In computer performance testing, Khornerstone is a multipurpose benchmark

Benchmark (computing)

In computing, a benchmark is the act of running a computer program, a set of programs, or other operations, in order to assess the relative performance of an object, normally by running a number of standard tests and trials against it...

 from Workstation Labs used in various periodicals such as UNIX Review

UNIX Review

UNIX Review was an American magazine covering technical aspects of the UNIX operating system and C programming. Recognized for its in-depth technical analyses, the journal also reported on industry confabs and included some lighter fare....

.

The benchmark consists of 22 separate tests, including public domain components (such as Sieve and Dhrystone

Dhrystone

Dhrystone is a synthetic computing benchmark program developed in 1984 by Reinhold P. Weicker intended to be representative of system programming. The Dhrystone grew to become representative of general processor performance...

) as well as proprietary components. Since it contains proprietary components, the source is not free

Free software

Free software, software libre or libre software is software that can be used, studied, and modified without restriction, and which can be copied and redistributed in modified or unmodified form either without restriction, or with restrictions that only ensure that further recipients can also do...

. The results of the 22 tests are normalized, producing a result measured in "Khornerstones".

The benchmark was introduced in 1986 and was commonly used until the mid 1990s.