On rare occasions, it is possible to see RAM increase on firmware that is older than 6.4.0. In these cases, the best idea is to upgrade to a more stable and newer version to better troubleshoot or outright solve the issue.
Exinda Firmware versions older than v6.4.0, use less memory than newer firmware versions in general, but it is still possible to see a large climb of RAM usage when the device is under strain or if a malicious attack is passing through bridges on it. In some cases, memory leaks or other bugs might also cause this that have resolutions in future firmware versions.
Exinda firmware versions before 6.4.0 are very rarely seen in production use. As a result, bug reports and other information about the behaviour of the system is not as prevailant as newer versions. Known bugs that did exist in the system were fixed in later firmware versions. A combination of situations, whether known or unknown, could lead to a rapid increase of RAM, and when all available RAM is used up, it will cause the device to crash. This general behaviour still exists on newer Exinda firmware, with the exception that causes are more easily researched and some helping measures have already been put in place.
If experiencing rapid memory growth on Exinda systems running firmware prior to 6.4.0, follow the correct upgrade path
to get the Exinda running on version 6.4.7. Once the Exinda is on 6.4.7, monitor the system to see if the problem has ceased. If it still has not, contact Exinda TAC for assistance.