{"id":33434,"date":"2019-10-31T21:52:33","date_gmt":"2019-10-31T18:52:33","guid":{"rendered":"https:\/\/prohoster.info\/blog\/kak-rabotaet-szhatie-v-obektno-orientirovannoj-arhitekture-pamyati\/"},"modified":"2019-10-31T21:52:33","modified_gmt":"2019-10-31T18:52:33","slug":"kak-rabotaet-szhatie-v-obektno-orientirovannoj-arhitekture-pamyati","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/administrirovanie\/kak-rabotaet-szhatie-v-obektno-orientirovannoj-arhitekture-pamyati","title":{"rendered":"Si funksionon kompresimi n\u00eb arkitektur\u00ebn e kujtes\u00ebs orientuar nga objektet","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Ekipa e inxhinier\u00ebve nga MIT zhvilloi nj\u00eb hierarki objektesh t\u00eb orientuar n\u00eb memorie p\u00ebr nj\u00eb pun\u00eb m\u00eb efikase me t\u00eb dh\u00ebnat. N\u00eb artikull, shqyrtojm\u00eb si \u00ebsht\u00eb nd\u00ebrtuar ajo.<\/p>\n

\"Si<\/a><\/noindex><\/a><\/noindex>
\n\/ PxHere<\/noindex> \/ PD<\/i><\/p>\n

Si\u00e7 dihet, rritja e performanc\u00ebs s\u00eb CPU-ve moderne nuk shoq\u00ebrohet me nj\u00eb ulje t\u00eb ngjashme t\u00eb vones\u00ebs gjat\u00eb aksesit n\u00eb memorie. Dallimi n\u00eb ndryshimin e treguesve nga viti n\u00eb vit mund t\u00eb arrij\u00eb deri n\u00eb 10 her\u00eb (PDF, fq.3<\/a><\/noindex>). Si rezultat, shfaqet nj\u00eb shishe qafe q\u00eb nuk lejon p\u00ebrdorimin e plot\u00eb t\u00eb burimeve t\u00eb disponueshme dhe ngadal\u00ebson p\u00ebrpunimin e t\u00eb dh\u00ebnave.<\/p>\n

D\u00ebmi n\u00eb performanc\u00eb shkaktohet nga ajo q\u00eb quhet vonesa e dekompresimit. N\u00eb disa raste, p\u00ebrgatitja e dekompresimit t\u00eb t\u00eb dh\u00ebnave mund t\u00eb marr\u00eb deri n\u00eb 64 cikle procesori. <\/p>\n

P\u00ebr krahasim: mbledhja dhe shum\u00ebzimi i numrave me pik\u00eb lundruese z\u00ebn\u00eb<\/a><\/noindex> jo m\u00eb shum\u00eb se dhjet\u00eb cikle. Problemi \u00ebsht\u00eb se memoria punon me blloqe t\u00eb dh\u00ebnash me p\u00ebrmas\u00eb fikse, nd\u00ebrsa aplikacionet operojn\u00eb me objekte q\u00eb mund t\u00eb p\u00ebrmbajn\u00eb lloje t\u00eb ndryshme t\u00eb t\u00eb dh\u00ebnave dhe t\u00eb dallohet nga nj\u00ebra-tjetra n\u00eb madh\u00ebsi. P\u00ebr t\u00eb zgjidhur problemin, inxhinier\u00ebt e MIT zhvilluan nj\u00eb hierarki memorjeje orientuar ndaj objekteve, e cila optimizon p\u00ebrpunimin e t\u00eb dh\u00ebnave.<\/p>\n

Si funksionon teknologjia<\/h2>\n

\nN\u00eb baz\u00eb t\u00eb zgjidhjes jan\u00eb tri teknologji: Hotpads, Zippads dhe algoritmi i kompresimit COCO.<\/p>\n

Hotpads \u00ebsht\u00eb nj\u00eb hierarki e memorie regjistrash t\u00eb menaxhuar nga softueri (scratchpad<\/a><\/noindex>). K\u00ebto regjistra quhen pads dhe ka tre prej tyre \u2014 nga L1 n\u00eb L3. N\u00eb to ruhen objekte t\u00eb ndryshme p\u00ebrmasash, metadatat dhe vargjet e treguesve.<\/p>\n

