+++ This bug was initially created as a clone of Bug #1299549 +++

Description of problem:
REST API calls are becoming significantly slower over time when Business Central is run on WebSphere.

Version-Release number of selected component (if applicable):
6.2.0 GA

Steps to Reproduce:
1. Run WasRestPerformanceTest from jBPM Integration test suite [1]
2. See how test duration time is raising.

Actual results:
The same process run many times is becoming slower and slower. Here are the times to run 100 processes (in ms):
9937
20448
23608
29905
45294
60033

Expected results:
The execution should always take almost the same amount of time.

Additional info:
This is reproducible using both direct REST calls and provided remote client classes. The issue affects only REST interface. When you run the same processes using SOAP or JMS, you will see that there is no performance degradation over time.

[1] https://gitlab.mw.lab.eng.bos.redhat.com/bxms/brms/blob/master/test-jbpm-integration/src/test/java/org/jboss/qa/bpms/jbpm/integration/remote/WasRestPerformanceTest.java

— Additional comment from Tomas Livora on 2016-02-11 05:48:39 EST —

This issue causes many problems when running tests from our test suite. The tests run 3-4 hours instead of 20 minutes on other containers. And there are also many failures caused by timeouts.