Kodi Ma Algorithms Omwe Amagwiritsidwa Ntchito pa SSD vs HDD Ndi Chiyani?
2024-09-19 14:17:26
Ma Solid State Drives (SSD) ndi Hard Disk Drives (HDD) ali ndi matekinoloje apadera, ndipo njira zomwe amagwiritsa ntchito posungirako, kubweza deta, ndi kukhathamiritsa kwa magwiridwe antchito zimasiyana kwambiri.
M'ndandanda wazopezekamo
1. SSD (Solid State Drive) Ma algorithms
Ma SSD amagwiritsa ntchito kukumbukira kwa flash yochokera ku NAND, ndipo ma aligorivimu amapangidwa kuti apititse patsogolo liwiro, mavalidwe, komanso moyo wautali wa chipangizocho. Ena mwa ma algorithms akuluakulu ndi awa:
Vala leveling:
Cholinga: Kumawonetsetsa kuti zolembera / kufufuta zimamwazikana mofanana pakati pa ma cell onse okumbukira, kuletsa kuvala msanga pa cell iliyonse.
Momwe Imagwirira Ntchito: Njirayi imayang'ana nthawi zonse kuti ndi ziti zokumbukira zomwe zimagwiritsidwa ntchito kwambiri ndikugawanso deta kuti zisagwiritse ntchito mopitilira muyeso.
Kusonkhanitsa Zinyalala
Cholinga: Kuchotsa deta yolakwika (kapena deta yolembedwa kuti ichotsedwe) kuchokera ku midadada kumasula malo ndikuwongolera liwiro.
Momwe Imagwirira Ntchito: Pamene chipika cha kukumbukira chili ndi deta yovomerezeka komanso yosavomerezeka, njira yosonkhanitsira zinyalala imagwirizanitsa deta yovomerezeka mu chipika chimodzi ndikumasula midadada ina kuti isungidwe zatsopano.
TRIM:
Cholinga: Amalumikizana ndi SSD zomwe midadada ya data sagwiritsidwanso ntchito ndipo imatha kufufutidwa, motero kufulumizitsa kulemba ntchito.
Momwe zimagwirira ntchito: Deta ikawonongeka, makina ogwiritsira ntchito amatumiza malangizo a TRIM ku SSD, kuwalola kufufuta midadada yosankhidwa pasadakhale, kuchepetsa kulemba latency.
Khodi Yokonza Zolakwa (ECC):
Cholinga: Kuzindikira ndikukonza zolakwika za data zomwe zitha kuchitika powerenga / kulemba.
Momwe zimagwirira ntchito: Ma SSD amagwiritsa ntchito njira zowongolera zolakwika kuti zitsimikizire kuti detayo ndi yolondola, popeza ma cell a kukumbukira a NAND amatha kukhala ndi zolakwika pang'ono.
Kupereka mopitilira muyeso:
Cholinga: Imagawa zosungirako zowonjezera kuti zithandizire kuwongolera mavalidwe, kutolera zinyalala, ndi magwiridwe antchito onse.
Momwe imagwirira ntchito: Njirayi imapereka kukumbukira kwina kowonjezera komwe sikuwoneka kwa wogwiritsa ntchito koma kumagwiritsidwa ntchito mkati ndi SSD kuyang'anira midadada yowonongeka ndikuwongolera magwiridwe antchito.
Kuwongolera Zoyipa:
Cholinga: Kuzindikiritsa ndikupatula midadada yolakwika.
Momwe zimagwirira ntchito: Ma SSD amayang'anira thanzi la midadada yokumbukira ndikuyika chilichonse chomwe chawonongeka ngati chosagwiritsidwa ntchito, kuwonetsetsa kuti zambiri sizilembedwera ku midadada iyi.
2. Ma algorithms a HDD (Hard Disk Drive).
Ma HDD amagwiritsa ntchito mbale zopota za maginito kusunga deta ndikuwerenga / kulemba mitu kuti apeze. Ma algorithms awo adapangidwa kuti aziwongolera momwe malo osungiramo amagwirira ntchito ndikuwongolera magwiridwe antchito. Ma algorithms ofunikira ndi awa:
Ma algorithms a Disk Schedule:
Cholinga:
Imakulitsa dongosolo lomwe magawo a disk amafikirako kuti achepetse nthawi yofunafuna komanso kuchedwa kozungulira.
Zitsanzo:
Elevator (SCAN) Algorithm: Imasuntha mutu wowerengera / kulemba mbali imodzi mpaka kukafika kumapeto kwa diski musanabwerere, kuchepetsa nthawi yofunafuna.
Nthawi Yaifupi Kwambiri Yofufuza (SSTF): Imayika patsogolo zopempha zomwe zili pafupi kwambiri ndi mutu wapano kuti muchepetse nthawi yofunafuna.
Woyamba Kubwera, Woyamba Kutumikira (FCFS): Imakonza zopempha mu dongosolo lomwe afika, ngakhale izi sizothandiza kwenikweni ngati SSTF kapena SCAN.
Lembani Caching:
Cholinga: Kupititsa patsogolo ntchito yolemba posunga kwakanthawi mu cache musanalembe ku diski.
Momwe zimagwirira ntchito: Deta imalembedwa ku kukumbukira kothamanga kothamanga koyamba, kenako kulembedwa ku disk yozungulira pang'onopang'ono m'magulu, kuchepetsa nthawi yonse yofunikira polemba ntchito.
Read-Ahead Caching (Prefetching):
Cholinga: Kupititsa patsogolo ntchito yowerenga podziwiratu zomwe zidzafunsidwe zamtsogolo ndikuwerenga zomwe zili mu cache isanapemphedwe.
Momwe zimagwirira ntchito: Kutengera njira zofikira, ma algorithm amalozeratu data kuchokera kumagulu oyandikana nawo kapena amatsata posungira kuti achepetse kuchedwa kwa kuwerenga.
Kuzindikira ndi kukonza zolakwika (ECC):
Cholinga: Zimatsimikizira kukhulupirika kwa data yomwe yasungidwa pa disk.
Momwe zimagwirira ntchito: Ma HDD amagwiritsa ntchito ma aligorivimu a ECC kuti azindikire ndi kukonza zolakwika zomwe zingachitike chifukwa cha kusokoneza kwa maginito kapena kuvala kwa mbale.
Kukonzanso Magawo Oyipa:
Cholinga: Kuwonetsetsa kukhulupirika kwa deta potumizanso zolemba kuchokera kumagulu oyipa kupita ku magawo ena.
Momwe imagwirira ntchito: HDD imasunga mndandanda wa magawo oyipa ndikugwiritsa ntchito magawo osungira kuti alowe m'malo mwawo, kuonetsetsa kuti deta yalembedwa kumadera odalirika a disk.
Defragmentation:
Cholinga: Kusanjanso data yogawika kuti iwongolere bwino kuwerenga ndi kulemba.
Momwe zimagwirira ntchito: Mafayilo akabalalika m'malo osiyanasiyana a disk (kugawikana), defragmentation algorithm imakonzanso deta kuti ikhale yolumikizana, kuchepetsa nthawi yofunafuna kuti mupeze mafayilo.
3.Chidule cha Kusiyana kwake
Ma algorithms a SSD amayang'ana kwambiri pakusintha kwa mavalidwe, kusonkhanitsa zinyalala, ndi kukonza zolakwika chifukwa cha kalembedwe komaliza ka kukumbukira kwa flash.
Ma algorithms a HDD amayang'ana kwambiri kukhathamiritsa kwamakina, monga kuchepetsa nthawi yofunafuna ndikusamalira kugawika kwa disk.
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