PerformanceCounter 详解，使用方法

朱雀 2022-08-10 13:40 293阅读 0赞

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 Interface 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 Interface

.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

SMS[vc][]Host 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 \*\*\*\*\*\*\*\*\*\*");

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

\-----------------------------------

\*\*\*\* Instance Name \*\*\*\*\*\*\*\*\*\*

\_Total

\*\*\*\* Instance Name \*\*\*\*\*\*\*\*\*\*

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

\-----------------------------------

\*\*\*\* Instance Name \*\*\*\*\*\*\*\*\*\*

\_Total

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

\* counter name \*

% Processor Time

% User Time

% Privileged Time

Interrupts/sec

% DPC Time

% Interrupt Time

DPCs Queued/sec

DPC Rate

% Idle Time

% C1 Time

% C2 Time

% C3 Time

C1 Transitions/sec

C2 Transitions/sec

C3 Transitions/sec

\*\*\*\* Instance Name \*\*\*\*\*\*\*\*\*\*

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

\* counter name \*

% Processor Time

% User Time

% Privileged Time

Interrupts/sec

% DPC Time

% Interrupt Time

DPCs Queued/sec

DPC Rate

% Idle Time

% C1 Time

% C2 Time

% C3 Time

C1 Transitions/sec

C2 Transitions/sec

C3 Transitions/sec

\*\*\*\* Instance Name \*\*\*\*\*\*\*\*\*\*

\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*

\* counter name \*

% Processor Time

% User Time

% Privileged Time

Interrupts/sec

% DPC Time

% Interrupt Time

DPCs Queued/sec

DPC Rate

% Idle Time

% C1 Time

% C2 Time

% C3 Time

C1 Transitions/sec

C2 Transitions/sec

C3 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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PerformanceCounter pc1 = new PerformanceCounter("Processor","% Processor Time","\_Total");

然后通过pc1.NextValue() 获得相关计数器的值就可以了

[vc]: http://www.2cto.com/kf/ware/vc/
[Oracle]: http://www.2cto.com/database/Oracle/

PerformanceCounter 详解，使用方法

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