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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

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
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
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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