Getting System Sizing and Getting System Sizing and performance - - PowerPoint PPT Presentation

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Getting System Sizing and Getting System Sizing and performance - - PowerPoint PPT Presentation

Sep 13, 2023 272 likes •525 views

Getting System Sizing and Getting System Sizing and performance testing right performance testing right Steve Hazeltine Steve Hazeltine Sema Group Sema Group Andrew J ohnston Andrew J ohnston Independent Consultant, Sema Group Asscociate

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SLIDE 1

SEMA SEMA GROUP GROUP

Getting System Sizing and Getting System Sizing and performance testing right performance testing right

Steve Hazeltine Steve Hazeltine

Sema Group Sema Group

Andrew J

  • hnston

Andrew J

  • hnston

Independent Consultant, Sema Group Independent Consultant, Sema Group Asscociate Asscociate

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SLIDE 2

SEMA SEMA GROUP GROUP

Summary Summary

  • The rentals business

The rentals business

  • Why prototype performance?

Why prototype performance?

  • The prototyping process

The prototyping process

  • Our results

Our results

  • Conclusions

Conclusions

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SLIDE 3

SEMA SEMA GROUP GROUP

The Rentals Business The Rentals Business

Sales Person

— Confirm

Order

– Check

Availability

˜ Rent ™ Return

Stock Customer

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SLIDE 4

SEMA SEMA GROUP GROUP

Why Prototype Performance? Why Prototype Performance?

  • Balance costs against risks:

Balance costs against risks:

  • Hardware Costs

Hardware Costs

  • Cut back to old system

Cut back to old system

  • User perception

User perception

  • Loss of business

Loss of business

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SLIDE 5

SEMA SEMA GROUP GROUP

Process Overview Process Overview

Current System Load & Performance Performance of prototyped key transactions Calculate Required Capacity Choose Platform Validate Choice

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SLIDE 6

SEMA SEMA GROUP GROUP

Measuring Current System Load Measuring Current System Load

Current System Load & Performance Performance of prototyped key transactions Calculate Required Capacity Choose Platform Validate Choice

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SLIDE 7

SEMA SEMA GROUP GROUP

Measuring the Transaction Profile Measuring the Transaction Profile

Existing Application Log

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SLIDE 8

SEMA SEMA GROUP GROUP

Measuring the Transaction Profile Measuring the Transaction Profile

Existing Application Log VB Driving software Terminal Emulator Access Database

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SLIDE 9

SEMA SEMA GROUP GROUP

Prototyping Key Transactions Prototyping Key Transactions

Current System Load & Performance Performance of prototyped key transactions Calculate Required Capacity Choose Platform Validate Choice

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SLIDE 10

SEMA SEMA GROUP GROUP

Prototyping Key Transactions Prototyping Key Transactions

  • Used Development System
  • Partially tested software
  • Provided CPU and disk usage
  • CPU would be bottleneck

Prototype Application Script VB Driving software Terminal Emulator

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SLIDE 11

SEMA SEMA GROUP GROUP

Calculating Required Capacity Calculating Required Capacity

Current System Load & Performance Performance of prototyped key transactions Calculate Required Capacity Choose Platform Validate Choice

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SLIDE 12

SEMA SEMA GROUP GROUP

Calculating Required Capacity Calculating Required Capacity

  • Lightly loaded prototype indicates

Lightly loaded prototype indicates processor speed processor speed

  • Prototype under load indicates total

Prototype under load indicates total processor power required processor power required

  • Memory from vendor recommendations

Memory from vendor recommendations

  • Disk from old system and vendor

Disk from old system and vendor recommendations - prototype valuable recommendations - prototype valuable

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SLIDE 13

SEMA SEMA GROUP GROUP

Choose Platform Choose Platform

Current System Load & Performance Performance of prototyped key transactions Calculate Required Capacity Choose Platform Validate Choice

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SLIDE 14

SEMA SEMA GROUP GROUP

Choose Processors Choose Processors

Single Transaction Time Supported Transaction Rate 2s Target Zone 3700/hour 110 MHz Sparc 5

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SLIDE 15

SEMA SEMA GROUP GROUP

Single Transaction Time 2s Target Zone 3700/hour 110 MHz Sparc 5 2 x 50 MHz Sparc 20 4 x 50 MHz Sparc 20

Choose Processors Choose Processors

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SLIDE 16

SEMA SEMA GROUP GROUP

Single Transaction Time 2s Target Zone 3700/hour 110 MHz Sparc 5 2 x 50 MHz Sparc 20 4 x 50 MHz Sparc 20 2 x 70 MHz Sparc 20

Choose Processors Choose Processors

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SLIDE 17

SEMA SEMA GROUP GROUP

Choose Platform Choose Platform

  • Consider

Consider

  • Cost

Cost

  • Error Margin

Error Margin

  • Growth (business and MIS)

Growth (business and MIS)

  • Rent memory and processors if

Rent memory and processors if uncertain uncertain

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SLIDE 18

SEMA SEMA GROUP GROUP

Choose Platform Choose Platform

Current System Load & Performance Performance of prototyped key transactions Calculate Required Capacity

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SLIDE 19

SEMA SEMA GROUP GROUP

Choose Platform Choose Platform

Current System Load & Performance Performance of prototyped key transactions Calculate Required Capacity

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SLIDE 20

SEMA SEMA GROUP GROUP

Choose Platform Choose Platform

Current System Load & Performance Performance of prototyped key transactions Calculate Required Capacity

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SLIDE 21

SEMA SEMA GROUP GROUP

The Performance Test The Performance Test

Current System Load & Performance Performance of prototyped key transactions Calculate Required Capacity Choose Platform Validate Choice

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SLIDE 22

SEMA SEMA GROUP GROUP

The Performance Test The Performance Test

A p p l i c a t i

  • n

Control PC Users Other Functions Users Subjective response VB Driving software Terminal Emulator VB Driving software Terminal Emulator VB Driving software Terminal Emulator

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SLIDE 23

SEMA SEMA GROUP GROUP

Results of Our Project Results of Our Project

CPU %

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SLIDE 24

SEMA SEMA GROUP GROUP

Conclusions Conclusions

  • Confirm the business case first

Confirm the business case first

  • Concentrate on bottlenecks

Concentrate on bottlenecks

  • Invest in test tools that will do the job

Invest in test tools that will do the job

  • Involve your users throughout

Involve your users throughout