Timer start event slacking when multiplice processes are running

[robinho]

I have a timer startevent that starts a service task every 10 seconds.
the service task launches another independent asynchronous process that takes 2-3 days to finish.
Well, this works fine for the first 3-4 minutes.. after that, the timer startevent begins to launch itself approx 1-2 minute  instead of every 10 seconds..

What is the reason behind this? How can I fix this?

My activiti monitoring:
Memory usage:
1602MB / 1022MB used
Heap:
685MB / 1023MB used

[robinho]

It has nothing to do with the memory, I noticed

[martin_grofcik]

Hi,

Could you provide jUnit test for this issue?
https://forums.activiti.org/content/sticky-how-write-unit-test

Regards
Martin

[jbarrez]

Which version? There used to be a version in the past where this indeed could happen.

Also, as Martin says, a unit test would help a lot here.

[robinho]

After the launch of the first 2 asynchronous processes, the timer slacks to a 1-2minute interval instead of 15seconds.
I'm using the latest actviti enterprise version

The process is really easy. TimerStartevent (15sec interval)=>servicetask(that launches another asynchronous process) => end event

I tried the following code in my servicetask, but without success:

<code>
ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
  processEngine.getProcessEngineConfiguration().setAsyncExecutorActivate(true);
        processEngine.getProcessEngineConfiguration().setAsyncExecutorEnabled(true);
        AsyncExecutor asyncExecutor =  processEngine.getProcessEngineConfiguration().getAsyncExecutor();
        asyncExecutor.setMaxAsyncJobsDuePerAcquisition(100);
        asyncExecutor.setMaxTimerJobsPerAcquisition(1000);
        asyncExecutor.setDefaultAsyncJobAcquireWaitTimeInMillis(2000);
        asyncExecutor.setDefaultTimerJobAcquireWaitTimeInMillis(2000);
        asyncExecutor.setRetryWaitTimeInMillis(2000);
        processEngine.getProcessEngineConfiguration().setAsyncExecutor(asyncExecutor);
   RuntimeService runtimeService = processEngine.getRuntimeService();
  </code>

[jbarrez]

Hmm, that should just work … which version of Activiti are you using? Can you post your xml so we can verify it with the same process definition as you're seeing the problem with?

[robinho]

I'm using Alfresco Activiti Enterprise BPM Suitemaven 1.4.1

I posted my xml
Thank you for taking a look!

Info: MessagePoller should start an asynchronous TTSProcess every 15 seconds (this works for the first 2 asynchronous processes) After that, timer interval slacks to 1-2 minutes (the messagePoller process is taking quite a long time to finish)

[robinho]

I redesigned the 2 processes into 1 (which maybe a better option, or a even a solution).
Unfortunatly, the exact same problem is occuring..

See attachment.
Thanks

[jbarrez]

I've tried reproducing it here with a start timer event with R/PT15S, that goes to a script task that prints out a message …

but for me it nicely prints it out every 15 seconds:

Mon Mar 07 12:10:41 CET 2016 Hello world!
Mon Mar 07 12:10:56 CET 2016 Hello world!
Mon Mar 07 12:11:11 CET 2016 Hello world!
Mon Mar 07 12:11:26 CET 2016 Hello world!
Mon Mar 07 12:11:41 CET 2016 Hello world!
Mon Mar 07 12:11:56 CET 2016 Hello world!
Mon Mar 07 12:12:11 CET 2016 Hello world!
Mon Mar 07 12:12:26 CET 2016 Hello world!


I've attached my simple test (rename to .zip). Could you give it a spin on your env and post back what you see?

[robinho]

You made a synchronous task. I am talking about an asynchronous task. I used your example, made it asynchronous, created a thread.sleep on the service task.

I cannot find in the activiti documentation how to increase the async jobs, at the moment it is set at 2.
So the timer starts 2 processes waits until the sleep on the servicetask is done, and then starts another 2.
What is the common way to increase async jobs in alfresco activiti enterprise?

I tried
<code>
ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
  processEngine.getProcessEngineConfiguration().setAsyncExecutorActivate(true);
        processEngine.getProcessEngineConfiguration().setAsyncExecutorEnabled(true);
        AsyncExecutor asyncExecutor =  processEngine.getProcessEngineConfiguration().getAsyncExecutor();
        asyncExecutor.setMaxAsyncJobsDuePerAcquisition(100);
        asyncExecutor.setMaxTimerJobsPerAcquisition(1000);
        asyncExecutor.setDefaultAsyncJobAcquireWaitTimeInMillis(2000);
        asyncExecutor.setDefaultTimerJobAcquireWaitTimeInMillis(2000);
        asyncExecutor.setRetryWaitTimeInMillis(2000);
        processEngine.getProcessEngineConfiguration().setAsyncExecutor(asyncExecutor);
</code>

Not working…