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Copyright 5/2014 t Low Country North Shore Consulting
KPIs and Machine Comparisons
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The Four basic KPIs• Internal Throughput Rate (ITR)
– Metric measured by most benchmarks– Given workload find the maximum steady state throughput– Divide result by steady state utilization. – Usually I~ Result because utilization is very high
• External Throughput Rate (ETR)– This is the average throughput rate over a period of time which has business significance– ETR ~ ITR/Average Utilization– This is the Enterprise view of performance (How much work do I do each shift?)
• N – The number of independent workload instances that a machine can host (VMs, Subsystems,
Guests, Tenants, Applications, DBs, etc.)– Varies by workload usage pattern and size– It is determined by machine capacity
• Speed– The inverse of response time– Related to throughput rate, usage pattern, utilization, and service level.– This is the users’ view of performance (How fast does my work get done?)
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The three Comparators
• Benchmarks – ITR at acceptable Speed
• Operational Throughput– ETR at acceptable Speed
• Operational Consolidation– N at acceptable Speed
Enterprise class machines should be compared on Operational KPI Comparators
Speed is included in these to represent the user point of view
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Benchmarks
Wider diamonds have greater comparator values
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OperationalThroughput
Wider diamonds have greater comparator values
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Capacity
Wider diamonds have greater comparator values
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Comparing Cores using Benchmarks Intel 8890 v2 to zEC12
The indicated zEC12 advantage will not be compelling because of price
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Comparing Cores on Operational Throughput Intel 8890 v2 to zEC12
Here Intel matches zEC12 speed because of low utilization but ETR suffers.
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Comparing Cores on Operational Consolidation Intel 8890 v2 to zEC12
Here zEC12 consolidates farm more workloads per core.
