High Dataplane memory warnings

[ethutchinson]

We have two FTD 1140ns running 7.6.2.1 (HA) managed by a FMCv running 7.6.2. We have been getting high data plane errors (82 and 83%) respectively on both. I have tried disabling SNMP and making sure I only have one Secure Connect client image loaded and the usage continues to go up. Cisco TAC has me collecting memory stats for them. 

Can anyone give me some ideas?

[Ben Weber]

This is going to be difficult to troubleshoot without understanding the configuration on the FTDs. A few things to consider:

How many policies have you configured? How are they set up? Does most traffic have to be processed through the entire policy database before it is allowed out to the Internet?

Worth checking out this bug: Cisco Bug: CSCwi20848 - ASA/FTD high memory usage due to SNMP caused by RAVPN OID polling

Otherwise, run some show commands to see what is chewing up your memory. See: https://www.cisco.com/c/en/us/td/docs/security/asa/asa-cli-reference/show_asp_drop_command_usage/show-asp-drop-command-usage.html