Hello, Below is my keycloak start parameters(domain): I use jmeter to do the performance test by invoke the get accesstoken . Concurrence 300 per second. 1st time I can see the QPS is around 1200 , but a few seconds later , it QPS is down to 600. Then I stop the test , and start the 2nd round test. I found the QPS is only 400 , and also the value is always going down. At last I saw the log out of memory error like below: Is there any solution on this ? Thanks & Best Regards Yann Chen _______________________________________________ keycloak-user mailing list keycloak-user(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/keycloak-user