For batch processing, the primary performance concerns are how much work can be completed in a given time and how long it takes for a job to finish. Throughput measures the rate of processing (e.g., transactions per hour), directly addressing the volume of work. Wait times, or more broadly, turnaround time (the total time from submission to completion), measures the job's duration. These two metrics are fundamental for evaluating the efficiency and capacity of a batch processing system.

B. Number of records deleted: This is a functional correctness metric that verifies what the job did, not a performance metric that measures how well or how fast it performed.

C. Average percentage of network latency: Network latency is a contributing environmental factor that can affect performance, but it is not a primary metric of the batch process itself, unlike throughput or completion time.

D. Number of concurrent virtual users: This metric is specific to load testing of online, interactive systems (e.g., web applications) and is irrelevant for non-interactive batch processing.

1. Jain

R. (1991). The Art of Computer Systems Performance Analysis: Techniques for Experimental Design

Measurement

Simulation

and Modeling. Wiley. On page 37

Section 3.2

"Criteria for Selecting an Evaluation Technique

" key performance metrics are defined. For batch jobs

throughput (jobs per second) and turnaround time (time between submission and completion

which includes wait time) are listed as key metrics.

2. Lilja

D. J. (2000). Measuring Computer Performance: A Practitioner's Guide. Cambridge University Press. Chapter 2

"Performance Metrics

" discusses common metrics. Throughput is defined as the amount of work done per unit time

and response time (or turnaround time for batch systems) is the time to complete a task. These are presented as fundamental performance measures. (See pages 13-15).

3. Menascé

D. A.

& Almeida

V. A. (2008). Performance by Design: Computer Capacity Planning by Example. Prentice Hall. Chapter 3

"Fundamental Concepts and Laws

" defines key performance metrics including response time

throughput

and utilization

which are universally applied to evaluate system performance

including batch systems.