topic Re: Timer start event slacking when multiplice processes are running in Alfresco Archive

Timer start event slacking when multiplice processes are running

robinho — Fri, 19 Feb 2016 14:40:21 GMT

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

Re: Timer start event slacking when multiplice processes are running

robinho — Sat, 20 Feb 2016 15:12:29 GMT

It has nothing to do with the memory, I noticed

Re: Timer start event slacking when multiplice processes are running

martin_grofcik — Mon, 22 Feb 2016 09:31:13 GMT

Hi,

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

Regards
Martin

Re: Timer start event slacking when multiplice processes are running

jbarrez — Wed, 24 Feb 2016 09:40:14 GMT

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.

Re: Timer start event slacking when multiplice processes are running

robinho — Fri, 26 Feb 2016 15:25:20 GMT

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>

Re: Timer start event slacking when multiplice processes are running

jbarrez — Tue, 01 Mar 2016 20:42:42 GMT

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?

Re: Timer start event slacking when multiplice processes are running

robinho — Wed, 02 Mar 2016 11:53:11 GMT

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)

Re: Timer start event slacking when multiplice processes are running

robinho — Thu, 03 Mar 2016 11:50:27 GMT

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

Re: Timer start event slacking when multiplice processes are running

jbarrez — Mon, 07 Mar 2016 11:15:32 GMT

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?

Re: Timer start event slacking when multiplice processes are running

robinho — Mon, 07 Mar 2016 15:50:54 GMT

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…

Re: Timer start event slacking when multiplice processes are running

jbarrez — Fri, 11 Mar 2016 08:27:44 GMT

There is a ProcessEngineConfigurationConfigurer to tweak the process engine config.

I looked at your message poller and that is using a timer start event … exactly as what I'm using (im not using an async task, but a regular start timer event).

But … I'm not sure what you are aiming at here … you make the threads sleep?