> I notice Apache Artemis still uses ParallelGC by default. Where did you notice this? The JVM is configured to use G1GC on both Linux [1] and Windows [2]. We used to use ParallelGC, but that was changed via ARTEMIS-1047 [3] which was released in February 2021.
> Did anyone try Java 17 or 18 with ZGC already? I've not tried ZGC. Justin [1] https://github.com/apache/activemq-artemis/blob/main/artemis-cli/src/main/resources/org/apache/activemq/artemis/cli/commands/etc/artemis.profile#L40 [2] https://github.com/apache/activemq-artemis/blob/main/artemis-cli/src/main/resources/org/apache/activemq/artemis/cli/commands/etc/artemis.profile.cmd#L36 [3] https://issues.apache.org/jira/browse/ARTEMIS-1047 On Tue, Oct 4, 2022 at 8:08 AM Boer, W. de - CJIB/IT&BV <w.debo...@cjib.nl.invalid> wrote: > Hi, > > I notice Apache Artemis still uses ParallelGC by default. Did anyone try > Java 17 or 18 with ZGC already? > > We're using a symmetric cluster setup. Our nodes have 4 CPU's and 24GB > memory. With ParallelGC we're experiencing long stop the world pauses every > few weeks, resulting in an instable cluster (because of unnecessary > failovers/failbacks or even crashes). The situation improved with G1GC, > except for major garbage collections. ZGC looks promising with really short > pauses, but I'm uncertain whether this is tested and production ready with > Artemis 2.26.0? > > P.S. We're experiencing some strange behaviors with this setup. The > cluster is working well, but suddenly redistribution seems to fail on one > of the nodes resulting in missing messages. More on this in a separate > issue... > > Best Regards, > > Walter > > ********************************************************************** > > Disclaimer > > Dit bericht kan informatie bevatten die niet voor u is bestemd. > Indien u niet de geadresseerde bent of dit bericht abusievelijk aan u is > toegezonden, wordt u verzocht dat aan de afzender te melden en het bericht > te verwijderen. De Staat aanvaardt geen aansprakelijkheid voor schade, van > welke aard ook, die verband houdt met risico's verbonden aan het > elektronisch verzenden van berichten. > > This message may contain information that is not intended for you. > If you are not the addressee or if this message was sent to you by > mistake, you are requested to inform the sender and delete the message. The > State accepts no liability for damage of any kind resulting from the risks > inherent in the electronic transmission of messages. > > Ministerie van Justitie en Veiligheid. > ********************************************************************** > > . >
