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How Much of Your Distributed Computing Power Is Actually “Usable”?. Bradford Camp - Safeway, Inc. Christopher Lynn - Safeway, Inc. Who is the audience?. How many years have participated in CMG 1, 3, 5, 10?

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How Much of Your Distributed Computing Power Is Actually “Usable”?

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How much of your distributed computing power is actually usable

How Much of Your Distributed Computing Power Is Actually “Usable”?

Bradford Camp - Safeway, Inc.

Christopher Lynn - Safeway, Inc.


Who is the audience

Who is the audience?

  • How many years have participated in CMG 1, 3, 5, 10?

  • How many of you focus on distributed servers (unix, windows), mainframe, EDW, tandem, network?

  • What is your enterprise overall average CPU utilization? (5%, 10%, 20%, 30%)


Disclaimers

Disclaimers

  • There will be no Greek letters in this presentation.

  • The most sophisticated math in this presentation is an average.


What is the right level of cpu utilization

What is the “right” level of CPU utilization?

  • 60% for a webserver?

  • 75% for a database server?

  • 90% or even 100% for a batch server?

What level of insurance is “Best”?

  • Cluster/Load Balancing Options?

  • Application Conflict Isolation?

  • Unexpected Changes?


Status quo waste drivers

Status Quo/ “Waste” Drivers

  • Clusters

    • Active:Passive (1:1, 2:1, 3:1, 4:1)

  • Load balancing

    • 2 nodes (for availability even if didn’t need the capacity)

    • 3-15 nodes

  • Incompatability

    • Legacy applications that the business doesn’t want to spend the time or money to upgrade or test on newer versions.

    • Lack of standards resulting in many isolated versions

  • “Max” utilization of a system

    • System Administrators had/have a utilization number in their head of what they won’t run above

  • Cheapest Purchasing Unit

    • Need 2 processors, but cheaper to buy a quad core – “waste” more, but cheaper (prior to virtualization)


The under utilization gap

The Under-Utilization Gap

  • Macro Capacity Planning

  • Terminology

    • Available:Physical Resources

    • Usable:Not Reserved or Not Incompatible

    • Unusable:Available, but Not Usable

    • Unutilized:Usable, but Not Used

  • Computing Power Standard - SpecInt


The gap

The Gap


How much processing power is really usable

How Much Processing Power is Really Usable?

  • The Key Factors:

    • Sustained Peak Maximum CPU Level (SPMCL) (Insurance)

    • High Availability (Insurance):

      • Redundant Solutions

      • Load Balancing

    • Incompatibility (Legacy Costs):

      • Multiple Technology Standards

      • Application Incompatibility


Usable computing power

Usable Computing Power


Usable power spmcl

Usable Power - SPMCL


Quantifying the key factors

Quantifying the Key Factors


Your next steps

Your Next Steps

Clarify Your Actual Usable Computing Power:

  • Define Your SPMCLs (Sustained Peak Maximum CPU Level )

  • Understand Your HA and LB Configurations

  • Identify Your Incompatibility Issues


Conclusions

Conclusions

  • Organizations are probably “wasting” less resource than initially thought.

  • High Availability, Insurance, and Standards have real long term costs beyond initial capital investment.

  • There is no 1 right number for what CPU utilization “should” be.

  • Even with this perspective there is usually still more unutilized capacity.

  • These principles can also be applied to other resources like File System Space.


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