I am trying to build a Jmeter test plan that can make http calls to a server. Each thread in the thread group will read 2 parameters from a CSV file and make the http call with the params, and continue to make the same call with same parameters for lets say 1000 times with a delay of 10s between each thread execution.
The http call looks like
/service/method?param1=${param1}¶m2=${param2}
The CSV is like this:
1,2
3,4
5,6
7,8
I have the test plan set up that works for the most part except the single issue. I want each thread to use the same parameters (same line of input) whenever the thread executes. Currently the only way to do it is to set Recycle on EOF = true, but the threads randomly pick the values. Param1 and Param2 can be randomly generated values as long as they stick with the same thread throughout the execution.
Is there anyway I can achieve this?
Thanks!
I'm not really sure I understand your issue right (you can possibly describe it more explicitly or using an example) but the schema below should implement your test-plan description:
Test Plan
Thread Group
Number of Threads: N
. . .
While Controller
Condition: ${__javaScript("${param2"!="<EOF>",)} - read csv-file until the EOF
CSV Data Set Config
Filename: [path to your file with test-data]
Variable Names: param1,param2
Recycle on EOF? False
Stop thread on EOF? True
Sharing mode: Current thread group
Loop Controller
Loop Count = 1000 - number of loops for each thread, with the same params
HTTP Request - your http call
Test Action
Target = Current Thread
Action = Pause
Duration (ms) = 10000 - pause between calls
. . .
In case if you need that each of N threads reads and uses single and unique line from csv-file you have to set Sharing mode: Current thread group for CSV Data Set Config (number of csv-entries should be in this case the sane as threads number, or Recycle on EOF? False should be set otherwise).
In case if you need that each of N threads reads and uses all lines from csv-file you have to set Sharing mode: Current thread for CSV Data Set Config.
If that's not what you want please describe your issue a bit more clear.
I was able to find sort of a hack. Basically I just put a constant timer for each thread and used the thread number ${__threadNum} as the parameter to fit my constraint of having the same parameter to be used by the same thread.
I would still prefer a way to read the params from a csv file.
Related
I'm trying to get an increase in delay/pause and load over time in jmeter load testing while keeping the sequence constant. For example -
Initially - 10 samples (of 2 get requests - a,b,a,b,a,b...)
Then after 10 samples, a delay/pause of 10 secs and then 20 samples (a,b,a,b,a,b...)
After the 20 samples, another delay/pause of 20 secs; then 30 samples (a,b,a,b,a,b...)
And so on.
Constraints here being -
Getting exact number of samples
Getting the desired delay
The order of requests should be maintained
The critical section controller helps with maintaining the order of threads but only in a normal thread group. So if I try the ultimate thread group to get the desired variable delay and load, the order and number of samples go haywire.
I've tried the following-
Run test group consecutively
Flow control action
Throughput controller
Module controller
Interleave controller
Synchronizing timer (with and without flow control)
Add think times to children
Is there any way to get this output in jMeter? Or should I just opt for scripting?
Add User Defined Variables and set the following variables there:
samples=10
delay=10
Add Thread Group and specify the required number of threads and iterations
Add Loop Controller under the Thread Group and set "Loop Count" to ${samples}. Put your requests under the Loop Controller
Add JSR223 Sampler and put the following code into Script area:
def delay = vars.get('delay') as long
sleep(delay * 1000)
def new_delay = delay + 10
vars.put('delay', new_delay as String)
def samples = vars.get('samples') as int
def new_samples = samples + 10
vars.put('samples', new_samples as String)
I am using parallel processing.
CALL FUNCTION 'ZABC' STARTING NEW TASK taskname
DESTINATION IN GROUP srv_grp PERFORMING come_back ON END OF TASK
EXPORTING
...
EXCEPTIONS
...
.
I am calling this FM inside a loop. sometimes, my records are skipped. I am not getting a desired output. Sometimes 2000 records are processed and sometimes 1000. The numbers are varying. what can be the problem ? Can you provide me some cases where records can be skipped in parallel processing ?
See the example code SAP provides: https://help.sap.com/viewer/753088fc00704d0a80e7fbd6803c8adb/7.4.16/en-US/4892082ffeb35ed2e10000000a42189d.html
Look at how they handle the resource exceptions. A resource exception means that you tried to start a new aRFC but there were no more processes available. Your program has to handle these cases. Without handling these cases the entries will be skipped. The normal handling is to just wait a little time for some of the active processes to finish, in the example program:
WAIT UNTIL rcv_jobs >= snd_jobs
UP TO 5 SECONDS.
gv_semaphore = 0.
" your internal table size.
DESCRIBE TABLE lt_itab LINES lv_lines.
LOOP AT lt_itab INTO ls_itab.
