Process.NonpagedSystemMemorySize64 Property
Gets the amount of nonpaged system memory, in bytes, allocated for the associated process.
Assembly: System (in System.dll)
Property Value
Type: System.Int64The amount of system memory, in bytes, allocated for the associated process that cannot be written to the virtual memory paging file.
| Exception | Condition |
|---|---|
| PlatformNotSupportedException | The platform is Windows 98 or Windows Millennium Edition (Windows Me), which does not support this property. |
The value returned by this property represents the current size of nonpaged system memory used by the process, in bytes. System memory is the physical memory used by the operating system, and is divided into paged and nonpaged pools. Nonpaged memory allocations remain in system memory and are not paged out to the virtual memory paging file.
This property can be used to monitor memory usage on computers with 32-bit processors or 64-bit processors. The property value is equivalent to the Pool Nonpaged Bytes performance counter for the process.
This property is not supported on Windows 98 or Windows Millennium Edition (Windows Me).
The following code example starts an instance of the Notepad application. The example then retrieves and displays various properties of the associated process. The example detects when the process exits, and displays its exit code and peak memory statistics.
Imports System Imports System.Diagnostics Namespace ProcessSample Class ProcessMonitorSample Public Shared Sub Main() ' Define variables to track the peak ' memory usage of the process. Dim peakPagedMem As Long = 0 Dim peakWorkingSet As Long = 0 Dim peakVirtualMem As Long = 0 Dim myProcess As Process = Nothing Try ' Start the process. myProcess = Process.Start("NotePad.exe") ' Display process statistics until ' the user closes the program. Do If Not myProcess.HasExited Then ' Refresh the current process property values. myProcess.Refresh() Console.WriteLine() ' Display current process statistics. Console.WriteLine("{0} -", myProcess.ToString()) Console.WriteLine("-------------------------------------") Console.WriteLine(" physical memory usage: {0}", _ myProcess.WorkingSet64) Console.WriteLine(" base priority: {0}", _ myProcess.BasePriority) Console.WriteLine(" priority class: {0}", _ myProcess.PriorityClass) Console.WriteLine(" user processor time: {0}", _ myProcess.UserProcessorTime) Console.WriteLine(" privileged processor time: {0}", _ myProcess.PrivilegedProcessorTime) Console.WriteLine(" total processor time: {0}", _ myProcess.TotalProcessorTime) Console.WriteLine(" PagedSystemMemorySize64: {0}", _ myProcess.PagedSystemMemorySize64) Console.WriteLine(" PagedMemorySize64: {0}", _ myProcess.PagedMemorySize64) ' Update the values for the overall peak memory statistics. peakPagedMem = myProcess.PeakPagedMemorySize64 peakVirtualMem = myProcess.PeakVirtualMemorySize64 peakWorkingSet = myProcess.PeakWorkingSet64 If myProcess.Responding Then Console.WriteLine("Status = Running") Else Console.WriteLine("Status = Not Responding") End If End If Loop While Not myProcess.WaitForExit(1000) Console.WriteLine() Console.WriteLine("Process exit code: {0}", myProcess.ExitCode) ' Display peak memory statistics for the process. Console.WriteLine("Peak physical memory usage of the process: {0}", _ peakWorkingSet) Console.WriteLine("Peak paged memory usage of the process: {0}", _ peakPagedMem) Console.WriteLine("Peak virtual memory usage of the process: {0}", _ peakVirtualMem) Finally If Not myProcess Is Nothing Then myProcess.Close() End If End Try End Sub 'Main End Class End Namespace
for full trust for the immediate caller. This member cannot be used by partially trusted code.
Available since 2.0