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Optimizing Oracle Performance
book

Optimizing Oracle Performance

by Cary Millsap, Jeff Holt
September 2003
Intermediate to advanced content levelIntermediate to advanced
416 pages
14h 1m
English
O'Reilly Media, Inc.
Content preview from Optimizing Oracle Performance

Appendix C. M/M/m Queueing Theory Formulas

Table D-1 provides a convenient summary of the M/M/m queueing theory formulas described in Chapter 9.

Table C-1. M/M/m queueing theory formulas

Definition

Formula

Average number of arrivals

A

Average number of completed requests

C

Measurement period

T

Average busy time

B

Number of parallel service channels

m

Average arrival rate

Average interarrival rate

Average system throughput

Average service time

Average service rate

Average total utilization

Average server utilization or load (m servers)

Probability that arriving request will be enqueued (ErlangC)

image with no caption

Average queueing delay

Average response time

Cumulative distribution function of response time ...

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Publisher Resources

ISBN: 059600527XSupplemental ContentErrata Page