Concurrent user

In computer science, the number of concurrent users (sometimes abbreviated CCU) for a resource in a location, with the location being a computing network or a single computer, refers to the total number of people simultaneously accessing or using the resource. The resource can, for example, be a computer program, a file, or the computer as a whole.^[1]

Keeping track of concurrent users is important in several cases. First, some operating system models such as time-sharing operating systems allow several users to access a resource on the computer at the same time. As system performance may degrade due to the complexity of processing multiple jobs from multiple users at the same time, the capacity of such a system may be measured in terms of maximum concurrent users.^[2]^[3]

Second, commercial software vendors often license a software product by means of a concurrent users restriction. This allows a fixed number of users access to the product at a given time and contrasts with an unlimited user license. For example: Company X buys software and pays for 20 concurrent users. However, there are 100 logins created at implementation. Only 20 of those 100 can be in the system at the same time,^[1]^[4] this is known as floating licensing.

Concurrent user licensing allows firms to purchase computer systems and software at a lower cost because the maximum number of concurrent users expected to use the system or software at any given time (those users all logged in together) is only a portion of the total system users employed at a company. The concurrent licenses are global and shared by anyone who needs to use the system. This contrasts with "named-seats" licensing, in which one license must be purchased for each and every individual user, whether they are using the system or not.^[5]^[6]

If a company employs 400 system users in which 275 work during the day and 125 work at night, then they can opt to purchase only 275 concurrent user licenses since there will never be more than 275 users on the system during a normal work day. The night workers share 125 of the day users' licenses to use the system. For named-seat licenses, this same company would have to purchase 400 individual licenses, one for each user, and licenses would not be globally shared. The available options for licensing are entirely at the discretion of the vendor selling the product.

References

^ ^a ^b Hohmann, L. (2003). Beyond Software Architecture: Creating and Sustaining Winning Solutions. Addison-Wesley Professional. pp. 76–8. ISBN 9780132465946.
^ Sharma, D.P. (2008). Foundation of Operating Systems. Excel Books. pp. 10–11. ISBN 9788174466266.
^ Chauhan, S.; Saxena, A.; Gupta, K. (2006). Fundamentals of Computer. Firewall Media. p. 84. ISBN 9788170088547.
^ Pallatto, J. (12 October 2005). "Study Shows Enterprises Favor Concurrent-User Software Licenses". eWeek. QuinStreet, Inc. Retrieved 2 March 2019.
^ Practising Law Institute (2006). Understanding the Intellectual Property License. Practising Law Institute. pp. 140–42.
^ Sommer, T. (May 2013). "Top 200 SAM Terms – A Glossary Of Software Asset Management Terms". OMTCO. Archived from the original on 10 August 2013. Retrieved 2 March 2019.

v t e Concurrent computing
General	Concurrency Concurrency control Concurrent data structures Concurrent hash tables Concurrent users Indeterminacy Linearizability
Process calculi	CSP CCS ACP LOTOS π-calculus Ambient calculus API-Calculus PEPA Join-calculus
Classic problems	ABA problem Cigarette smokers problem Deadlock Dining philosophers problem Producer–consumer problem Race condition Readers–writers problem Sleeping barber problem
Category: Concurrent computing

Read other articles:

The Flower That Shattered the Stone

1990 studio album by John DenverThe Flower That Shattered the StoneStudio album by John DenverReleasedSeptember 1990Length50:19LabelWindstarProducerJohn Denver, Roger NicholsJohn Denver chronology Earth Songs(1990) The Flower That Shattered the Stone(1990) Christmas, Like a Lullaby(1990) Professional ratingsReview scoresSourceRatingAllmusic[1] The Flower That Shattered the Stone is the 23rd studio album by American singer-songwriter John Denver. It was released in September 1...

Omar Abdulrahman

Omar Abdulrahman Omar Abdulrahman (2016)Informasi pribadiNama lengkap Omar Abdulrahman Ahmed Al Raaki Al AmoodiTanggal lahir 20 September 1991 (umur 32)Tempat lahir Riyadh, Arab SaudiTinggi 173 m (568 ft)[1]Posisi bermain Gelandang serang/sayapInformasi klubKlub saat ini Al AinNomor 10Karier junior2000–2005 Al Hilal2007–2008 Al AinKarier senior*Tahun Tim Tampil (Gol)2008- Al Ain 98 (26)Tim nasional‡2007-2010 UAE U20 4 (1)2010–2013 UAE U23 15 (1)2010– UAE 53 (...