" parallel proc. -->>
CALL FUNCTION 'ZABC' STARTING NEW TASK taskname
DESTINATION IN GROUP srv_grp PERFORMING come_back ON END OF TASK
EXPORTING
...
EXCEPTIONS
...
.
" <<--
ENDLOOP.
" wait until all parallel processes have terminated. **
WAIT UNTIL gv_semaphore = lv_lines.
NOTE: You should check total parallel process count. There should be some upper limits for opened threads.
Thanks.
I'm using Jmeter - it runs automatically every 4 hours (through crontab). I'm sending the results file (csv) in the mail at the end of the test. I always see the file of the previous test, not the current one (I can see by the hour).
the structure is this: one 'Test Plan' (I checked 'Run Thread Groups consecutively' and 'Run tearDown Thread Groups after shutdown of main threads), two 'Thread Groups' - which at the end of each I write results to csv file using 'View Results Tree', and at the end - 'TearDown Thread Group' that uses SMTP sampler to send the files created.
any help would be appreciated.
EDIT:
This is the SMTP sampler settings:
and this is the writing to the file:
This might be due to Autoflush policy which flushes content of buffer only when buffer is reached.
As you use a tear down thread group results are nit guaranteed to be fully written as test is not really finished.
The fact that you think you are sending previous test file might be due to jmeter appending data to the same results file.
So :
1/ ensure you move or delete the file once sent
2/ Edit user.properties and add:
jmeter.save.saveservice.autoflush=true
This will make jmeter write to file any sample result immediately afte it is executed.
I am trying to send an HTTP request via JMeter. I have created a thread group with a loop count of 25. I have a ramp up period of 120 and number of threads set to 30. Within the thread group, I have 20 HTTP Requests. I am a little confused as to how JMeter runs these requests. Do each of the 20 requests within a thread group run in a single thread, and each loop over a thread group runs concurrently on a different thread? Or do each of the 20 requests run in different threads as and when they are available.
My other question is, Over each loop, I want to vary the body of the post data that is being sent via the HTTP request. Is it possible to pass the post data body via a file instead of inserting the data into the JMeter Body Data Tab as show below:
However, instead of doing that, I want to define some kind of variable that picks a file based on iteration of the threadgroup that is running, for example, if it is looping over the thread group the second time, i want to call test2.txt, if the third time test3.txt etc and these text files will contain different post data. Could anyone tell me if this is possible with JMeter please and if so, how would I go about doing this.
Point 1 - JMeter concurrency
JMeter starts with 1 thread and spawns more threads as per ramp-up set. In your case (30 threads and 120 seconds ramp-up) another thread is being added each 4 seconds. Each thread executes 20 requests and if there is another loop - starts over, if there is no loop - the threads shuts down. To control load and concurrency JMeter provides 2 options:
Synchronizing Timer - pause all threads till specified threshold is reached and then release all of them at the same time
Constant Throughput Timer - to specify the load in requests per minute.
Point 2 - Send file instead of text
You can replace your request body with __fileToString function. If you want to parametrize it you can use nested function to provide current iteration - see below.
Point 3 - adding iteration as a parameter
JMeter provides 2 options on how you can increment a counter each loop
Counter config element - starts from specified value and gets incremented by specified value each time it's called.
__counter function - start from 1 and gets incremented by 1 each time it's being called. Can be "per-user" or "global"
See How to Use JMeter Functions post series for comprehensive information on above and more JMeter functions.
I am facing the following problem:
I have multiple HTTP Requests in my testplan.
I want every request to be repeated 4 times if they fail.
I realized that with a BeanShell Assertion, and its already working fine.
My problem is, that I don't want requests to be executed if a previous Request failed 5 times,
BUT I also dont want the thread to end.
I just want the current thread iteration to end,
so that the next iteration of the thread can start again with the 1st request (if the thread is meant to be repeated).
How do I realize that within the BeanShell Assertion?
Here is just a short extract of my code where i want the solution to have
badResponseCounter is being increased for every failed try of the request, this seems to work so far. Afterwards, the variable gets resetted.
if (badResponseCounter = 5) {
badResponseCounter = 0;
// Stop current iteration
}
I already checked the API, methods like setStopTest() or setStopThread() are given, but nothing for quitting the current iteration. I also need the preference "continue" in the thread group, as otherwise the entire test will stop after 1 single request failed.
Any ideas of how to do this?
In my opinion the easiest way is using following combination:
If Controller to check ${JMeterThread.last_sample_ok} and badResponseCounter variables
Test Action Sampler as a child of If Controller configured to "Go to next loop iteration"
Try this.
ctx.setRestartNextLoop(true);
if the thread number is 2, i tried to skip. I get the below result as i expected (it does not call b-2). It does not kill the thread either.