Ukuba sisebenzisa esona sikweko siqhelekileyo, umsebenzi wokutshintsha kukwahlula izibuko lothungelwano libe ngamazibuko amaninzi othungelwano losasazo lwedatha, njengokuphambukisa amanzi ukusuka kumbhobho wamanzi omnye ukuya kwimibhobho yamanzi emininzi ukuze abantu abaninzi basebenzise.
"Ukuhamba kwamanzi" ahanjiswe kwinethiwekhi yidatha, equlunqwe ngeepakethi zedatha nganye.Ukutshintshwa kufuneka kuqhutywe ipakethe nganye, ngoko ke i-bandwidth ye-backplane yokutshintshwa ngumthamo ophezulu wokutshintsha idatha, kwaye isantya sokudlulisa ipakethe yikhono lokucubungula ukufumana idatha kwaye emva koko uyithumele.
Amaxabiso amakhulu okutshintsha i-backplane bandwidth kunye nereyithi yokuthumela ipakethe, amandla okusebenza kwedatha anamandla, kunye nexabiso eliphezulu lokutshintsha.
Ibhanwidth ye-backplane:
I-Bandplane bandwidth ikwabizwa ngokuba yi-backplane umthamo, ochazwa njengobuninzi bedatha enokuthi iphathwe ngesixhobo sojongano lokujongana, ikhadi le-interface kunye nebhasi yedatha yokutshintsha.Imele amandla otshintshiselwano lwedatha jikelele yokutshintsha, kwi-Gbps, ebizwa ngokuba yi-bandwidth yokutshintsha.Ngesiqhelo, i-backplane bandwidth sinokufikelela kuluhlu ukusuka kwiiGbps ezimbalwa ukuya kumakhulu ambalwa eGbps.
Izinga lokuthunyelwa kwepakethi:
Ireyithi yokuthumela ipakethe yokutshintsha, ekwabizwa ngokuba yi-port throughput, kukukwazi ukutshintshela kwiipakethi eziya phambili kwi-port ethile, ngokuqhelekileyo kwi-pps, ebizwa ngokuba yi-packets ngesekhondi, inani leepakethi ezithunyelwa ngomzuzwana.
Nantsi inethiwekhi yengqondo eqhelekileyo: Idata yenethiwekhi ihanjiswa ngeepakethi zedatha, ezibandakanya idatha egqithisiweyo, iiheader zesakhelo, kunye nezithuba zesakhelo.Ubuncinci obufunekayo kwipakethi yedatha kwinethiwekhi yi-64 bytes, apho i-64 bytes yidatha ecocekileyo.Ukongeza i-header yefreyimu ye-8-byte kunye ne-gap yefreyimu ye-12-byte, ipakethe encinci kwinethiwekhi yi-84 bytes.
Ke xa ujongano olupheleleyo lwe-duplex yegigabit lufikelela kwisantya somgca, isantya sokuhambisa ipakethi si
=1000Mbps/((64+8+12) * 8bit)
=1.488Mpps.
Ubudlelwane phakathi kwezi zimbini:
I-bandwidth ye-backplane yokutshintsha imele umthamo opheleleyo wokutshintshiselana kwedatha yokutshintsha kwaye kwakhona isalathisi esibalulekileyo sezinga lokuthunyelwa kwepakethi.Ke i-backplane inokuqondwa njengebhasi yekhompyuter, kwaye okukhona i-backplane iphezulu, kokukhona isomelele isakhono sayo sokucwangcisa idatha, okuthetha ukuba phezulu kwereyithi yokuthumela ipakethi.
Ixesha lokuposa: Jul-17-2023