Video: Yuav ua li cas luam ntawm sau nrog kev hwm rau lub cim xeeb virtual?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Copy-on-write pom nws lub ntsiab siv hauv virtual nco kev khiav hauj lwm systems; thaum tus txheej txheem tsim ib luam ntawm nws tus kheej, cov nplooj ntawv hauv nco uas tej zaum yuav raug hloov los ntawm tus txheej txheem los yog nws luam raug cim luam-on-write.
Yog li ntawd, qhov kev luam ntawm kev sau ntawv txhais li cas?
" Luam rau sau " txhais tau tias ntau los yog tsawg dua li nws suab zoo li: txhua tus muaj ib qho kev sib koom luam ntawm tib cov ntaub ntawv kom txog thaum nws tau sau, thiab tom qab ntawd a luam yog ua. Feem ntau, luam-on-write yog siv los daws cov teeb meem concurrency.
Kuj Paub, qhov txiaj ntsig ntawm kev luam ntawv yog dab tsi? Copy-on-write pom nws txoj kev siv tseem ceeb hauv kev sib koom lub cim xeeb virtual ntawm cov txheej txheem kev ua haujlwm, hauv kev siv lub fork system hu. Feem ntau, cov txheej txheem tsis hloov kho ib qho kev nco thiab ua tiav cov txheej txheem tshiab tam sim ntawd, hloov qhov chaw nyob tag nrho.
Ib yam li ib tug yuav nug, dab tsi yog lub cim xeeb virtual nrog daim duab?
Operating System - Virtual Memory . Kev tshaj tawm. Lub computer tuaj yeem hais ntau dua nco tshaj tus nqi ntawm lub cev nruab rau hauv lub cev. Qhov no ntxiv nco yog hu ua virtual nco thiab nws yog ib feem ntawm lub hard disk uas tau teeb tsa los ua raws li lub computer lub RAM.
Koj siv daim ntawv luam li cas rau kev sau ntawv?
Rau siv luam-on-write , ib tug ntse pointer rau cov ntsiab lus tiag yog siv los encapsulate cov khoom tus nqi, thiab nyob rau txhua qhov kev hloov kho cov khoom siv suav suav; yog hais tias cov khoom siv ntau tshaj ib zaug, a luam ntawm cov ntsiab lus yog tsim ua ntej kev hloov kho.
Pom zoo:
Lub cim xeeb tseem ceeb thiab lub cim xeeb thib ob yog dab tsi muab piv txwv?
Lub cim xeeb thib ob muaj nyob rau hauv ntau thiab ib txwm loj dua lub cim xeeb thawj. Lub khoos phis tawj tuaj yeem ua haujlwm yam tsis muaj lub cim xeeb thib ob raws li nws lub cim xeeb sab nraud. Cov piv txwv ntawm lub cim xeeb thib ob yog lub hard disk, floppy disk, CD, DVD, thiab lwm yam
Qhov twg hauv qab no yog suav tias yog kev tswj hwm kev ua haujlwm ntawm kev tswj hwm database DBMS)?
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Yuav ua li cas cov kev pab cuam loaded rau hauv lub cim xeeb?
Kev thauj khoom ib qho kev pab cuam yuav tsum tau nyeem cov ntsiab lus ntawm cov ntaub ntawv executable uas muaj cov lus qhia kev pab cuam rau hauv lub cim xeeb, thiab tom qab ntawd ua lwm yam haujlwm uas yuav tsum tau npaj los npaj cov haujlwm ua haujlwm