Monitors the level of memory fragmentation in the memory pool
The monitor indicates the level of memory fragmentation on this memory pool. This monitor has two possible states:
Healthy: The largest free memory buffer percentage is greater than the threshold.
Error: The largest free memory buffer percentage is below the threshold.
The following options can be configured on this monitor:
Option | Definition | Default |
Interval | Amount of time in seconds between checks of the device status | 240 seconds |
Number of retries | Number of attempts in each monitoring interval before the interval's sample is discarded | 3 |
Number of samples | Number of consecutive samples before the monitor changes state | 3 |
Timeout | Amount of time in milliseconds to wait for a response from the device before the sample times out and a new attempt is made to sample the value | 3,500 milliseconds |
Threshold | The largest free buffer percentage below which the memory is considered fragmented | 10 |
This monitor enters an error state when the system memory on this device is highly fragmented. The largest free memory buffer percentage is compared to the threshold (the default threshold is 10). The largest free memory buffer percentage is calculated by taking the largest contiguous memory buffer in the pool compared to the remaining free memory in the pool.
Use the Health Explorer to check the details for the state change on the State Change Events tab for the monitor. This data shows the largest free memory buffer percentage measured that caused the health state to change. Consult the device manufacturer's documentation for more information on the problem and troubleshooting procedures.
Target | System.NetworkManagement.A3Com_Performance_Memory | ||
Parent Monitor | System.NetworkManagement.Memory.MemoryException | ||
Category | PerformanceHealth | ||
Enabled | True | ||
Alert Generate | True | ||
Alert Severity | MatchMonitorHealth | ||
Alert Priority | Normal | ||
Alert Auto Resolve | True | ||
Monitor Type | System.NetworkManagement.ComputedExcessiveFragmentationMonitorType | ||
Remotable | True | ||
Accessibility | Public | ||
Alert Message |
| ||
RunAs | Default |
<UnitMonitor ID="System.NetworkManagement.A3Com.Memory.ExcessiveFragmentation" Accessibility="Public" Enabled="true" Target="NetworkLibrary!System.NetworkManagement.A3Com_Performance_Memory" ParentMonitorID="System.NetworkManagement.Memory.MemoryException" Remotable="true" Priority="Normal" TypeID="System.NetworkManagement.ComputedExcessiveFragmentationMonitorType" ConfirmDelivery="false">
<Category>PerformanceHealth</Category>
<AlertSettings AlertMessage="System.NetworkManagement.Generic.Memory.ExcessiveFragmentation.AlertMessage">
<AlertOnState>Error</AlertOnState>
<AutoResolve>true</AutoResolve>
<AlertPriority>Normal</AlertPriority>
<AlertSeverity>MatchMonitorHealth</AlertSeverity>
<AlertParameters>
<AlertParameter1>$Target/Host/Property[Type="System!System.Entity"]/DisplayName$</AlertParameter1>
<AlertParameter2>$Data/Context/Value$</AlertParameter2>
</AlertParameters>
</AlertSettings>
<OperationalStates>
<OperationalState ID="UnderThreshold" MonitorTypeStateID="MTSThresholdError" HealthState="Error"/>
<OperationalState ID="OverThreshold" MonitorTypeStateID="MTSThresholdSuccess" HealthState="Success"/>
</OperationalStates>
<Configuration>
<Interval>300</Interval>
<NoOfRetries>3</NoOfRetries>
<Timeout>3500</Timeout>
<LargestFreeBufferOID>.1.3.6.1.4.1.43.45.1.6.1.2.1.1.5.$Target/Property[Type="NetworkLibrary!System.NetworkManagement.LogicalDevice"]/Index$</LargestFreeBufferOID>
<FreeMemoryOID>.1.3.6.1.4.1.43.45.1.6.1.2.1.1.3.$Target/Property[Type="NetworkLibrary!System.NetworkManagement.LogicalDevice"]/Index$</FreeMemoryOID>
<ValidMemoryOID>.1.3.6.1.4.1.43.45.1.6.1.2.1.1.5.$Target/Property[Type="NetworkLibrary!System.NetworkManagement.LogicalDevice"]/Index$</ValidMemoryOID>
<ValidMemoryRegEx>.*</ValidMemoryRegEx>
<Threshold>10</Threshold>
<NumberOfSamples>3</NumberOfSamples>
<ObjectName>Memory</ObjectName>
<CounterName>Largest Free Buffer %</CounterName>
</Configuration>
</UnitMonitor>