Incazelo ye-Hard Drive's Search Time
Isikhathi sokufuna yisikhathi esithatha ingxenye ethile yemishini ye-hardware ukuthola indawo ethile yolwazi kudivayisi yesitoreji. Leli xabiso livame ukuboniswa ngamamillisecond (ms), lapho inani elincane libonisa isikhathi sokufuna ngokushesha.
Yini okufunayo isikhathi akuyona ukuthi inani eliphelele lithatha ukukopisha ifayela kwenye i-hard drive, ukulanda idatha kusuka ku-intanethi, ukushisa okuthile kwi-disc, njll. Nakuba isikhathi sokufuna sithatha indima esikhathini esithathayo ukuqedela imisebenzi efana nalezi, cishe kungafanelekile uma kuqhathaniswa nezinye izici.
Funa isikhathi esivame ukubizwa ngokuthi isikhathi sokufinyelela , kodwa empeleni isikhathi sokufinyelela sithatha isikhathi esiningi kunesikhathi sokufuna ngoba kukhona isikhathi esincane se-latency phakathi kokuthola idatha bese ngempela siyifinyelela.
Yini Enquma Ukufuna Isikhathi?
Isikhathi sokufuna se- hard drive yisikhathi sithatha isikhathi somhlangano wekhanda we-hard drive (esetshenziselwa ukufunda / ukubhala idatha) ukuze ube nengalo yayo ye-actuator (lapho amakhanda afakwe khona) abekwe endaweni efanele ethrekhi (lapho idatha empeleni igcinwe) ukuze ufunde / ubhale idatha emkhakheni othile we disk.
Njengoba ukuhambisa ingalo yesikhanyisi kuwumsebenzi ongokwenyama owenza isikhathi sokuqedela, isikhathi sokufuna singase sisondele ngokushesha uma indawo yekhanda isivele isendleleni efanele, noma impela isikhathi eside uma ikhanda lizodlulela endaweni ehlukile.
Ngakho-ke, isikhathi sokufuna i-hard drive siyalinganiswa nesikhathi sokufunwa saso esijwayelekile ngoba akuwona wonke ama-hard drive azohlala enomhlangano oyinhloko endaweni efanayo. Isikhathi sokufuna isilinganiso esiphezulu se-hard drive ngokuvamile sibalwa ngokulinganisa ukuthi kuthatha isikhathi eside kangakanani ukubuka idatha ngaphezu kwengxenye yesithathu yamathrekhi we-hard drive.
Ithiphu: Bheka ikhasi 9 lale PDF kusuka kuwebhusayithi yeYunivesithi yaseWisconsin ukuthola imininingwane ethile yezibalo ekusebenziseni isikhathi sokufuna isilinganiso.
Yize isilinganiso esivamile sokufuna isikhathi kuyindlela ejwayelekile kakhulu yokulinganisa leli xabiso, lingenziwa nangezinye izindlela ezimbili futhi: ukulandelela-ukulandelela nokushaya okugcwele . I-Track-to-track ingakanani isikhathi esithathayo ukusesha idatha phakathi kwamathrekhi amabili aseduze, ngenkathi uhlangothi olugcwele kungakanani isikhathi esithathayo ukuze ufune lonke ubude be disk, kusukela emgodini wangaphakathi kuze kube yilapho ungaphandle.
Amanye amadivaysi okugcina amabhizinisi anezinkinobho ezinzima ezinamabomu amancane ngamandla ukuze kube namathrekhi amancane, bese evumela i-actuator ibanga elifushane ukuhamba phakathi kwamathrekhi. Lokhu kubizwa ngokuthi i- stroking efushane .
Lezi zinkulumo ezinzima ze-drive zingase zingajwayelekile futhi zidideke ukulandela, kodwa konke okudingayo ngempela ukuthi isikhathi sokufuna se-hard drive yisikhathi sithatha idrayivu ukuthola idatha esibhekile, ngakho-ke inani elincane limelela isikhathi sokufuna ngokushesha kunokukhulu.
