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Cisco Bug: CSCvt15348 - ASA show processes cpu-usage output is misleading on multi-core platforms

Last Modified

Apr 13, 2020

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases

9.12(3.2) 9.6(4.8)

Description (partial)

The per-process CPU utilization displayed by the "show processes cpu-usage" command is incorrect on ASA on multi-core platforms.

This is a day-1 issue. Changes made in 9.6 software made things worse, because control plane processes run on few fixed CPU cores in 9.6 and newer versions, but software assumes they run on all available CPU cores. So, the displayed per-process CPU utilization can be many times lower than the real one.
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