爱华网由于对这个类还是很感兴趣的，在网上找了一些资料也不是很清楚。就自己研究了一下。
首先，PerformanceCounter 分为各个category, 每个category 对应不同类型的资源，一般有"Processor", "IPv6",什么的。。。下面有一个所有的类型的列表：
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Thread
RASTotal
TCPv6
TCPv4
PagingFile
SQLServer:Latches
IPsecAuthIPIPv4
MSDTCBridge4.0.0.0
IPsecAuthIPIPv6
.NETCLRData
WF(System.Workflow)4.0.0.0
Synchronization
Processor
SecurityPer-ProcessStatistics
MSDTCBridge3.0.0.0
GenericIKEv1,AuthIP,andIKEv2
Database==>TableClasses
EventTracingforWindowsSession
ASP.NETv4.0.30319
.NETCLRNetworking
Objects
TerminalServices
BITSNetUtilization
SQLServer:UserSettable
.NETCLRExceptions
IPsecIKEv2IPv6
Process
IPsecIKEv2IPv4
SQLServer:BrokerActivation
WFPv6
SQLServer:DatabaseMirroring
SearchGatherer
TeredoRelay
IPv4
SQLServer:CursorManagerTotal
IPv6
JobObjectDetails
WFPv4
IPHTTPSGlobal
ICMP
OfflineFiles
SQLServer:CursorManagerbyType
SQLAgent:JobSteps
PhysicalDisk
SearchIndexer
WindowsWorkflowFoundation
TeredoServer
ServiceModelService3.0.0.0
ProcessorInformation
SQLServer:ReplicationLogreader
SQLServer:Transactions
ASP.NETAppsv4.0.30319
SQLServer:BrokerTOStatistics
SQLServer:DeprecatedFeatures
PerProcessorNetworkInterfaceCardActivity
Database
Browser
.NETCLRRemoting
PacerPipe
EventTracingforWindows
.NETCLRLocksAndThreads
JobObject
ClientSideCaching
.NETDataProviderforSqlServer
ASP.NETApplications
TerminalServicesSession
SQLServer:Broker/DBMTransport
NetworkInterface
.NETMemoryCache4.0
SQLServer:GeneralStatistics
SQLServer:ResourcePoolStats
SQLServer:ReplicationMerge
SecuritySystem-WideStatistics
SQLServer:BackupDevice
UDPv6
.NETCLRSecurity
Outlook
.NETCLRJit
SQLServer:WorkloadGroupStats
WFP
ASP.NETStateService
SMSvcHost4.0.0.0
SQLServer:Databases
SQLServer:Locks
ServerWorkQueues
ICMPv6
NBTConnection
.NETCLRLoading
Server
SQLAgent:Jobs
RASPort
PerProcessorNetworkActivityCycles
SMSvcHost3.0.0.0
ServiceModelEndpoint3.0.0.0
.NETCLRNetworking4.0.0.0
ASP.NET
USB
SQLServer:MemoryManager
Cache
SQLServer:ReplicationSnapshot
System
Redirector
SQLServer:WaitStatistics
SQLAgent:Statistics
LogicalDisk
.NETDataProviderforOracle
.NETCLRInterop
分布式事务处理协调器
WMIObjects
.NETCLRMemory
SQLServer:AccessMethods
SQLServer:BufferPartition
SQLServer:BufferManager
Database==>Instances
ReadyBoostCache
SQLServer:PlanCache
SQLServer:ReplicationAgents
SQLServer:ExecStatistics
TeredoClient
Telephony
IPsecIKEv1IPv6
Memory
SQLServer:SQLErrors
SQLServer:ReplicationDist.
