too many timers? Activiti speed break

[benpr]

Hello,

we have over 100.000 processes with activiti timers waiting 90 days (P90D).
In the last days our activiti performance was very bad. After stopping thousands of these waiting processes the performance is much better.

What can we do to stabilize our activiti installation without stopping processes?
Exists an option for optimizing the job engine for many timers?

Regards,

Ben

[jbarrez]

Yes, for such a number of process instances you need to tweak the job executor: give it a bigger threadpool to start with for example.
Eg when using the AsyncExecutor, it has various settings: https://github.com/Activiti/Activiti/blob/master/modules/activiti-engine/src/main/java/org/activiti/...

[benpr]

Exists a best practice guideline for this?
50000 Timer –> maxPoolSize=10, …
100000 Timer –> maxPoolSize=20, …
…
Or a tip which values are good?