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Posted on 5/30/2018 10:33:32 AM | | | |
The host application monitors the resources consumed by the AppDomain. Some hosts use this information to determine whether the memory or CPU consumption of an AppDomain exceeds the appropriate level, and force an AppDomain to be uninstalled.

You can also use monitoring to compare the resource consumption of different algorithms and determine which algorithm uses fewer resources. Since AppDomain monitoring inherently incurs overhead, the host must set the AppDomain's static property MonitoringEnabled to true to show open monitoring.Monitoring cannot be turned off once turned on; If you try to set MonitoringEnabled to false, an ArgumentException is thrown。



Once the monitoring is turned on, your code can query the following four read-only properties provided by the AppDomain class.

  • MonitoringSurvivedProcessMemorySize This Int64 static property returns the number of bytes used by all AppDomains controlled by the current CLR instance. This number is only guaranteed to be accurate when the last garbage collection was made.
  • The MonitoringTotalAllocatedMemorySize property of this Int64 instance returns the number of bytes allocated to a specific AppDomain. This number is only guaranteed to be accurate when the last garbage collection was made.
  • The MonitoringSurvivedMemorySize property of this Int64 instance returns the number of bytes currently in use by a particular AppDomain. This number is only guaranteed to be accurate when the last garbage collection was made.
  • MonitoringTotalProcessorTime is a TimeSpan instance property that returns the CPU usage of a specific AppDomain.

The following demonstrates how to use these three properties to check for changes in an AppDomain between two points in time:



The following demonstrates how to use the AppDomainMonitorDelta class







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