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<title>Demand-based switching</title>
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<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">Demand-based switching</span></span>
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<p><b>Demand-based switching (DBS)</b> is a <a href="Computer_technology" class="mw-redirect" title="Computer technology">computer technology</a> term which refers to the process of using software to optimize the use of hardware resources.
</p><p><a href="Intel" title="Intel">Intel</a> uses demand-based switching power management technology to control power voltage consumption at different states of a computer's operations. DBS routines select a minimum <a href="Clock_speed" class="mw-redirect" title="Clock speed">clock speed</a> of the microprocessor appropriate to the workload which specific tasks being performed by the computer place on the processor. This results in less electricity being consumed, both by the processor and by fans counteracting excess heat output.
</p><p>Intel's processor technology takes advantage of DBS techniques.<sup id="cite_ref-Rahman2013_1-0" class="reference"><a href="#cite_note-Rahman2013-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-ParasharHariri2006_3-0" class="reference"><a href="#cite_note-ParasharHariri2006-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> AMD processors uses a similar process, which the company calls "Power Now".<sup id="cite_ref-ManiJee2007_4-0" class="reference"><a href="#cite_note-ManiJee2007-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup>
</p><p>Demand-based switching is also sometimes used in route-caching routines in local area networks to ensure efficient packet switching and traffic flow.<sup id="cite_ref-Hucaby2004_6-0" class="reference"><a href="#cite_note-Hucaby2004-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-FroomSivasubramanian2010_7-0" class="reference"><a href="#cite_note-FroomSivasubramanian2010-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> Software DBS algorithms are frequently used in Linux servers.<sup id="cite_ref-AhmadRanka2016_8-0" class="reference"><a href="#cite_note-AhmadRanka2016-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>
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<li id="cite_note-Rahman2013-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-Rahman2013_1-0">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">
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</style><cite id="CITEREFRezaur_Rahman2013" class="citation book cs1">Rezaur Rahman (3 September 2013). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=wZ-9AAAAQBAJ&pg=PA92"><i>Intel Xeon Phi Coprocessor Architecture and Tools: The Guide for Application Developers</i></a>. Apress. pp. 92–. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>1-4302-5927-2</bdi>.</cite></span>
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<li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text">Scaramella, Jed. Eastwood, Matthew. <a rel="nofollow" class="external text" href="http://sysinfo.isc.ucsb.edu/iscdirector/Sustain/IDC.Data.Center.Thermal.Challenges.pdf">"Solutions for the Datacenter's Thermal Challenges"</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160806100558/http://sysinfo.isc.ucsb.edu/iscdirector/Sustain/IDC.Data.Center.Thermal.Challenges.pdf">Archived</a> 2016-08-06 at the <a href="Wayback_Machine" title="Wayback Machine">Wayback Machine</a>. IDC Headquarters, Framingham, Massachusetts, 2007.</span>
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<li id="cite_note-ParasharHariri2006-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-ParasharHariri2006_3-0">^</a></b></span> <span class="reference-text"><cite id="CITEREFManish_ParasharSalim_Hariri2006" class="citation book cs1">Manish Parashar; Salim Hariri (15 December 2006). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=3VtfDzQJUy0C&pg=PA345"><i>Autonomic Computing: Concepts, Infrastructure, and Applications</i></a>. CRC Press. pp. 345–. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-1-4200-0935-4</bdi>.</cite></span>
</li>
<li id="cite_note-ManiJee2007-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-ManiJee2007_4-0">^</a></b></span> <span class="reference-text"><cite id="CITEREFKiran_ManiBradley_Jee2007" class="citation book cs1">Kiran Mani; Bradley Jee (14 December 2007). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=XK2xnKC5AQUC&pg=PA104"><i>On the Edge: A Comprehensive Guide to Blade Server Technology</i></a>. John Wiley & Sons. pp. 104–. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-0-470-82304-0</bdi>.</cite></span>
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<li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://techreport.com/review/11443/new-look-xeons-and-opterons-square-off/11">""POV-Ray power consumption and efficiency"</a>, <i>Tech Report</i>, </span>
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<li id="cite_note-Hucaby2004-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-Hucaby2004_6-0">^</a></b></span> <span class="reference-text"><cite id="CITEREFDavid_Hucaby2004" class="citation book cs1">David Hucaby (January 2004). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=-rnt_ik0mSYC&pg=PA66"><i>CCNP BCMSN Exam Certification Guide: CCNP Self-study</i></a>. Cisco Press. pp. 66–. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-1-58720-077-9</bdi>.</cite></span>
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<li id="cite_note-FroomSivasubramanian2010-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-FroomSivasubramanian2010_7-0">^</a></b></span> <span class="reference-text"><cite id="CITEREFRichard_FroomBalaji_SivasubramanianErum_Frahim2010" class="citation book cs1">Richard Froom; Balaji Sivasubramanian; Erum Frahim (21 June 2010). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=dkDsJmnsejEC&pg=PA222"><i>Implementing Cisco IP Switched Networks (SWITCH) Foundation Learning Guide: Foundation learning for SWITCH 642-813</i></a>. Cisco Press. pp. 222–. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-1-58714-165-2</bdi>.</cite></span>
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<li id="cite_note-AhmadRanka2016-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-AhmadRanka2016_8-0">^</a></b></span> <span class="reference-text"><cite id="CITEREFIshfaq_AhmadSanjay_Ranka2016" class="citation book cs1">Ishfaq Ahmad; Sanjay Ranka (3 February 2016). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=RUCBCwAAQBAJ&pg=PA695"><i>Handbook of Energy-Aware and Green Computing - Two Volume Set</i></a>. CRC Press. pp. 695–. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-1-4822-5444-0</bdi>.</cite></span>
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