Ƙayyade lokacin neman kundin Hard Drive
Lokacin neman lokaci shine lokacin da wani ɓangare na injiniyoyi na hardware su nemo wani yanki na bayani a kan na'urar ajiya. Wannan darajar tana yawanci aka bayyana a milliceconds (ms), inda ƙananan darajar ya nuna lokacin neman sauri.
Abin da lokaci nema ba shine yawan lokacin da zai buƙaci fayiloli zuwa wani rumbun kwamfutarka, sauke bayanai daga intanit, ƙona wani abu a diski, da dai sauransu. Duk da yake lokacin neman lokaci yana taka muhimmiyar rawa a cikin lokacin da yake daukan don kammala ayyukan kamar waɗannan, yana da kusan bazawa idan aka kwatanta da wasu dalilai.
Lokacin neman lokaci sau da yawa ana kiran samun damar lokaci , amma a gaskiya lokacin samun lokaci ya fi tsayi fiye da lokacin neman lokaci domin akwai ƙananan lokacin jinkirta tsakanin binciken bayanai sannan sannan kuma yana samun dama.
Abin da ke ƙayyade neman lokaci?
Lokaci nema don rumbun kwamfutarka shine adadin lokacin da ake buƙatar taron shugabannin rukuni (amfani da su don karantawa / rubuta bayanai) don samun sashin aikinsa (inda aka sanya shugabannin) a wuri mai kyau a waƙa (inda an riga an adana bayanai) don karantawa / rubuta bayanai zuwa wani sashe na faifai.
Tun lokacin da aka motsa hannun mai aiki shine aiki na jiki wanda ke da lokaci zuwa kammala, lokaci nema zai iya zama kusan nan take idan jagoran wurin ya riga ya kasance a hanya ta dama, ko kuma ya fi tsayi idan ya kamata ya koma wuri daban.
Sabili da haka, ana neman lokaci mai wuya don saurin lokaci don ba a kullun kowane rumbun kwamfutar ba zai zama shugabanci a wuri daya. Kusan yawan sauƙi na neman lokaci yana yawan ƙididdigewa ta kimanin tsawon lokacin da yake buƙatar neman bayanai game da kashi ɗaya bisa uku na waƙoƙi na hard drive.
Tukwici: Dubi shafi na 9 na wannan PDF daga Jami'ar Wisconsin don cikakkun bayanai game da lissafi akan ƙayyadadden ƙayyadaddun lokaci.
Kodayake matsakaicin neman lokaci shine hanyar da ta fi dacewa don auna wannan darajar, za'a iya yin shi a wasu hanyoyi guda biyu: waƙa da waƙa da cikakke fashe . Track-to-track ne yawan lokacin da yake buƙatar don bincika bayanai tsakanin waƙoƙi guda biyu, yayin da cikakke fashewa shine yawan lokacin da yake buƙatar neman ta cikin tsawon tsayin, daga waƙa ta ciki har zuwa mafi girma a cikin hanya.
Wasu kayan na'urorin ajiyar kayan aiki suna da ƙwaƙwalwar ƙwaƙwalwa waɗanda ke da ƙananan ƙananan ƙarfin aiki don haka akwai ƙananan waƙoƙi, baya barin mai yin aiki ya zama ɗan gajeren lokaci don motsawa cikin waƙoƙin. Wannan ake kira gajere .
Wadannan sharuddan kullun yana iya zama wanda ba a sani ba kuma abin damuwa su biyo baya, amma duk abinda kuke buƙatar sani shi ne lokacin neman lokaci don rumbun kwamfutarka shine yawan lokacin da yake ɗauka don neman bayanan da yake nema, saboda haka karamin darajar wakiltar lokaci ne mafi sauri fiye da wanda ya fi girma.
