Video: Cache block yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
cache thaiv - Lub hauv paus unit rau cache khaws cia. Tej zaum yuav muaj ntau bytes / lo lus ntawm cov ntaub ntawv. cache kab - Ib yam li cache thaiv . tag - Tus cim tshwj xeeb rau ib pawg ntawm cov ntaub ntawv. Vim hais tias txawv cheeb tsam ntawm lub cim xeeb tej zaum yuav mapped rau hauv ib thaiv , tag yog siv los sib txawv ntawm lawv.
Hauv qhov no, yuav ua li cas thaiv qhov thaiv hauv lub cache?
Thaum CPU sim nyeem los ntawm lub cim xeeb, qhov chaw nyob yuav raug xa mus rau a cache tus tswj. - Qhov qis tshaj k cov khoom ntawm qhov chaw nyob yuav ntsuas a thaiv hauv cache . - Yog tias thaiv yog siv tau thiab lub cim npe sib tw rau sab sauv (m - k) cov khoom ntawm m-ntsis chaw nyob, ces cov ntaub ntawv yuav raug xa mus rau CPU.
Tsis tas li ntawd, cache block loj npaum li cas hauv cov lus? 1 Teb. Hauv qhov piv txwv qhov cache block loj yog 32 bytes , i.e., byte-addressing yog siv; nrog cov lus plaub-byte, qhov no yog 8 lo lus.
Tsis tas li ntawd, muaj pes tsawg blocks nyob rau hauv ib lub cache?
Teb. Vim tias muaj 16 bytes hauv a cache thaiv , OFFSET teb yuav tsum muaj 4 khoom (24 = 16). Txhawm rau txiav txim siab tus lej ntawm cov khoom hauv SET teb, peb yuav tsum txiav txim siab tus lej ntawm cov teeb tsa. Txhua set muaj 2 cache blocks (2-txoj kev associative) yog li ib txheej muaj 32 bytes.
Dab tsi yog cache associativity?
Ib tug tag nrho associative cache tso cai cov ntaub ntawv khaws cia rau hauv ib qho twg cache thaiv, es tsis txhob yuam txhua qhov chaw nco mus rau hauv ib qho tshwj xeeb thaiv. - Thaum cov ntaub ntawv tau txais los ntawm lub cim xeeb, nws tuaj yeem muab tso rau hauv ib qho thaiv tsis siv ntawm qhov cache.
Pom zoo:
Block CSS yog dab tsi?
Block-level Elements Ib qho kev thaiv-theem ib txwm pib ntawm txoj kab tshiab thiab siv tag nrho qhov dav muaj (tawm mus rau sab laug thiab sab xis kom deb li deb tau). Lub ntsiab yog ib qho thaiv-theem element. Piv txwv ntawm block-level hais:
Dab tsi yog niaj hnub block cipher?
Lus Txhais • Ib tug symmetric tseem ceeb niaj hnub thaiv cipher encrypts ib n-ntsis thaiv ntawm plaintext los yog decrypts ib n-ntsis thaiv ntawm ciphertext. • Lub encryption lossis decryption algorithm siv tus yuam sij k-ntsis
Dab tsi yog block qib cim npe hauv HTML?
Ib qho thaiv-theem theem tuaj yeem nqa ib kab lossis ntau kab thiab muaj kab tawg ua ntej thiab tom qab lub ntsiab. Lwm cov piv txwv ntawm block-theem tagare: Cov cim npe rau Daim Ntawv Teev Npe (Ordered, Unordered, Description and List Item) tags
Dab tsi yog lub ntsiab lus ntawm linear block code?
'Ib txoj kab thaiv kab thaiv yog ib txoj kab thaiv thaiv uas qhov tshwj xeeb-lossis ntawm ob lub ntsiab lus ua rau lwm lo lus
Dab tsi yog siv los txiav txim seb ib daim ntawm cov ntaub ntawv hauv cache yuav tsum tau sau rov qab rau cache?
Lub ntsis kuj qhia txog qhov cuam tshuam thaiv ntawm kev nco uas tau hloov kho thiab tsis tau khaws cia rau hauv storageyet. Li no, yog tias ib daim ntawm cov ntaub ntawv hauv cache yuav tsum tau sau rov qab rau cache qhov qias neeg yuav tsum tau teeb tsa 0. Dirtybit = 0 yog cov lus teb