Isingeniso kwiLatency kwi-Computer Networks

Ixesha elithi latency libhekiselele nasiphi na iindidi ezininzi zokulibaziseka okwenzekayo ekuqhutyweni kwedatha yenethiwekhi. Uxhumano oluphantsi lokuxhumeka kwenethiwekhi lunye olufumana amaxesha amancinci okulibazisa, ngelixa uxhumano oluphezulu lwe-latency luba nexesha elide lokulibaziseka.

Ngaphandle kokubambezeleka kokubambezeleka, i-latency ingabandakanya ukulibaziseka kokusasazeka (iipropati zesimo esiziphathekayo) kunye nokuphuculwa kokulibaziseka (njengokungena kumaseva enkonzo okanye ukwenza i- network hops kwi-intanethi).

Nangona ukujonga kwejubane lomnatha kunye nokusebenza ngokuqhelekileyo kuqondwa nje nge- bandwidth , latency yinto enye ebalulekileyo. Nangona kunjalo, ekubeni umntu oqhelekileyo uyaziqhelanisa nombono wendlela yokuhamba, kuba nguye opapashwa ngabavelisi bezixhobo zonxibelelwano, imiba ye-latency ngokulinganayo namava okuphela komsebenzisi.

Ukumelana nokuLungisa

Nangona i-bandwidth yecandelo lokuxhunywa kwenethiwekhi lugxininiswe ngokubhekiselele kwi-teknoloji esetyenzisiweyo, inani elichanekileyo leedatha elihamba phezu kwayo (elibizwa ngokuba yi- passput ) lihluka kwixesha kwaye lichaphazeleka ngamanqanaba angaphezulu nakwezantsi.

Ukugqithisa kwe-latency kudala izibhengezo ezikhusela idatha ekuzaliseni umbhobho womnatha, ngaloo ndlela ukunciphisa ukugqithisa kunye nokunciphisa umda womda wokusebenza oqhagamshelwano.

Impembelelo ye-latency kwi-network output ingaba yesikhashana (ihlala imizuzwana embalwa) okanye iqhubeka (rhoqo) kuxhomekeke kumthombo wokulibaziseka.

Iinkonzo ze-Intanethi, i-Software kunye namadivaysi

Kwi- DSL okanye kwi-intanethi ye-intanethi, i-latencies ye-milliseconds engaphantsi kwe-100 (ms) iyayifaka kwaye ingaphantsi kwe-25 ms imvama inokwenzeka. Ngokuxhamla kwi-intanethi ye-intanethi , ngakolunye uhlangothi, i-latencies latency ingaba ngu-500 ms okanye ngaphezulu.

Inkonzo ye-intanethi elinganiswe kuma-20 Mbps inokwenza okubi kakhulu kunokuba isevisi ilinganiswe kwi-5 Mbps ukuba isebenza nge-latency ephezulu.

Isevisi ye-intanethi ye-intanethi ibonisa umehluko phakathi kwe-latency kunye ne-bandwidth kwikhompyutha. Ithempyutheni inezikhundla zombini ophezulu kunye ne-latency ephezulu. Xa ulayisha ikhasi lewebhu, umzekelo, abaninzi abasebenzisi be-satellite bangabona ukulibaziseka okubonakalayo kwixesha abangena kwidilesi ngexesha eliqala ukulayisha.

Le latency ephakamileyo ibangelwa ngokukhawuleza ukusabalala njengoko umyalezo wesicelo uhamba ngesantya sokukhanya kwisikhululo seSatellite kunye nokubuyela kwinethiwekhi yasekhaya . Emva kokuba imilayezo ifumaneka kwiMhlaba, ke ke, imithwalo yephepha ihamba ngokukhawuleza kwezinye i-intanethi ye-intanethi ye-intanethi (njenge-DSL okanye intanethi ye-intanethi).

I-WAN latency ngenye indlela yokwaziswa okubangelwa xa intanethi ixakeke ekusebenziseni i-traffic ukuya kwinqanaba lokuba ezinye izicelo zilibalekile ekubeni i- hardware ayikwazi ukuyenza yonke into ngokukhawuleza. Oku kuchaphazela inethiwekhi yocingo kwakhona ukususela kwinethiwekhi yonke isebenza kunye.

Impazamo okanye enye ingxaki nge-hardware inokunyusa ixesha eliyifunayo ukuba lifunde idatha, yenye esinye isizathu sokuba i-latency. Le nto inokuba yimeko ye-hardware yenethiwekhi okanye i-hardware yecebo, njengengxowankulu yecingo ekhulayo eyenza ixesha ukugcina okanye ukufumana idatha.

Isofthiwe eqhubayo kwinkqubo inokubangela i-latency kwakhona. Ezinye iinkqubo ze-antivirus zihlalutya zonke iinkcukacha ezigelezayo nangaphandle kwikhompyutheni, okuqinisekileyo isizathu esithile sokuba ezinye iikhompyutheni ezikhuselekileyo zihamba kancane kunezinye. Idatha ehlalutyiweyo idla ngokuhlanjululwa kwaye ichithwe phambi kokuba isetyenziswe.

Ukulinganisa iNethiwekhi yokuLungisa

Izixhobo zonxibelelwano ezifana neemvavanyo ze-ping kunye ne- traceroute measure latency ngokuqaphela ixesha elithatha ipakethi yenethiwekhi enikeziweyo ukuhamba ukusuka kumthombo ukuya kwindawo eya kuyo, kunye ne-back-called time-trip trip time .

Ixesha lohambo lokujikeleza akuyona indlela yodwa yokulinganisa i-latency kodwa yinto eqhelekileyo.

Ubunjani beNkonzo (QoS) iimpawu zokunxibelelana kweekhaya kunye nezoshishino zenzelwe ukukunceda ukulawula zombini ububanzi bomda kunye ne-latency ndawonye ukuze unikeze ukusebenza okuqhubekayo.