Bondo, Italia

Bondo, Italia abolished municipality in Italy (en)Frazionecadastral municipality (en) Bondo (it) Tempatcategoria:Articles mancats de coordenades Negara berdaulatItaliaRegion otonom dengan status khususTrentino-Tirol SelatanProvinsi di ItaliaTrentinoCommune di ItaliaSella Giudicarie (en) NegaraItalia GeografiLuas wilayah10,65 km² [convert: unit tak dikenal]Ketinggian823 m Berbatasan denganBolbeno Tione di Trento Zuclo Breguzzo Roncone Lardaro Informasi tambahanKode pos38087 (già 38081) ...

Ujunggebang, Susukan, Cirebon

UjunggebangDesaKantor Kuwu (Kepala Desa) UjunggebangNegara IndonesiaProvinsiJawa BaratKabupatenCirebonKecamatanSusukanKode Kemendagri32.09.27.2011 Luas650 haJumlah penduduk6.606 jiwaKepadatan102/km2 Ujunggebang adalah desa di Kecamatan Susukan, Cirebon, Jawa Barat, Indonesia. Desa ini terletak di perbatasan Kabupaten Cirebon dan Kabupaten Indramayu. Sebagian besar penduduknya bermata pencaharian sebagai petani terutama petani padi karena topografinya yang mendukung pertanian sawah. Denga...

The Day After Trinity

1980 American documentary film The Day After TrinityDVD cover, 2002, with photograph by Philippe Halsman, 1958Directed byJon H. ElseWritten byDavid PeoplesJanet PeoplesJon ElseProduced byJon H. Else[1]Peter Baker(executive producer)StarringHans BetheRobert SerberRobert WilsonFrank OppenheimerI.I. RabiFreeman DysonStanislaw UlamJ. Robert Oppenheimer (archive footage)Narrated byPaul FreesCinematographyTom McDonoughDavid EsparStephen LighthillEdited byDavid PeoplesRalph WikkeMusic byMart...

Komando Distrik Militer 0711

Komando Distrik Militer 0711Lambang Korem 071/WijayakusumaNegara IndonesiaAliansiKorem 071/WijayakusumaCabangTNI Angkatan DaratTipe unitKomando Distrik MiliterPeranSatuan TeritorialBagian dariKodam IV/DiponegoroMakodimPemalangJulukanKodim 0711/PMLBaret H I J A U Situs webhttps://www.kodim0711.com/ Komando Distrik Militer 0711/Pemalang merupakan satuan kewilayahan yang berada dibawah komando Korem 071/Wijayakusuma. Kodim 0711/Pemalang memiliki wilayah teritorial yang meliputi Ka...

2014 FINA World Swimming Championships (25 m) – Men's 50 metre freestyle

Men's 50 metre freestyle at the 2014 FINA World Swimming Championships (25 m)Dates4 December (heats and semifinals)5 December (final)Competitors174 from 115 nationsWinning time20.26Medalists Florent Manaudou France Marco Orsi Italy César Cielo Brazil← 20122016 → 2014 FINA World Swimming ChampionshipsFreestyle50 mmenwomen100 mmenwomen200 mmenwomen400 mmenwomen800 mwomen1500 mmenBackstroke50 mme...

British Columbia Coast

Coastal region of British Columbia, Canada This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: British Columbia Coast – news · newspapers · books · scholar · JSTOR (February 2018) (Learn how and when to remove this message) Region in British Columbia, CanadaBritish Columbia Coast French: Côte de la Colombie-Bri...

Edmond S. Meany

American politician Edmond S. MeanyEdmond S. Meany, early 1920sMember of the Washington House of Representativesfrom the 42nd districtIn office1891–1895 Personal detailsBornEdmond Stephen MeanyDecember 28, 1862East Saginaw, MichiganDiedApril 22, 1935University of Washington, Seattle, WashingtonNationalityAmericanOccupationprofessor Edmond Stephen Meany (December 28, 1862 – April 22, 1935) was a professor of botany and history at the University of Washington (UW). He was an alu...

2024 United States presidential election in Washington (state)

Main article: 2024 United States presidential election 2024 United States presidential election in Washington ← 2020 November 5, 2024 2028 → Nominee Joe Biden(presumptive) Donald Trump(presumptive) Party Democratic Republican Home state Delaware Florida Running mate Kamala Harris(presumptive) TBA Incumbent President Joe Biden Democratic Elections in Washington Federal government Presidential elections 1892 1896 1900 1904 1908 1912 1916 1920 1924 1928 19...

Сенькагурт

СелоСенькагуртудм. Сенькагурт 57°41′42″ с. ш. 53°52′19″ в. д.HGЯO Страна Россия Субъект Федерации Удмуртия Муниципальный район Дебёсский Сельское поселение Тольенское История и география Часовой пояс UTC+4:00 Население Население ↘19[1] человек Официальный яз...

