I am also experiencing this issue and have the following:
ArubaOS (MODEL: 205), Version 6.5.1.0-4.3.1.1
13 IAPs in the environment
High Memory Utilization (90%+ for over 2 weeks now)
Show Tech gives me the following Memory utilization data:
CPU and Memory Usage
--------------------
Timestamp CPU Util(%) Memory Util(%)
--------- ----------- --------------
2017-05-18 11:09:39 17 96
2017-05-18 11:09:29 10 96
2017-05-18 11:09:18 21 96
2017-05-18 11:09:06 16 94
2017-05-18 11:08:56 18 94
2017-05-18 11:08:45 12 94
2017-05-18 11:08:35 15 94
Peak CPU Util in the last one hour
----------------------------------
Timestamp CPU Util(%) Memory Util(%)
--------- ----------- --------------
2017-05-18 11:07:09 33 95
The master AP has between 3-8MB of Free Memory and all the other APs in the cluster have 30+MB free. I've rebooted the master to see if that alleviates any utilization problems.
I also noticed in the release notes for 6.5.1.0-4.3.1.2 that there's a datapath bug (154065) relating to the issue we're seeing. Should we still be seeing the high memory utilization on the VC though?
Thanks