% Swap Space Used System-wide (SWPTotSwapUsedPercent)
Description
This parameter displays the percentage of the total system-wide swap space in use. Once your system is out of swap space, it cannot start any new processes, and running processes cannot spawn new processes.
Default Action Taken by PATROL
PATROL annotates the parameter's value with a report that displays the top 10 highest CPU-using processes (the value of the Processes-Using-Most-CPU-Time-PROCTopProcs). Annotations are denoted by an asterisk (or user-specified symbol) in the graph.
Recommendations
If your system runs out of swap space regularly, you should add more swap space. Your only other alternative is to schedule or terminate jobs with large memory requirements. You should become very familiar with your system's work load and standard processes. Killing frivolous processes and scheduling jobs with large memory requirements to run during non-peak times may improve performance greatly.
The defaults (Warning at two consecutive hits in the 90% to 95% range and Alarm at two consecutive hits in the 95% to 100% range) are reasonable for a typical system. However, knowing the characteristics of your system and its work load will help you determine whether to change the defaults.
Default parameter attributes
Attribute | Default value |
|---|---|
Application class | SWAP |
Command type | not applicable |
Platform | all |
Icon style | gauge |
Unit | percentage |
Border range | 0-100 |
Alarm1 range | 95-95: warn |
Alarm2 range | 95-100: alarm |
Scheduling (poll time) | inherits poll time of collector |
Active at installation | no |
Parameter type | consumer |
Value set by | DCMColl controlled by SWAPCtrl |
BMC ProactiveNet Performance Management properties
Property | Default value |
|---|---|
Monitor type | Swap |
Key Performance Indicator | No |
Monitor for abnormalities | No |
Graph by default | No |
Availability | No |
Response time | No |
Normal distribution | Yes |
Statistical | Yes |