Identify Spiking Kernel Threads
Explore techniques to identify spiking kernel threads by loading core dumps in the crash utility. Understand how to check stack traces across CPUs, analyze CPU consumption, list running processes, and verify problematic threads through logs to diagnose infinite loops or hangs.
We’ve already seen how to identify spiking user threads. In this lesson, we’ll learn how to identify spiking kernel threads.
Loading the core dump
We’ll start by loading the core dump:
crash dump.202206251950 ../KSym/vmlinux-5.10.0-10-amd64
The above command will output the following to the terminal:
Checking stack traces
Since this is a manual dump, we check stack traces on all CPUs.
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