Computer performance: Difference between revisions

Revision as of 16:25, 6 January 2024

Revision as of 17:12, 6 January 2024

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===As an aspect of software quality===

[[Computer software]] performance, particularly [[software application]] response time, is an aspect of [[software quality]] that is important in [[human–computer interaction]]s.

== Performance engineering ==

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{{Main|Performance per watt}}

System designers building [[parallel computing|parallel computers]], such as [[Google search technology#Production hardware|Google's hardware]], pick CPUs based on their speed per watt of power, because the cost of powering the CPU outweighs the cost of the CPU itself.<ref>{{cite web |title=EEMBC -- the Embedded Microprocessor Benchmark Consortium |url=http://www.eembc.org/benchmark/consumer.asp?HTYPE=SIM |title=EEMBC -- the Embedded Microprocessor Benchmark Consortium |access-date=2009-01-21 |url-status=dead |archive-url=https://web.archive.org/web/20050327005323/http://www.eembc.org/benchmark/consumer.asp?HTYPE=SIM |archive-date=2005-03-27 |access-date=2009-01-21}}[http://news.cnet.com/Power+could+cost+more+than+servers,+Google+warns/2100-1010_3-5988090.html]</ref>

For spaceflight computers, the processing speed per watt ratio is a more useful performance criterion than raw processing speed.<ref>D. J. Shirley; and M. K. McLelland. [https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=2656&context=smallsat "The Next-Generation SC-7 RISC Spaceflight Computer"]. p. 2.</ref>

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"The Incredible Shrinking CPU".

2004.

[http://www.realworldtech.com/page.cfm?ArticleID=RWT062004172947&p=5] {{Webarchive|url=https://web.archive.org/web/20120531101531/http://www.realworldtech.com/page.cfm?ArticleID=RWT062004172947&p=5 |date=2012-05-31 }}</ref>

where