This monitor checks the Available MBytes (Memory\% Available MBytes) for the system. If you receive an alert from this monitor, action may be required in order to bring the system back to an operational state.
The amount of available physical memory can become low under the following circumstances:
Too many applications/processes are running simultaneously on the computer.
An application may be leaking memory over time.
To address a low physical memory condition an administrator may choose one or more of the following options:
Stop or kill one or more applications, daemons, or processes. Run the "top" command or run the "Top 10 CPU Processes" task from the State View, which will provide a list of processes ordered by CPU usage. By default, the list will only display the top CPU consuming processes and their corresponding PID (Process ID). Utilizing the output from the "top" command, identify any offending or unnecessary processes along with its PID number. Issue a "kill" command utilizing the PID for the process. For example, if the PID number for the process is 4510, then issue the command 'kill 4510'. Verify that available memory has been increased by running the "Memory Information" task from the State View.
Add additional physical memory to the computer.
Move applications to one or more additional servers.
You can view available memory by running the "Memory Info" task from the State View.
VMStat provides detailed memory statistics averaged since the last reboot. You can run the VMStat Task from the State View.