N\u00eb thelb, arkitektura p\u00ebrfaq\u00ebson nj\u00eb sistem cachesh, por t\u00eb orientuar p\u00ebr t\u00eb punuar me objekte. Niveli i padit ku ndodhet objekti varet nga sa shpesh p\u00ebrdoret. N\u00ebse nj\u00eb nga nivelet \u00abmbushet\u00bb, sistemi aktivizon nj\u00eb mekaniz\u00ebm t\u00eb ngjash\u00ebm me \u00abmbledh\u00ebsit e mbetjeve\u00bb n\u00eb gjuh\u00ebt Java ose Go. Ai analizon cilat objekte p\u00ebrdoren m\u00eb pak se t\u00eb tjerat dhe automatikisht i zhvendos ato midis niveleve.<\/p>\n

Zippads punon mbi baz\u00ebn e Hotpads - arkivon dhe dezherkon t\u00eb dh\u00ebna q\u00eb hyjn\u00eb ose dalin nga dy nivelet e fundit t\u00eb hierarkis\u00eb - padi L3 dhe memorien kryesore. N\u00eb padat e para dhe t\u00eb dyta, t\u00eb dh\u00ebnat ruhen n\u00eb form\u00eb t\u00eb pandryshuar.<\/p><\/blockquote>\n

\n \"Si
\n
\nZippads tkurr objekte q\u00eb nuk i tejkalojn\u00eb 128 byte. Objekte m\u00eb t\u00eb m\u00ebdha ndahen n\u00eb pjes\u00eb, t\u00eb cilat m\u00eb pas vendosen n\u00eb zona t\u00eb ndryshme t\u00eb memories. Si\u00e7 thon\u00eb zhvilluesit, ky qasje rrit koeficientin e memorie s\u00eb p\u00ebrdorur efektivisht.<\/p>\n

P\u00ebr tkurrjen e objekteve aplikohet algoritmi COCO (Cross-Object COmpression), p\u00ebr t\u00eb cilin do t\u00eb flasim m\u00eb tej, edhe pse sistemi \u00ebsht\u00eb i aft\u00eb t\u00eb punoj\u00eb edhe me Base-Delta-Immediate<\/a><\/noindex> ose FPC<\/a><\/noindex>. Algoritmi COCO \u00ebsht\u00eb nj\u00eb form\u00eb e tkurrjes diferenciale (differential compression<\/a><\/noindex>). Ai krahason objektet me \"bazat\" dhe heq bit\u00ebt e p\u00ebrs\u00ebritur - shih skem\u00ebn m\u00eb posht\u00eb:<\/p>\n

\"Si<\/p>\n

Sipas inxhinier\u00ebve nga MIT, hierarkia e tyre objekt-orientuese e memories \u00ebsht\u00eb 17% m\u00eb efikase se qasjet tradicionale. Ajo \u00ebsht\u00eb shum\u00eb m\u00eb af\u00ebr arkitektur\u00ebs s\u00eb aplikacioneve moderne, prandaj metoda e re ka potencial.<\/p>\n

Pritet e paraqitet q\u00eb teknologjit\u00eb do t\u00eb fillojn\u00eb t'i p\u00ebrdorin fillimisht kompanit\u00eb q\u00eb punojn\u00eb me t\u00eb dh\u00ebna t\u00eb m\u00ebdha dhe algoritme t\u00eb m\u00ebsimit t\u00eb makinerive. Nj\u00eb drejtim tjet\u00ebr potencial \u00ebsht\u00eb platformat cloud. Ofruesit e IaaS do t\u00eb ken\u00eb mund\u00ebsi t\u00eb punojn\u00eb m\u00eb efikas me virtualizimin, sistemet e ruajtjes s\u00eb t\u00eb dh\u00ebnave dhe resurset llogarit\u00ebse.<\/p>\n

Burimet dhe burimet tona shtes\u00eb:<\/b><\/p>\n

\"Si \u00abSi nd\u00ebrtuam IaaS\u00bb: materiale mbi pun\u00ebn e 1cloud<\/a><\/noindex><\/p>\n

\"Si Evolucioni i arkitektur\u00ebs cloud 1cloud<\/a><\/noindex>
\n\"Si Sh\u00ebrbimi i ruajtjes objektive n\u00eb 1cloud<\/a><\/noindex><\/p>\n

\"Si Sulmet potenciale ndaj HTTPS dhe m\u00ebnyrat p\u00ebr t'u mbrojtur nga to<\/a><\/noindex>
\n\"Si Si i ngjajn\u00eb dhe si ndryshojn\u00eb qasjet e Continuous Delivery dhe Continuous Integration<\/a><\/noindex>
\n\"Si Si t\u00eb mbrojm\u00eb nj\u00eb server n\u00eb internet: p\u00ebrvoja e 1cloud<\/a><\/noindex><\/p><\/blockquote>\n

Burimi: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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