Oracle-audio-technologies A86828-01 Manual do Utilizador descarregar pdf (Página 16)

What is Performance Tuning?

1-4 Oracle HTTP Server powered by Apache Performance Guide

In parallel processing with multiple resources, more resources are available to the

tasks. Each independent task executes immediately using its own resource: no wait

time is involved.

System Throughput

System throughput is the amount of work accomplished in a given amount of time.

You can increase throughput by:

■ Reducing service time

■ Reducing overall response time by increasing the amount of scarce resources

available. For example, if the system is CPU bound, and you can add more

CPUs.

Wait Time

While the service time for a task may stay the same, wait time will lengthen with

increased contention. If many users are waiting for a service that takes one second,

the tenth user must wait 9 seconds. Figure 1–2 shows the relationship between wait

time and resource contention.

Figure 1–2 Wait time rising with increased contention for a resource

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