8 vim li cas koj lub computer khiav qeeb qeeb
Lub latency ntawm lub network txuas yog nruab nrab ntawm cov sij hawm uas yuav tsum tau muaj rau cov ntaub ntawv mus ncig ntawm tus sender thiab receiver. Thaum tag nrho cov computer network muaj qee qhov teeb meem ntawm latency, qhov nyiaj nws txawv thiab tuaj yeem dheev nce rau ntau yam. Cov neeg xav tias cov kev npaj tos sijhawm no qeeb li lag luam .
Qhov Ceev ntawm Lub Teeb Ntawm Lub Tuam Txhab Tshuab
Tsis muaj tsheb khiav hauv lub vev xaib tuaj yeem khiav ceev tshaj qhov ceev ntawm lub teeb. Hauv tsev lossis hauv cheeb tsam network , qhov sib txawv nruab nrab ntawm cov khoom siv yog me me uas lub teeb ceev tsis muaj teeb meem, tab sis rau Internet kev sib txuas, nws yog ib qho zoo tshaj. Nyob rau hauv tag nrho cov neeg mob, lub teeb yuav tsum tau roughly 5 ms mus ncig 1,000 mais (li 1,600 kis lus mev).
Tsis tas li ntawd, feem ntau qhov kev sib txua hauv Internet uas nyob deb tshaj cov cables, uas tsis tuaj yeem nqa cov teeb liab sai li lub teeb vim tias lub hauv paus ntsiab lus ntawm kev hu ua physics hu ua kev zoom . Cov ntaub ntawv tshaj ib lub fiber optic cable, piv txwv li, yuav tsum muaj tsawg kawg yog 7.5 ms mus ncig rau 1,000 mais.
Cov Kev Nkag Hauv Internet Txuas Qub
Dhau li ntawm cov kev txwv ntawm physics, ntxiv network latency yog tshwm sim thaum cov tsheb khiav hauv Internet servers thiab lwm caj qaum cov cuab yeej. Lub latency typical ntawm kev txuas hauv Internet kuj txawv nyob ntawm nws hom. Txoj kev tshawb no Measuring Broadband America - Lub Ob Hlis 2013 tau qhia txog cov kev txuas hauv Internet xws li cov kev sib txuas lus ntawm cov kev pab cuam hauv Teb Chaws Asmeskas:
- fiber optic : 18 ms
- Cable Internet: 26 ms
- DSL: 44 ms
- satellite Internet: 638 ms
Ua rau Lag hauv Internet Sib Txuas
Cov latencies ntawm cov kev sib txuas hauv Internet tau hloov me ntsis ntawm ib feeb mus rau lwm qhov, tab sis qhov kev lag luam ntxiv los ntawm cov me nyuam kuj nce qib thaum hnov caij dej los yog khiav cov ntawv hauv online. Cov hauv qab no yog qhov chaw ntawm Internet lag:
Kev thauj mus los hauv Internet: Siv xov tooj hauv kev siv internet thaum lub sijhawm siv tshuaj ntau ntau hnub feem ntau ua lag luam. Qhov xwm ntawm qhov kev lag luam no txawv ntawm qhov chaw pabcuam thiab tus neeg thaj chaw. Hmoov tsis, dhau ntawm qhov chaw khiav tsheb lossis hloov cov kev pabcuam hauv Internet, ib tus neeg siv yuav tsis tuaj yeem zam cov lag luam no.
Daim ntawv thov kev pab hauv online: Multiplayer online games, Web sites, thiab lwm tus neeg thov kev pabcuam network siv sib koom siv Internet servers. Yog tias cov servers no ua dhau los nrog kev ua si, cov neeg tau txais kev lag luam.
Huab cua thiab lwm yam kev cuam tshuam hauv wireless : Satellite, wireless wireless broadband , thiab lwm yam kev sib txuas lus sib txuas lus hauv internet yog tshwj xeeb tshaj plaws rau cov teeb liab cuam tshuam los nag. Wireless cuam tshuam ua rau cov ntaub ntawv xa mus rau kev sib tsoo, ua lag luam los ntawm rov qab xa cov qeeb.