ServiceModelOperation3.0.0.0
SQLServer:BufferNode
IPsecIKEv1IPv4
SearchGathererProjects
IPsecDriver
SQLServer:BrokerStatistics
SQLServer:SQLStatistics
SQLServer:CLR
SQLAgent:Alerts
UDPv4
SQLServer:CatalogMetadata
ThreadRAS TotalTCPv6TCPv4Paging FileSQLServer:LatchesIPsec AuthIP IPv4MSDTC Bridge 4.0.0.0IPsec AuthIP IPv6.NET CLR DataWF (System.Workflow) 4.0.0.0SynchronizationProcessorSecurity Per-Process StatisticsMSDTC Bridge 3.0.0.0Generic IKEv1, AuthIP, and IKEv2Database ==> TableClassesEvent Tracing for Windows SessionASP.NET v4.0.30319.NET CLR NetworkingObjectsTerminal ServicesBITS Net UtilizationSQLServer:User Settable.NET CLR ExceptionsIPsec IKEv2 IPv6ProcessIPsec IKEv2 IPv4SQLServer:Broker ActivationWFPv6SQLServer:Database MirroringSearch GathererTeredo RelayIPv4SQLServer:Cursor Manager TotalIPv6Job Object DetailsWFPv4IPHTTPS GlobalICMPOffline FilesSQLServer:Cursor Manager by TypeSQLAgent:JobStepsPhysicalDiskSearch IndexerWindows Workflow FoundationTeredo ServerServiceModelService 3.0.0.0Processor InformationSQLServer:Replication LogreaderSQLServer:TransactionsASP.NET Apps v4.0.30319SQLServer:Broker TO StatisticsSQLServer:Deprecated FeaturesPer Processor Network Interface Card ActivityDatabaseBrowser.NET CLR RemotingPacer PipeEvent Tracing for Windows.NET CLR LocksAndThreadsJob ObjectClient Side Caching.NET Data Provider for SqlServerASP.NET ApplicationsTerminal Services SessionSQLServer:Broker/DBM TransportNetwork Interface.NET Memory Cache 4.0SQLServer:General StatisticsSQLServer:Resource Pool StatsSQLServer:Replication MergeSecurity System-Wide StatisticsSQLServer:Backup DeviceUDPv6.NET CLR SecurityOutlook.NET CLR JitSQLServer:Workload Group StatsWFPASP.NET State ServiceSMSvcHost 4.0.0.0SQLServer:DatabasesSQLServer:LocksServer Work QueuesICMPv6NBT Connection.NET CLR LoadingServerSQLAgent:JobsRAS PortPer Processor Network Activity CyclesSMSvcHost 3.0.0.0ServiceModelEndpoint 3.0.0.0.NET CLR Networking 4.0.0.0ASP.NETUSBSQLServer:Memory ManagerCacheSQLServer:Replication SnapshotSystemRedirectorSQLServer:Wait StatisticsSQLAgent:StatisticsLogicalDisk.NET Data Provider for Oracle.NET CLR Interop分布式事务处理协调器WMI Objects.NET CLR MemorySQLServer:Access MethodsSQLServer:Buffer PartitionSQLServer:Buffer ManagerDatabase ==> InstancesReadyBoost CacheSQLServer:Plan CacheSQLServer:Replication AgentsSQLServer:Exec StatisticsTeredo ClientTelephonyIPsec IKEv1 IPv6MemorySQLServer:SQL ErrorsSQLServer:Replication Dist.ServiceModelOperation 3.0.0.0SQLServer:Buffer NodeIPsec IKEv1 IPv4Search Gatherer ProjectsIPsec DriverSQLServer:Broker StatisticsSQLServer:SQL StatisticsSQLServer:CLRSQLAgent:AlertsUDPv4SQLServer:Catalog Metadata
然后，每个类型下面对应多个实例，例如通过如下代码获得Processor的实例：
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usingSystem;
usingSystem.Collections.Generic;
usingSystem.Linq;
usingSystem.Text;
usingSystem.Diagnostics;
namespacePerformanceCounterTest
{
classProgram
{
staticvoidMain(string[]args)
{
PerformanceCounterCategory[]pcc=PerformanceCounterCategory.GetCategories();
for(inti=0;i<pcc.Length;i++)
{
if(pcc[i].CategoryName=="Processor")
{
Console.WriteLine("-----------------------------------");
Console.WriteLine(pcc[i].CategoryName);
Console.WriteLine("-----------------------------------");
//Console.WriteLine(pcc[i].MachineName);
string[]instanceNames=pcc[i].GetInstanceNames();
for(intj=0;j<instanceNames.Length;j++)
{
Console.WriteLine("****InstanceName**********");
Console.WriteLine(instanceNames[j]);
//PerformanceCounter[]counters=pcc[i].GetCounters(instanceNames[j]);
//Console.WriteLine("**************************************************");
//Console.WriteLine("*countername*");
//for(intk=0;k<counters.Length;k++)
//{
//Console.WriteLine(counters[k].CounterName);
//}
}
}
}
}
}
}
