Re: [keycloak-user] Performance decrease after upgrade

Hi, I tried to reproduce the regression between 4.5.0 and 4.8.3 by running a simple OIDC login / refresh token / logout scenario, but I din't see any regression neither in single-node deployment or 2-node cluster deployment. I can see almost the same performance numbers in throughput and response times (within 3% difference). Is it possible that some of your configuration changed during the upgrade? For example data-source settings (connection pool size, etc.) or max. number of HTTP connections on the container's HTTP listener. You can check by running: `./jboss-cli.sh -c` from your KC installation and then: /subsystem=undertow/server=default-server/http-listener=default:read-resource --> attribute max-connections /subsystem=datasources/data-source=KeycloakDS:read-resource --> attributes min-pool-size, max-pool-size or others which could affect performance Perhaps some settings on the load-balancer if you have a clustered deployment? Some custom SPI implementations? One setting which has big performance impact is the number of hashing iterations. However I checked and the default setting is the same in both versions: 27500. Anyway, thanks for letting us know. We will be adding more test coverage into the performance testsuite in the near future so we'll try to keep this in mind. CC: Marek, Hynek - any ideas off the top of your head what could have changed between 4.5.0 and 4.8.3 which could have caused a regression in the mentioned endpoints? Regards, Tomas ----- Original Message -----