Lag Luam Hloov Chaw : Muaj qee tus neeg uas ua si hauv online nruab ib lub tshuab hu ua lag luam ntawm lawv lub network. Tus lag luam hloov lag luam yog qhia tshwj xeeb tshaj yog tsim los cuam tshuam cov teeb tsa kev lag luam thiab qhia cov ntsiab lus qeeb rau hauv cov nstuam ntawm cov ntaub ntawv rov qab mus rau lwm cov gamers txuas nrog kev sib tham nyob. Koj tuaj yeem ua tau me ntsis los daws qhov teebmeem no qhov teebmeem dua yog tsis txhob ua si nrog cov neeg uas siv cov kev lag luam; qhov zoo, lawv yog cov tsis tshua muaj tshwm sim.
Ua rau Lag hauv Tsev Networks
Cov chaw txuas ntawm network lag luam kuj muaj nyob hauv ib lub tsev network raws li nram no:
Routers overloaded los yog modem : Txhua tus router network nws yuav rov los yoojyim yog tias muaj ntau tus neeg tau siv nws tib lub sijhawm. Cov kev sib tham hauv lub network ntawm ntau tus neeg txhais tau tias lawv muaj qee zaum lawv tos txhua qhov kev thov kom tau ua, ua lag luam. Ib tug neeg muaj peev xwm hloov lawv tus router nrog ib tus qauv zoo dua, los yog ntxiv lwm tus router rau lub network, los pab daws qhov teeb meem no.
Ib yam li, qhov teeb meem hauv lub network yog tshwm sim ntawm qhov chaw nyob lub modem thiab kev txuas mus rau cov kws kho mob hauv Internet yog tias muaj teeb meem nrog cov tsheb khiav: Nyob ntawm kev sib txuas ntawm koj qhov txuas hauv Internet , sim kom tsis txhob muaj ntau cov kev sib txuas hauv Internet thiab cov sijhawm hauv internet los txo cov lag luam no.
Ntau tus neeg siv khoom ntiag tug : Cov PCs thiab lwm tus neeg siv khoom kuj yog ib qho ntawm qhov chaw lag luam yog tias tsis muaj peev xwm ua haujlwm cov ntaub ntawv network sai sai. Txawm tias cov computers uas niaj hnub tseem muaj hwj chim txaus rau feem ntau, lawv tuaj yeem qeeb ho yog tias ntau daim ntawv sau npe siv khiav ib txhij.
Txawm tias khiav cov ntawv sau npe uas tsis tsim kom muaj kev sib tshuam hauv lub network tuaj yeem ua lag luam; Piv txwv, ib qho misbehaving kev pab cuam yuav haus 100 feem pua ntawm cov kev siv CPU rau ntawm lub tshuab uas qeeb lub koos pis tawj los ntawm kev ua haujlwm network rau lwm cov ntawv.
Malware : Lub network cab worm hijacks lub computer thiab nws lub network interface, uas tuaj yeem ua rau nws ua sluggishly, zoo ib yam li yog overloaded. Khiav tawm software antivirus hauv network pab tau txhawm rau txhom tau cov kab mob no.
Kev siv wireless : Cov neeg ua si hauv online gamers, ua piv txwv, feem ntau nyiam khiav lawv cov khoom nyob hauv wired Ethernet tsis siv Wi-Fi vim tias tsev Ethernet txhawb nqa qis tshaj. Thaum cov nyiaj txuag feem ntau tsuas yog siv ob peb lub milliseconds hauv kev xyaum, kev sib txuas sib wired kuj tsis txhob muaj kev cuam tshuam cov kev cuam tshuam uas ua rau cov lag luam tseem ceeb yog tshwm sim.
Npaum Li Cas Ntau Npaum?
Tej yam ntawm lag luam nyob ntawm seb ib tug neeg ua haujlwm hauv lub network thiab, qee qhov kev kawm, theem ntawm kev ua haujlwm network lawv tau loj hlob. Cov neeg siv cov satellite hauv Internet , tos ntev latencies thiab tsis xav pom ib ntus ntawm ib ntus ntawm 50 lossis 100 ms ntxiv.
Rau cov online gamers, ntawm qhov tod tes, xav kom lawv lub network txuas mus nrog tsawg dua 50 ms ntawm latency thiab yuav ceev nrooj hnov cov lag lag luam tshaj qhov ntawd. Feem ntau, cov kev siv online tau ua qhov zoo tshaj plaws thaum network latency nyob qis qis dua 100 ms thiab cov lag luam yuav ntxiv rau cov neeg siv.