For instance, during the 1980s some compilers could detect a specific mathematical operation used in a well-known floating-point benchmark and replace the operation with a faster mathematically equivalent operation. Prior to 2000, computer and microprocessor architects used SPEC to do this, although SPEC's Unix-based benchmarks were quite lengthy and thus unwieldy to use intact.Ĭomputer manufacturers are known to configure their systems to give unrealistically high performance on benchmark tests that are not replicated in real usage.
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Running this much smaller snippet on a cycle-accurate simulator can give clues on how to improve performance. For example, if a benchmark extracts the key algorithms of an application, it will contain the performance-sensitive aspects of that application. While application benchmarks usually give a much better measure of real-world performance on a given system, synthetic benchmarks are useful for testing individual components, like a hard disk or networking device.īenchmarks are particularly important in CPU design, giving processor architects the ability to measure and make tradeoffs in microarchitectural decisions. Application benchmarks run real-world programs on the system. Synthetic benchmarks do this by specially created programs that impose the workload on the component. See BogoMips and the megahertz myth.īenchmarks are designed to mimic a particular type of workload on a component or system. For example, Pentium 4 processors generally operated at a higher clock frequency than Athlon XP or PowerPC processors, which did not necessarily translate to more computational power a processor with a slower clock frequency might perform as well as or even better than a processor operating at a higher frequency. Therefore, tests were developed that allowed comparison of different architectures.
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Software benchmarks are, for example, run against compilers or database management systems (DBMS).īenchmarks provide a method of comparing the performance of various subsystems across different chip/system architectures.Īs computer architecture advanced, it became more difficult to compare the performance of various computer systems simply by looking at their specifications. The term benchmark is also commonly utilized for the purposes of elaborately designed benchmarking programs themselves.īenchmarking is usually associated with assessing performance characteristics of computer hardware, for example, the floating point operation performance of a CPU, but there are circumstances when the technique is also applicable to software.
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.
( Learn how and when to remove this template message)Ī graphical demo running as a benchmark of the OGRE engine. WikiProject Computer science may be able to help recruit an expert. The specific problem is: Outdated or deprecated sources. This article needs attention from an expert in Computer science.
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