What information do I need to investigate in case of high load, I/O or memory consumption in RHEL?

Solution Verified - Updated -


  • Sometimes server does not respond to commands.
    • Notice high CPU or i/o consume
    • Notice low memory free or high swap usage
    • Kernel Panic (by oom-killer)
  • What data should be collected if system is hung
    or observing performance issue?


  • Red Hat Enterprise Linux(RHEL) 4, 5, 6, 7, 8, 9

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