Nemo samfurori na lokaci na kayan aiki na kowa
Yawancin lokaci yana neman lokaci don tafiyar da aiki mai sauƙi an inganta shi a hankali, lokaci na farko (IBM 305) yana neman lokaci kimanin 600 ms. Bayan 'yan shekarun da suka gabata ya ga matsakaicin matsakaici na HDD yana neman lokaci don zama a kusa da 25 ms. Kwafi na yau da kullum na iya neman lokaci a kusa da 9 ms, na'urori na hannu 12 ms, da kuma masu amfani da ƙaura masu girma da ke kusa da 4 ms na lokacin neman.
Kasuwanci mai karfi (SSDs) ba su da motsi kamar sassa na tafiyarwa, don haka ana neman ƙayyadadden lokacin su, da mafi yawan SSDs suna neman lokaci tsakanin 0.08 da 0.16 ms.
Wasu kayan aiki, kamar na'urar diski na lasisi da kwakwalwar faifai , suna da girma fiye da rumbun kwamfutarka kuma don haka suna neman saurin lokaci. Alal misali, DVD da CD suna da matsakaicin neman lokaci tsakanin 65 ms da 75 ms, wanda ya fi dacewa da hankali fiye da na matsaloli.
Shin Bincike Lokaci Ya Karshe Duk Mahimmancin?
Yana da mahimmanci a gane cewa yayin da ake nema lokaci yana taka muhimmiyar rawa wajen ƙayyade yawan gudunmawar kwamfuta ko wani na'ura, akwai sauran abubuwan da suke aiki tare da su kamar yadda suke da mahimmanci.
Don haka idan kana neman samun sabon rumbun kwamfutarka don gaggauta kwamfutarka, ko don gwada na'urori masu yawa don ganin wanda shine mafi sauri, tuna da la'akari da wasu al'amura kamar ƙwaƙwalwar ajiyar kwamfuta , CPU , tsarin fayil , da software masu gujewa a kan na'urar.
Alal misali, yawan lokacin da yake ɗaukar yin wani abu kamar sauke bidiyon daga Intanit ba shi da yawa da za a yi tare da neman lokaci na rumbun kwamfutar. Duk da cewa yana da gaskiya cewa lokacin da za a ajiye fayil ɗin zuwa faifai yana dogara akan ɗan lokaci nema, ba cewa kullun ba ya aiki a lokaci-lokaci, a misali kamar wannan lokacin sauke fayiloli, yawan gudunmawa ya fi rinjaye ta hanyar hanyar sadarwa ta hanyar sadarwa.
Haka batun ya shafi wasu abubuwan da kake yi kamar canzawa fayiloli , dana DVD zuwa hard drive, da kuma ayyuka masu kama da juna.
Shin za ku iya inganta samfurin HDD & # 39; s Search Time?
Kodayake ba za ku iya yin wani abu don hanzarta kaya na kundin kwamfutarka ba don kara yawan lokacin nemansa, akwai abubuwa da za ku iya yi don inganta yawan aikin. Wannan shi ne saboda neman lokacin da kullun yake nema ba shine kawai hanyar da ke kayyade aikin ba.
Ɗaya daga cikin misalai shi ne don rage ƙaddamarwa ta amfani da kayan aiki na wucin gadi kyauta . Idan ƙididdigar fayil ɗin suna yada duk game da kwamfutarka a cikin rabuɗɗun guda, to zai dauki karin lokaci don rumbun kwamfutarka don tattarawa da tsara su cikin wani sashi mai ƙarfi. Ƙunƙidar ƙaddamar da drive zai iya ƙarfafa waɗannan fayilolin ɓangaren don inganta damar samun lokaci.
Kafin ka rabu da shi, ƙila ka yi la'akari da kawar da fayilolin da ba a yi amfani da su ba kamar cache-bincike, kwance na Maimaita Bin, ko tallafawa bayanan da tsarin aiki bai yi amfani da shi ta hanyar amfani ba, ko dai tare da kayan aiki na kyauta ko sabis na sabis na kan layi . Ta wannan hanya dirar ba za ta yi watsi da duk abin da ke cikin bayanai ba a duk lokacin da yake buƙatar karantawa ko rubuta wani abu zuwa faifai.