Isle of Man TT

Annual motorcycle race held on the Isle of Man Isle of Man Tourist Trophy redirects here. For a series of car races held on the Isle of Man between 1905 and 1922, see RAC Tourist Trophy. Isle of Man Tourist Trophy Region Isle of Man Course Isle of Man TT Mountain Circuit Type Public road course Clerk of the course Gary Thompson MBE BEM Event organiser ACU Events Ltd Principal sponsor Isle of Man Department for Enterprise History First race 1907 Number of race meetings 103 (up to 2024) First w...

Fred Taylor (basketball, born 1924)

American baseball player For the retired professional basketball player, see Fred Taylor (basketball, born 1948). This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. Please help improve this article by introducing more precise citations. (February 2008) (Learn how and when to remove this message) Fred TaylorTaylor, circa 1966Biographical detailsBorn(1924-12-03)December 3, 1924Zanesville, Ohio, U.S.Di...

Pemilihan umum Bupati Blora 2015

Pemilihan umum Bupati Blora 2015201020209 Desember 2015Kandidat Calon Abu Nafi (Wakil Bupati) (2010-2015) Djoko Nugroho (Bupati) Kusnanto (Ketua DPRD Blora) (2009-2014) Partai PPP NasDem Partai Golongan Karya Suara rakyat 207.582 253.394 34.205 Persentase 41,92% 51,17% 6,91% Peta persebaran suara Peta lokasi Kabupaten Blora Bupati petahanaDjoko Nugroho Demokrat Bupati terpilih Djoko Nugroho NasDem Pemilihan umum Bupati Blora 2015 dilaksanakan pada 9 Desember 2015 untuk memilih Bu...

Waterbury–Oxford Airport

Not to be confused with Waterbury Airport (Connecticut). Airport in Oxford, ConnecticutWaterbury–Oxford AirportIATA: OXCICAO: KOXCFAA LID: OXCSummaryAirport typePublicOwnerConnecticut Airport AuthorityLocationOxford, ConnecticutElevation AMSL726 ft / 221 mCoordinates41°28′43″N 073°08′07″W / 41.47861°N 73.13528°W / 41.47861; -73.13528WebsiteOXC websiteMapsFAA airport diagramRunways Direction Length Surface ft m 18/36 5,800 1,768 Asphalt Stat...

Udinese Calcio 1987-1988

Voce principale: Udinese Calcio. Udinese CalcioStagione 1987-1988 Sport calcio Squadra Udinese Allenatore Massimo Giacomini (1ª-5ª) Marino Lombardo (6ª-14ª) Nedo Sonetti (15ª-38ª) Direttore tecnico Bora Milutinović (6ª-14ª) Presidente Giampaolo Pozzo Serie B10º posto Coppa ItaliaPrimo turno Maggiori presenzeCampionato: Galparoli (38) Miglior marcatoreCampionato: Vagheggi (10) StadioFriuli 1986-1987 1988-1989 Si invita a seguire il modello di voce Questa voce raccoglie le infor...

仮設住宅

仮設住宅（かせつじゅうたく、英: Temporary housing, Temporary home）は、自然災害などにより住居を失った者に対して行政が貸与する仮設の住宅。アメリカ合衆国アメリカ合衆国では国家安全保障省所管の連邦緊急事態管理庁 (FEMA) などが担当官庁となる[1]。災害発生時にはアメリカ陸軍工兵隊が被災した重要な公共施設の復旧、仮設住宅や発電機の設置を支援して�...

Vought F6U Pirate

Cet article est une ébauche concernant un aéronef et les forces armées des États-Unis. Vous pouvez partager vos connaissances en l’améliorant (comment ?) selon les recommandations des projets correspondants. Vought F6U Pirate F6U en vol. Constructeur Vought Rôle Chasseur Statut Annulé en 1950 Premier vol 2 octobre 1946 Nombre construits 33 Équipage 1 Motorisation Moteur Westinghouse J34-WE-30A Nombre 1 Type Turboréacteur avec post-combustion Poussée unitaire 14,4 kN (sec)/18...

Friedrichshain-Kreuzberg

For the museum, see Friedrichshain-Kreuzberg Museum. For the electoral district, see Berlin-Friedrichshain-Kreuzberg – Prenzlauer Berg East. You can help expand this article with text translated from the corresponding article in German. (August 2020) Click [show] for important translation instructions. View a machine-translated version of the German article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise er...

Spalding (company)

Sporting goods company SpaldingCompany typeSubsidiaryIndustrySports equipmentFounded1876; 148 years ago (1876)FounderAlbert SpaldingHeadquartersBowling Green, Kentucky, United StatesArea servedNorth AmericaAustraliaProductsBasketballsOwnerBerkshire HathawayParentFruit of the LoomSubsidiariesDudleyWebsitespalding.com Spalding is an American sports equipment manufacturing company. It was founded by Albert Spalding in Chicago in 1876 as a baseball manufacturer, and is today hea...

PROFILPELAJAR.COM