Sam Instances - NEC Express5800/320Ma User Manual

SAM Instances

You can monitor and configure the following instances:
•
Context Switches (Per Second). The number of switches per second from one
thread to another. A context switch occurs when the processor stops processing
one thread and starts processing another. Context switches per second is a
measure of how the microkernel is distributing the CPU processing of threads and
processes on the system.
•
CPU Usage. The percentage of time that the processor is busy executing a non-idle
thread. CPU usage measures how much work the CPU is doing and which
processes are using the CPU's time. Sustained high CPU usage can degrade
system performance.
•
Disk Free Space. The ratio of the free disk space to total usable space, per each
logical disk on a system. The threshold values supplied for this instance apply to
each logical disk in the system. If any logical disk's free space falls below the
configured threshold, for instance, 5%, SAM would send email notification
(assuming you configured the instance to do so).
•
Event Log:
– Application Error Messages
– Application Warning Messages
– System Error Messages
– System Warning Messages
The Event Log instances detect when the Event Log receives a System or
Application error or warning message.
•
Memory Available. The size in megabytes (MB) of the virtual memory currently
available in the system. This quantity combines the size of RAM memory plus the
size of the system page file. Running out of virtual memory can cause system
instability or even application failures.
•
Page File Usage. The amount of page file currently in use. This can help determine
whether the page file is too small for your system.
Overview of the Software Availability Manager
Software Availability Manager
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