# Consistent 100% CPU use of safeCall-queue thread **URL:** \ **Category:** Runtime\ **Created:** [January 26, 2023, 1:02am UTC](https://community.openhab.org/t/consistent-100-cpu-use-of-safecall-queue-thread/143792 "2023-01-26T01:02:01Z")\ **Posts on this page:** 1\ **Showing post:** 44
**Author:** ![wborn](https://community.openhab.org/user_avatar/community.openhab.org/wborn/32/55946_2.png) [@wborn](https://community.openhab.org/u/wborn)\ **Post date:** [August 9, 2023, 5:19pm UTC](https://community.openhab.org/t/consistent-100-cpu-use-of-safecall-queue-thread/143792/44 "2023-08-09T17:19:56Z")
I made some bundles with patches to use the Java 11 `LinkedTransferQueue` on Java 17. This will only work with OH 4.0.1. Maybe someone wants to test it? You can update the bundles on the Console with these commands: ```auto bundle:install -s https://github.com/openhab/openhab-base-fixes/releases/download/base-fixes-20230809/base-fixes-1.0.0-SNAPSHOT.jar bundle:update org.openhab.core https://github.com/wborn/openhab-core/releases/download/base-fixes-20230809/org.openhab.core-4.0.1-SNAPSHOT.jar bundle:update org.jupnp https://github.com/wborn/jupnp/releases/download/base-fixes-20230809/org.jupnp-2.8.0-SNAPSHOT.jar ``` The org.jupnp update is optional as it may fail if you don’t use any add-on that depends on it. After updating the bundles openHAB needs to be restarted for it to work again. * * * To revert the changes use these commands: ```auto bundle:uninstall org.openhab.base-fixes bundle:update org.openhab.core https://openhab.jfrog.io/artifactory/libs-release/org/openhab/core/bundles/org.openhab.core/4.0.1/org.openhab.core-4.0.1.jar bundle:update org.jupnp https://repo1.maven.org/maven2/org/jupnp/org.jupnp/2.7.0/org.jupnp-2.7.0.jar ``` Then again restart openHAB. --- _[View the full topic](https://community.openhab.org/t/consistent-100-cpu-use-of-safecall-queue-thread/143792)._