It could be due to stuck VSH sessions. Are you using any scripts which login to ACE periodically for collecting some outputs?
Do you see it going above 60%. At that %age you should not see any session loss. Are you seeing any denied counters in sh resoource-usage?
This is a complicated process and TAC might need to go to debugshell for troubleshooting the problem. I would suggesting collecting show tech and syslogs during the high CPU usage and open a TAC case for further investigation.
It could be related to below DDTS: CSCua90111: ACE not clearing VSH process resulting in high CPU usage.
to-cp-ipcp-Limits represents the IPCP traffic from the DP(dataplane) to the CP(Control Plane) in
packets per second. This keyword prevents the overwhelming of the CP under high syslog
rate conditions (for example, level 7 messages).
This is an umbrella resource intended to prevent CP saturation so this should not impact
the traffic on ACE. One way to mitigate is to reduce the logging level on each context to
limit syslog messages coming from DP to CP.
So if you have a high logging level configured in contexts like logging level 7(debug) please reduce it to lower level like "Warning". High level logging is recommended when you are troubleshooting an issue and then you can turn it to lower level again.
Also, internal research threw up that DDTS but i would still suggest opening a TAC case for thorough investigation.
VMware Trunk Port Group is supported from ACI version 2.1
VMM integration must be configured properly
ASA device package must be uploaded to APIC
ASAv version must be compatible with ACI and device package version
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