divendres, 18 de desembre del 2015

Test Your Performance Skills (Responses)

A single-threaded compute-intensive program elapses 100 s when running in a system with one processor. What would the new elapsed time be if we upgrade the system with a processor twice as fast?
  • 100 s
  • 200 s
  • 50 s

A single-threaded compute-intensive program elapses 100 s when running in a system with one processor. What would the new elapsed time be if we upgrade the system with a second twin processor?
  • 100 s
  • 200 s
  • 50 s

IOPS (Input/Output Operations Per Second), is a performance measurement of
  • Response Time
  • Velocity
  • Throughput
  • Usage

The SAP Application Performance Standard, known as SAPS,  is a performance measurement of
  • Response Time
  • Velocity
  • Throughput
  • Usage

The storage subsystem XYZ delivers 10000 IOPS with an IO average response time of less than 5 ms. This implies that allowing a 10 ms response time per IO, it would deliver 20000 IOPS.
  • True
  • False

In a typical OLTP scenario doubling the workload, in the sense of doubling the number of users, implies doubling the response time.
  • True
  • False

In a typical OLTP scenario doubling the workload, in the sense of twice heavier requests, implies doubling the response time.
  • True
  • False

Doubling the processing capacity, in the sense of doubling the number of processors, implies halving the response time.
  • True
  • False

Doubling the processing capacity, in the sense of upgrading to a twice faster processor, implies halving the response time.
  • True
  • False

In a typical OLTP scenario an usage greater than 65% necessarily means bad response time.

  • True
  • False

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