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What are these Catalina-utility-X threads and why do they burn through so much heap? They consume 20x more memory than my worker thread, which I was trying to debug because I thought it was memory-intensive.

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This snapshot is taken on a tomcat instance on my Eclipse IDE, which is receiving zero http traffic - only doing the work on that worker thread (or so I thought).

Alex R
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  • Hi, did you find any info regarding this? I get session invalidation to a live session from Catalina-utility thread. I can't find info about this issue. Tomcat 9.0.39. – ReDevil Nov 22 '20 at 11:40
  • No, I didn't... – Alex R Nov 23 '20 at 00:03
  • you can visit https://stackoverflow.com/questions/68812689/tomcats-catalina-utility-threads-are-periodically-using-high-cpu-and-memory hope it will help you – Naraska17 Aug 27 '21 at 07:19

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