2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
FIFO khaws cov khoom uas nyuam qhuav ntxiv. LRU yog, feem ntau, muaj txiaj ntsig zoo dua, vim tias feem ntau cov khoom nco tau ntxiv ib zaug thiab tsis siv dua, thiab muaj cov khoom ntxiv thiab siv ntau zaus. LRU yog ntau dua yuav khaws cov khoom nquag siv hauv nco.
Qhov twg zoo dua ntawm FIFO thiab LRU nplooj hloov cov txheej txheem piav qhia?
FIFO muaj qhov ua tau zoo tshaj plaws. Nws muaj ntau nplooj faults (degenerates) thaum tus naj npawb ntawm nplooj ntawv nce. … Qhov no yuav siv sij hawm ntau zaus, vim nws sau ib nplooj ntawv hauv disk thiab coj nws rov qab rau hauv lub cim xeeb loj hauv ob kauj ruam. LRU yog lub algorithm zoo dua los siv rau hauv cov xwm txheej no.
Qhov txawv ntawm FIFO thiab LRU yog dab tsi?
LRU cache tshem tawm cov nkag nkag uas tau nkag tsawg kawg tsis ntev los no yog tias lub cache puv. FIFO tshem tawm qhov nkag uas tau ntxiv ua ntej(?)
LRU puas yog txoj cai hloov pauv zoo?
Raws li nrog caches, LRU yog txoj cai hloov pauv zoo. Muaj ob hom kev txhais chaw nyob: segmented thiab paged. Txhua tus muaj qhov zoo thiab qhov ob tuaj yeem ua ke los ua ib qho segmented, paged addressing scheme.
LRU puas zoo dua random?
Raws li ua ntej, LRU zoo dua rau cov caches methiab 2-random zoo dua rau cov caches loj. Associativities ntawm 1 thiab 2 tsis tshwm sim vim lawv yuav tsum zoo tib yam rau ob qho tib si algorithms.
Pom zoo:
Puas siab dua lossis qis dua snr zoo dua?
Yuav kom ua tiav qhov kev sib txuas txhim khu kev qha, theem teeb liab yuav tsum muaj ntau dua li lub suab nrov. Ib qho SNR ntau dua 40 dB yog suav tias yog qhov zoo tshaj plaws, qhov SNR qis dua 15 dB yuav ua rau qeeb, tsis muaj kev sib txuas.
Vim li cas kev phooj ywg zoo dua kev sib raug zoo?
Vim nws encompasses kev hlub tseem ceeb tshaj romance ua, kev phooj ywg coj koj txhua txoj kev hlub uas koj yuav xav tau. … Cov phooj ywg nyob ntawd rau koj thaum kev hlub tsis muaj, cov phooj ywg yuav tsis ua rau koj poob txawm tias kev hlub.
Yuav tsum zoo dua los yog zoo dua?
Re: muaj zoo dua thiab yuav tsum zoo Yuav tsum tau zoo dua yog ob qho tib si thiab txhais tau tias tib yam. Muaj qhov zoo dua yog qhov tseem ceeb thiab tawv dua li qhov yuav tsum tau ua, yog li feem ntau cov neeg siv cov qauv lus Askiv yuav tsum.
Qhov twg zoo dua fifo lossis lifo?
Key takeaway: FIFO thiab LIFO cia cov lag luam suav COGS txawv. Los ntawm kev xav txog se, FIFO yog qhov zoo dua rau cov lag luam nrog cov khoom lag luam tsis tu ncua, thaum LIFO zoo dua rau cov lag luam nrog nce nqi khoom. Cov tub ua lag luam puas nyiam LIFO lossis FIFO?
Rau kev nyeem tau zoo dua nws yog qhov zoo dua tias cov ntsiab lus mos txwv yog?
Kua koj cov ntsiab lus mos txwv symmetrical Yog ua tau Lub ntsiab lus, ib kab ib, ob kab ib, thiab lwm yam. Nws yooj yim dua ntawm lub qhov muag thiab yog li yooj yim ntawm tus nyeem. Thaum twg koj yuav tsum siv cov ntsiab lus mos txwv?
