${counter_xx} or ${counter_yyy}.
The easiest would be doing this outside of JMeter, i.e. configure it to save response data by adding the next 2 lines to user.properties file:
jmeter.save.saveservice.output_format=xml
jmeter.save.saveservice.response_data=true
JMeter restart will be required to pick the properties up. Once your test is done inspect the resulting .jtl result file using your favorite XML editor.
See Configuring JMeter for more information on the approach.
Another option is using JSR223 Listener and the script like:
import org.apache.jmeter.engine.util.CompoundVariable
import org.apache.jmeter.functions.IterationCounter
def xxcounter = props.get("xxcounter")
if (xxcounter == null) {
xxcounter = new IterationCounter();
List<CompoundVariable> params = new ArrayList<>();
params.add(new CompoundVariable("false"));
xxcounter.setParameters(params);
}
def yycounter = props.get('yycounter')
if (yycounter == null) {
yycounter = new IterationCounter();
List<CompoundVariable> params = new ArrayList<>();
params.add(new CompoundVariable("false"));
yycounter.setParameters(params);
}
if (prev.getResponseDataAsString().contains('xx')) {
log.info('XX count: ' + xxcounter.execute(prev, sampler))
props.put('xxcounter', xxcounter)
}
if (prev.getResponseDataAsString().contains('yyy')) {
log.info('YYY count: ' + yycounter.execute(prev, sampler))
props.put('yycounter', yycounter)
}
The listener will scan current sampler response data and increment either this or that counter printing the current value to jmeter.log file.
Demo:
More information on Groovy scripting in JMeter: Apache Groovy - Why and How You Should Use It

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