Published on: 2025-07-10 03:01:43
A while back my machine was so messed up that I could barely ssh onto it. 3,200% CPU utilization - all 32 cores on the host were fully utilized! Compare that to my last bug where it only used 1 core, 100% Fortunately, it was using Java 17 runtime which had thread dumps with CPU time! Sorting by CPU time brought a bunch of threads that looked similar to this: "Thread-0" #22 [14700] prio=5 os_prio=0 cpu=10359.38ms elapsed=11.49s tid=0x000001cdc35aaf60 nid=14700 runnable [0x00000047cfffe000] java
Keywords: base java reproduce thread treemap
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