The Operational Laws

What is Performance?

Little's Law and Buzen's Operational Laws

A Fly in the Ointment: Dynamic response time

Back of the Envelope Exercise ( paper and pencil, calculator or spreadsheet)

Summary of Performance Metrics

Utilization

What is utilization?

Utilization is a Statistic

Utilization is not "Normal"

Key Allies Revisited

Consolidation and Distribution

Review of Random Variables

Consolidation and Distribution

Utilization Time Series Distribution

Projecting short term c

Measurement Intervals

A Consolidation Study

Analysis of Distributed Loads

Building the Consolidation

Analysis of the Consolidated Load

Transition to Nest Intense Load

Scaling

Capacity and Saturation Duality

Scaling Examples

Now it gets to be fun

Negative Kappa (IBM z15)

M=2 Software Example

Transient Behavior

Transient Behavior

Transient behavior Exercise

Tandem Operation

Servers, Bottlenecks, and Scaling

The Simplest Tandem Network

SoE SoR Network

Dynamic Operation Tr << Ti

Workload Model and Observability

A Simple Workload Model

System Dynamics

Workload and System Comparisons

Workload Paradigms

System Visualizations

Performance Architecture Tools

What is Performance Architecture

Positional Sizings

Key Design Question

Core Ratio Sizings

Conclusions