Last Modified: Nov 22, 2018
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BIG-IP Install/Upgrade, vCMP
Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2
13.0.0, 12.1.1 HF2, 12.1.1 HF1, 12.1.1
Opened: Jul 22, 2016
Related AskF5 Article: K41494015
Incorrect process priority in vCMP guest results in low priority of the guest control-plane, which might cause high availability failover.
vCMP guests may experience control-plane issues (such as failures to send or receive network failover traffic in an HA-pair, causing a failover).
This occurs when the following conditions are met: * vCMP provisioned. * vCMP hypervisor (host) running 12.1.0 * vCMP guest with 2 or more cores deployed and running 11.5.0 or greater. * vCMP guest has HT-Split enabled (tmsh list sys db scheduler.splitplanes.ltm).
This release restores the process nice value of VCMP guest control-plane, so the vCMP guest no longer experiences potential frequent failovers.