In
computer science
Computer science is the study of computation, automation, and information. Computer science spans theoretical disciplines (such as algorithms, theory of computation, information theory, and automation) to practical disciplines (includin ...
, query throughput (QthD) is a measurement used to determine the performance of a
database system
In computing, a database is an organized collection of data stored and accessed electronically. Small databases can be stored on a file system, while large databases are hosted on computer clusters or cloud storage. The design of databases span ...
. The throughput metric is a classical throughput measure characterizing the ability of the system to support a
multi-user
Multi-user software is computer software that allows access by multiple users of a computer. Time-sharing systems are multi-user systems. Most batch processing systems for mainframe computers may also be considered "multi-user", to avoid leaving ...
workload in a balanced way.
Background
In the background there is an update stream that runs a series of insert/delete operations (one pair for each query user). The choice of the number of users is at the discretion of the test sponsor.
The throughput metric is computed as the total amount of work (S×17), converted to hours from seconds (3600 seconds per hour), scaled by the database volume (SF) and divided by the total elapsed time (T
s) required between the first query starting and the last query or update function completing.
Therefore, the complete formulation is:
:
References
Computer performance
Temporal rates
{{database-stub