OK, that’s not after slave restart but after master restart. According to some findings, it may be related to [ARTEMIS-4985] (PriorityLinkedListImpl iterator issues). I was getting plenty of AMQ229027 and AMQ224049 on the slave, as well as NPE in MessageReferenceComparatorSequence.compare().
Jan Šmucr DevOps Engineer Mobile +420 737 186 293 aimtecglobal.com <https://hubs.la/H0JdDtt0> [ARTEMIS-4985] https://issues.apache.org/jira/browse/ARTEMIS-4985 Od: Jan Šmucr <[email protected]> Odesláno: úterý 24. února 2026 8:42 Komu: [email protected] Předmět: High CPU on slave after restart Hello. I’d like to ask if you’re aware of any issue *sometimes* causing high CPU usage on a freshly restarted slave (replication HA), version 2.36.0. I went through the release notes but none of the bugfixes (more specifically their titles) seem to have dealt with this. I did some profiling using the flight recorder and I couldn’t find anything. It’s on a production setup, so I thought I’d ask here first before trying to replicate it once again. Thanks. Jan Šmucr DevOps Engineer Integration Business Unit [cid:[email protected]] Aimtec U Prazdroje 2807/8, 301 00 Pilsen, Czech Republic Reception +420 377 225 215, Support +420 377 240 400 Mobile +420 737 186 293 aimtecglobal.com <https://hubs.la/H0JdDtt0> [cid:[email protected]]<https://www.facebook.com/aimtecCZ>[cid:[email protected]]<https://www.instagram.com/aimteclife/> [cid:[email protected]] <https://www.linkedin.com/company/aimtec-a-s-/> [cid:[email protected]] <https://www.youtube.com/channel/UCorq-8h-Q8WrTmQHo1gdD1Q> [cid:[email protected]]<https://hubs.la/Q03vLqWF0>
