Oracle Linux: How To Profile Linux Kernel for a Specific User Space Program with Ftrace
(Doc ID 2789699.1)
Last updated on JULY 14, 2021
Applies to:Linux OS - Version Oracle Linux 7.6 with Unbreakable Enterprise Kernel [4.14.35] and later
Sometimes it is needed to profile Linux Kernel to see why a very simple command like "cat /sys/<some file>" is very slow.
This note illustrates how to get this done with ftrace.
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