Funa Izibonelo Zezikhathi Ze-Hardware Ejwayelekile
Isilinganiso sifuna isikhathi sezindiza ezinzima siye sathuthuka kancane kancane ngokuhamba kwesikhathi, neyokuqala (IBM 305) sinesikhathi sokufuna cishe 600 ms. Emashumini eminyaka kamuva kwabona isikhathi sokufuna i-HDD esingaba ngu-25 ms. Ukushayela okunzima kanzima kungase kube nesikhathi sokufuna cishe 9 ms, amadivaysi eselula 12 ms, nezinsizakalo ezisezingeni eliphezulu ezine-4 ms ngesikhathi sokufuna.
Izinkinobho ezinzima eziqinile (SSDs) azinawo izingxenye ezihambayo njengamashayela ajikelezayo, ngakho-ke izikhathi zabo zokufuna zilinganiswa kancane, futhi ama-SSD amaningi anesikhathi sokufuna phakathi kuka-0.08 no-0.16 ms.
Amanye ama-hardware, afana ne -disc optical drive ne- floppy disk drive , enenhloko enkulu kune-hard drive futhi ngakho-ke ube nezikhathi zokufuna kancane. Isibonelo, ama-DVD nama-CD anesikhathi sokufuna isilinganiso esiphakathi kwama-65 ms no-75 ms, okuhamba kancane kakhulu kunalokho okushayela.
Ingabe Ufuna Isikhathi Ngempela Konke Okubalulekile?
Kubalulekile ukuqaphela ukuthi ngenkathi isikhathi sokufuna sidlala indima ebalulekile ekunqumeni isivinini esikhulu sekhompyutheni noma enye idivayisi, kunezinye izingxenye ezisebenza ngokubaluleka okufana nokubaluleka okufanayo.
Ngakho-ke uma ubheka ukuthola i-hard drive entsha ukusheshisa ikhompyutha yakho, noma ukuqhathanisa amadivaysi amaningi ukuze ubone ukuthi yikuphi okusheshayo, khumbula ukucabangela ezinye izici ezifana nenkumbulo yesistimu , i- CPU , uhlelo lwefayela , nesofthiwe eqhubekayo idivayisi.
Isibonelo, isikhathi esiphezulu esithatha ukwenza into efana nokulanda ividiyo kusuka kwi-intanethi ayinakho konke okwenzayo ngesikhathi sokufuna se-hard drive. Yiqiniso kuyilapho isikhathi sokulondoloza ifayela ku-disk sincike esikhathini esithile sokufuna, njengoba kunikezwa ukuthi i-hard drive ayisebenzi ngokushesha, esimweni esinjengaleli uma ulanda amafayela, isivinini esiphezulu sithonywa kakhulu yi- bandwidth yenethiwekhi.
Umqondo ofanayo usebenza kwezinye izinto ozenzayo njengokuguqula amafayela , ukukhipha amaDVD ku-hard drive, nemisebenzi efanayo.
Ungayithuthukisa i-HDD & # 39; s Isikhathi Sokufuna?
Nakuba ungenakukwenza noma yini ukusheshisa izakhiwo zomzimba wedrayivu eyinkimbinkimbi ukuze ukwandise isikhathi saso sokufuna, kunezinto ongayenza ukuze uthuthukise ukusebenza jikelele. Lokhu kungenxa yokuthi isikhathi sokufuna idrayivu yodwa akuyona into kuphela ekhomba ukusebenza.
Isibonelo esisodwa ukunciphisa ukuhlukaniswa ngokusebenzisa ithuluzi le-defrag yamahhala . Uma izingcezu zefayili zisakaze konke mayelana ne-hard drive ezicucini ezihlukene, kuzothatha isikhathi esengeziwe sokuba idrayivu eyinkimbinkimbi ukuyiqoqa futhi ibahlele esiqeshini esiqinile. Ukwehlisa amandla idrayivu kungahlanganisa la mafayela ahlukaniswe ukuze kuthuthukiswe isikhathi sokufinyelela.
Ngaphambi kokuphazamiseka, ungase ucabange ngisho nokususa amafayela angasetshenzisiwe njengama-caches wesiphequluli, ukuxosha i-Recycle Bin, noma ukusekela idatha isistimu yokusebenza ayisebenzisi, noma ngabe ithuluzi lokusekelayo lamahhala noma isevisi yokulondoloza inthanethi . Ngale ndlela i-hard drive ngeke kudingeke ukuba ihlukanise yonke leyo datha njalo lapho idinga ukufunda noma ukubhala okuthile kwi disk.