PerformanceCounter 详解，使用方法

	 

	这两天写代码控制CPU的占用率，显示为一条直线或者曲线，显示为一条直线的时候用到了PerformanceCounter 这个类。

	 

	 

	 

	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 

	RAS Total 

	TCPv6 

	TCPv4 

	Paging File 

	SQLServer:Latches 

	IPsec AuthIP IPv4 

	MSDTC Bridge 4.0.0.0 

	IPsec AuthIP IPv6 

	.NET CLR Data 

	WF (System.Workflow) 4.0.0.0 

	Synchronization 

	Processor 

	Security Per-Process Statistics 

	MSDTC Bridge 3.0.0.0 

	Generic IKEv1, AuthIP, and IKEv2 

	Database ==> TableClasses 

	Event Tracing for Windows Session 

	ASP.NET v4.0.30319 

	.NET CLR Networking 

	Objects 

	Terminal Services 

	BITS Net Utilization 

	SQLServer:User Settable 

	.NET CLR Exceptions 

	IPsec IKEv2 IPv6 

	Process 

	IPsec IKEv2 IPv4 

	SQLServer:Broker Activation 

	WFPv6 

	SQLServer:Database Mirroring 

	Search Gatherer 

	Teredo Relay 

	IPv4 

	SQLServer:Cursor Manager Total 

	IPv6 

	Job Object Details 

	WFPv4 

	IPHTTPS Global 

	ICMP 

	Offline Files 

	SQLServer:Cursor Manager by Type 

	SQLAgent:JobSteps 

	PhysicalDisk 

	Search Indexer 

	Windows Workflow Foundation 

	Teredo Server 

	ServiceModelService 3.0.0.0 

	Processor Information 

	SQLServer:Replication Logreader 

	SQLServer:Transactions 

	ASP.NET Apps v4.0.30319 

	SQLServer:Broker TO Statistics 

	SQLServer:Deprecated Features 

	Per Processor Network Inte易做图ce Card Activity 

	Database 

	Browser 

	.NET CLR Remoting 

	Pacer Pipe 

	Event Tracing for Windows 

	.NET CLR LocksAndThreads 

	Job Object 

	Client Side Caching 

	.NET Data Provider for SqlServer 

	ASP.NET Applications 

	Terminal Services Session 

	SQLServer:Broker/DBM Transport 

	Network Inte易做图ce 

	.NET Memory Cache 4.0 

	SQLServer:General Statistics 

	SQLServer:Resource Pool Stats 

	SQLServer:Replication Merge 

	Security System-Wide Statistics 

	SQLServer:Backup Device 

	UDPv6 

	.NET CLR Security 

	Outlook 

	.NET CLR Jit 

	SQLServer:Workload Group Stats 

	WFP 

	ASP.NET State Service 

	SMSvcHost 4.0.0.0 

	SQLServer:Databases 

	SQLServer:Locks 

	Server Work Queues 

	ICMPv6 

	NBT Connection 

	.NET CLR Loading 

	Server 

	SQLAgent:Jobs 

	RAS Port 

	Per Processor Network Activity Cycles 

	SMSvcHost 3.0.0.0 

	ServiceModelEndpoint 3.0.0.0 

	.NET CLR Networking 4.0.0.0 

	ASP.NET 

	USB 

	SQLServer:Memory Manager 

	Cache 

	SQLServer:Replication Snapshot 

	System 

	Redirector 

	SQLServer:Wait Statistics 

	SQLAgent:Statistics 

	LogicalDisk 

	.NET Data Provider for Oracle 

	.NET CLR Interop 

	分布式事务处理协调器 

	WMI Objects 

	.NET CLR Memory 

	SQLServer:Access Methods 

	SQLServer:Buffer Partition 

	SQLServer:Buffer Manager 

	Database ==> Instances 

	ReadyBoost Cache 

	SQLServer:Plan Cache 

	SQLServer:Replication Agents 

	SQLServer:Exec Statistics 

	Teredo Client 

	Telephony 

	IPsec IKEv1 IPv6 

	Memory 

	SQLServer:SQL Errors 

	SQLServer:Replication Dist. 

	ServiceModelOperation 3.0.0.0 

	SQLServer:Buffer Node 

	IPsec IKEv1 IPv4 

	Search Gatherer Projects 

	IPsec Driver 

	SQLServer:Broker Statistics 

	SQLServer:SQL Statistics 

	SQLServer:CLR 

	SQLAgent:Alerts 

	UDPv4 

	SQLServer: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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	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 **********"); 

	               

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