The Memory Warning Threshold Exceeded or Memory Critical Threshold Exceeded alerts appear in Deep Security to alert you that a host's memory usage has exceeded a certain amount. A warning alert indicates that 70% of the host's memory is used, and a critical alert indicates that usage has exceeded 85%.
To resolve this issue, determine whether there are processes unexpectedly consuming a large amount of memory:
  • If the identified process is not Deep Security Manager, remove or eliminate the processes from the host. Deep Security Manager should run on a dedicated host computer.
  • If the process is Deep Security Manager, increase the amount of the host memory. Refer to Sizing for guidelines.
Note
Note
By default, the maximum heap size of Deep Security Manager is 4 GB. That means Deep Security Manager allocates a maximum 4 GB heap; however, the JVM allocates not only heap but also non-heap. Consequently, the maximum total memory size of the Deep Security Manager process will be larger than 4 GB.
Note
Note
If the host is a VM, we strongly suggest that you reserve all guest memory for the VM.