Event Log Messages; Memory Available; Page File Usage - NEC Express5800/320Ma User Manual

Event Log Messages

The Event Log instances detect when the Windows Event Log receives a System or
Application error or warning message. There is a separate instance for entries logged
as Warnings and entries logged as Errors. SAM can monitor the following:
•
Event Log: Application Error Messages
•
Event Log: Application Warning Messages
•
Event Log: System Error Messages
•
Event Log: System Warning Messages
Warnings and Errors report whatever the monitored source has been programmed to
report as warnings or errors to the Event Log. Event Log Warnings report problem
conditions. Event Log Errors report device or application failures.
This instance will not report the informational messages that monitored sources can
also generate.
The Event Log instances are on by default for Errors and off by default for Warnings.

Memory Available

Memory Available is the size in megabytes of the virtual memory currently available in
the system. This quantity combines the size of RAM plus the size of the system page
file; that is, physical RAM plus the swap file.
Running out of virtual memory can cause system instability or even application failures.
If the amount of memory regularly falls below a threshold amount, for example, 4 MB,
you may want to install more memory or increase the size of the paging file.
The Memory Available instance is on by default.

Page File Usage

Page File Usage is the percentage of the page file currently in use. A page file, also
known as virtual memory, is a file that the Windows Virtual Memory Manager (VMM)
creates on disk as an extension of physical memory space. This instance's default
setting generates a warning when a very high percentage of the page file is in use.
When this happens, the system is starting to run low on virtual memory.
When physical memory is full and a thread needs data that is not in physical memory,
VMM writes pages of its physical-memory contents to the disk and loads the needed
data from the disk into the freed area of physical memory. Reading and writing memory
to and from a page file is called paging, or swapping, in memory.
Configuring the Software Availability Manager
SAM Instances
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