using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Diagnostics;namespace PerformanceCounterTest{ class Program { static void Main(string[] args) { PerformanceCounterCategory[] pcc = PerformanceCounterCategory.GetCategories(); for (int i = 0; i < pcc.Length; i++) { if (pcc[i].CategoryName=="Processor") { Console.WriteLine("-----------------------------------"); Console.WriteLine(pcc[i].CategoryName); Console.WriteLine("-----------------------------------"); //Console.WriteLine(pcc[i].MachineName); string[] instanceNames = pcc[i].GetInstanceNames(); for (int j = 0; j < instanceNames.Length; j++) { Console.WriteLine("**** Instance Name **********"); Console.WriteLine(instanceNames[j]); //PerformanceCounter[] counters = pcc[i].GetCounters(instanceNames[j]); //Console.WriteLine("**************************************************"); //Console.WriteLine("* counter name * "); //for (int k = 0; k < counters.Length; k++) //{ // Console.WriteLine(counters[k].CounterName); //} } } } } }}
输出结果为：
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-----------------------------------
Processor
-----------------------------------
****InstanceName**********
_Total
****InstanceName**********
0
****InstanceName**********
1
请按任意键继续...
-----------------------------------Processor-----------------------------------**** Instance Name **********_Total**** Instance Name **********0**** Instance Name **********1请按任意键继续. . .
在每个实例中，又对应多个计数器，这样就需要选择你需要的计数器了。
获得的Processor类别的_Total 实例，看看这个实例都包含什么计数器，上面代码注释的部门包括计数器的输出，结果为：
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-----------------------------------
Processor
-----------------------------------
****InstanceName**********
_Total
**************************************************
*countername*
%ProcessorTime
%UserTime
%PrivilegedTime
Interrupts/sec
%DPCTime
%InterruptTime
DPCsQueued/sec
DPCRate
%IdleTime
%C1Time
%C2Time
%C3Time
C1Transitions/sec
C2Transitions/sec
C3Transitions/sec
****InstanceName**********
0
**************************************************
*countername*
%ProcessorTime
%UserTime
%PrivilegedTime
Interrupts/sec
%DPCTime
%InterruptTime
DPCsQueued/sec
DPCRate
%IdleTime
%C1Time
%C2Time
%C3Time
C1Transitions/sec
C2Transitions/sec
C3Transitions/sec
****InstanceName**********
1
**************************************************
*countername*
%ProcessorTime
%UserTime
%PrivilegedTime
Interrupts/sec
%DPCTime
%InterruptTime
DPCsQueued/sec
DPCRate
%IdleTime
%C1Time
%C2Time
%C3Time
C1Transitions/sec
C2Transitions/sec
C3Transitions/sec
请按任意键继续...
-----------------------------------Processor-----------------------------------**** Instance Name **********_Total*************************************************** counter name *% Processor Time% User Time% Privileged TimeInterrupts/sec% DPC Time% Interrupt TimeDPCs Queued/secDPC Rate% Idle Time% C1 Time% C2 Time% C3 TimeC1 Transitions/secC2 Transitions/secC3 Transitions/sec**** Instance Name **********0*************************************************** counter name *% Processor Time% User Time% Privileged TimeInterrupts/sec% DPC Time% Interrupt TimeDPCs Queued/secDPC Rate% Idle Time% C1 Time% C2 Time% C3 TimeC1 Transitions/secC2 Transitions/secC3 Transitions/sec**** Instance Name **********1*************************************************** counter name *% Processor Time% User Time% Privileged TimeInterrupts/sec% DPC Time% Interrupt TimeDPCs Queued/secDPC Rate% Idle Time% C1 Time% C2 Time% C3 TimeC1 Transitions/secC2 Transitions/secC3 Transitions/sec请按任意键继续. . .
这样，在使用 PerformanceCounter 的时候需要指定类别，实例名，计数器名。
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PerformanceCounterpc1=newPerformanceCounter("Processor","%ProcessorTime","_Total");
PerformanceCounter pc1 = new PerformanceCounter("Processor","% Processor Time","_Total");
