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Virtual Processors and Threads

In This Chapter

Virtual Processors

Types of Virtual Processors

Advantages of Virtual Processors

Sharing Processing

Saving Memory and Resources

Processing in Parallel

Adding and Dropping Virtual Processors in Online Mode

Binding Virtual Processors to CPUs

How Virtual Processors Service Threads

Control Structures

Context Switching

Virtual-Processor Classes

CPU Virtual Processors

Determining the Number of CPU Virtual Processors Needed

Running on a Multiprocessor Computer

Running on a Single-Processor Computer

Adding and Dropping CPU Virtual Processors in Online Mode

Preventing Priority Aging

Using Processor Affinity

User-Defined Classes of Virtual Processors

Determining the Number of User-Defined Virtual Processors Needed

Using User-Defined Virtual Processors

Specifying a User-Defined Virtual Processor

Assigning a UDR to a User-Defined Virtual-Processor Class

Adding and Dropping User-Defined Virtual Processors in Online Mode

Java Virtual Processors

Disk I/O Virtual Processors

Logical-Log I/O

Physical-Log I/O

Asynchronous I/O

Network Virtual Processors

Specifying Network Connections

Running Poll Threads on CPU or Network Virtual Processors

Specifying the Number of Networking Virtual Processors

Specifying Listen and Poll Threads for the Client/Server Connection

Starting Multiple Listen Threads

Communications Support Module Virtual Processor

Encrypt Virtual Processors

Optical Virtual Processor

Audit Virtual Processor

Miscellaneous Virtual Processor

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