Namuhla, i-CF Fiberlink izokhuluma ngezinkomba ezine ezinkulu zokulinganisa ukusebenza kwenethiwekhi: umkhawulokudonsa, ukubambezeleka, i-jitter, nokulahleka kwephakethe.

Amakhasimende asidinga kanjani ukuthi sihlole ukusebenza kwenethiwekhi, futhi singayihlola kusukela kulezi zici ezine.

1. Umkhawulokudonsa :

Umkhawulokudonsa uchazwa ku-Baidu Encyclopedia: “izinga eliphezulu kakhulu ledatha” elingadlula lisuka endaweni eyodwa kunethiwekhi iye kwelinye iphoyinti ngeyunithi yesikhathi.

Umkhawulokudonsa wenethiwekhi yekhompiyutha izinga eliphakeme kakhulu ledatha inethiwekhi engadlula kuyo, okungukuthi bangaki amabhithi ngomzuzwana (iyunithi evamile yi-bps (ibhithi ngomzuzwana)).

Kalula nje: umkhawulokudonsa ungaqhathaniswa nomgwaqo omkhulu, okubonisa inani lezimoto ezingadlula iyunithi yesikhathi;

2. Ukumelwa komkhawulokudonsa:

Umkhawulokudonsa ngokuvamile uvezwa njenge-bps, okubonisa ukuthi ingakanani ibhithi ngomzuzwana;

"Amabhithi ngomzuzwana" avame ukushiywa lapho kuchazwa umkhawulokudonsa. Isibonelo, i-bandwidth ingu-100M, okuyi-100Mbps empeleni, lapho i-Mbps ibhekisela kuma-megabits/s.

Kodwa iyunithi yesivinini esivame ukulanda isofthiwe yi-Byte/s (byte/second). Lokhu kubandakanya ukuguqulwa kwe-Byte ne-bit. U-0 noma u-1 ngamunye ohlelweni lwezinombolo kanambambili yingcosana, futhi iyunithi encane kakhulu yokugcina idatha, lapho amabhithi angu-8 abizwa ngokuthi i-byte.

Ngakho-ke, lapho siphatha i-broadband, i-100M yomkhawulokudonsa imele i-100Mbps, isivinini sokulanda inethiwekhi yethiyori singu-12.5M Bps kuphela, empeleni singase sibe ngaphansi kuka-10MBps, lokhu kungenxa yokusebenza kwekhompyutha yomsebenzisi, ikhwalithi yemishini yenethiwekhi, ukusetshenziswa kwezinsiza, ukuphakama kwenethiwekhi, inethiwekhi. umthamo wesevisi, ukubola kolayini, ukunciphisa isignali, isivinini sangempela senethiwekhi asikwazi ukufinyelela isivinini sethiyori.

2. Ukubambezeleka kwesikhathi:

Kalula nje, ukubambezeleka kubhekisela esikhathini esidingekayo ukuze umlayezo usuke komunye umkhawulo wenethiwekhi uye komunye;

Kusukela emiphumeleni ye-ping, ungabona ukuthi ukubambezeleka kwesikhathi ngu-12ms, okubhekisela kumlayezo we-ICMP osuka kukhompuyutha yami uye kuseva ye-Baidu edingekayo ukubambezeleka kwesikhathi sohambo ngu-12ms;

(I-Ping ibhekisela emuva naphambili lapho iphakethe lithunyelwa lisuka kudivayisi yomsebenzisi liyiswa endaweni yokulinganisa isivinini, bese libuyiselwa ngokushesha kudivayisi yomsebenzisi. Okusho ukuthi, okuvame ukwaziwa ngokuthi ukubambezeleka kwenethiwekhi, kubalwa nge-millisecond ms.）

Ukubambezeleka kwenethiwekhi kufaka izingxenye ezine: ukubambezeleka kokucubungula, ukubambezeleka komugqa, ukubambezeleka kokudlulisela kanye nokulibaziseka kokusabalalisa. Empeleni, sibheka ikakhulukazi ukubambezeleka kokudlulisela kanye nokubambezeleka kokudlulisela.

3.Nyakazisa

: i-network jitter isho umehluko wesikhathi phakathi kokubambezeleka okukhulu kanye nokubambezeleka okuncane. Isibonelo, ukubambezeleka okukhulu uma uvakashela iwebhusayithi ngu-10ms, futhi ukubambezeleka okuncane ngu-5ms, bese i-jitter yenethiwekhi ingu-5ms; i-jitter = ukubambezeleka okukhulu-ukubambezeleka okuncane, ukuzamazama = ukubambezeleka okukhulu-ukubambezeleka okuncane

shake ingasetshenziswa ukuhlola ukuzinza kwenethiwekhi, i-jitter encane, inethiwekhi izinzile;

Ikakhulukazi uma sidlala imidlalo, sidinga ukuthi inethiwekhi ibe nokuzinza okuphezulu, ngaphandle kwalokho izothinta isipiliyoni segeyimu.

Mayelana nembangela ye-jitter yenethiwekhi: uma ukuminyana kwenethiwekhi kwenzeka, ukubambezeleka komugqa kuzothinta ukubambezeleka kokuphela, okungabangela ukubambezeleka ngokuzumayo okukhulu nokuncane kusuka ku-router A kuya ku-router B, okuholela ku-jitter yenethiwekhi;

4.Ukulahlekelwa kwephakethe

: Kalula nje, ukulahlekelwa kwephakethe kusho ukuthi idatha yephakethe ledatha elilodwa noma amaningi ayikwazi ukufinyelela lapho kuthunyelwa khona ngenethiwekhi. Uma umamukeli ethola ukuthi idatha ilahlekile, uzothumela isicelo kumthumeli ngokwenombolo ye-serial yomugqa ukuze aqhube ukulahleka kwephakethe kanye nokudluliswa kabusha.

Kunezizathu eziningi zokulahlekelwa amaphakethe, okuvame kakhulu kungaba ukuminyana kwenethiwekhi, ithrafikhi yedatha inkulu kakhulu, imishini yenethiwekhi ayikwazi ukuphatha ngokwemvelo amanye amaphakethe wedatha azolahleka.

Izinga lokulahlekelwa kwephakethe isilinganiso senani lamaphakethe alahlekile ekuhlolweni kuya kumaphakethe athunyelwe. Isibonelo, uma uthumela amaphakethe ayi-100 futhi ulahlekelwe iphakethe elilodwa, izinga lokulahlekelwa kwephakethe ngu-1%.