{"id":35585,"date":"2019-10-31T22:05:11","date_gmt":"2019-10-31T19:05:11","guid":{"rendered":"https:\/\/prohoster.info\/blog\/misrosoft-otkryl-kod-sistemy-raspredeleniya-pamyati-mimalloc\/"},"modified":"2019-10-31T22:05:11","modified_gmt":"2019-10-31T19:05:11","slug":"misrosoft-otkryl-kod-sistemy-raspredeleniya-pamyati-mimalloc","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/news\/misrosoft-otkryl-kod-sistemy-raspredeleniya-pamyati-mimalloc","title":{"rendered":"Microsoft hapi kodin e sistemit t\u00eb shp\u00ebrndarjes s\u00eb memories mimalloc","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Kompania Microsoft hap codin e bibliotek\u00ebs n\u00ebn licenc\u00ebn MIT mimalloc<\/a><\/noindex> me implementimin e sistemit t\u00eb shp\u00ebrndarjes s\u00eb memories, e krijuar fillimisht p\u00ebr komponent\u00ebt runtime t\u00eb gjuh\u00ebve Koka<\/a><\/noindex> dhe Lean<\/a><\/noindex>. Mimalloc \u00ebsht\u00eb i p\u00ebrshtatsh\u00ebm p\u00ebr t'u p\u00ebrdorur n\u00eb aplikacione standarde pa ndryshime n\u00eb kodin e tyre dhe mund t\u00eb veproj\u00eb si nj\u00eb z\u00ebvend\u00ebsim transparent i funksionit malloc. Mb\u00ebshtetet n\u00eb Windows, macOS, Linux, BSD dhe sisteme t\u00eb tjera si Unix.<\/p>\n

Ve\u00e7oria ky\u00e7e e mimalloc \u00ebsht\u00eb kompakt\u00ebsia e implementimit (m\u00eb pak se 3500 rreshta kod) dhe performanca shum\u00eb e lart\u00eb. N\u00eb testet e kryera<\/a><\/noindex> mimalloc ka tejkaluar performanc\u00ebn e t\u00eb gjitha bibliotekave konkurruese p\u00ebr shp\u00ebrndarjen e memories, duke p\u00ebrfshir\u00eb jemalloc<\/a><\/noindex>, tcmalloc<\/a><\/noindex>, snmalloc<\/a><\/noindex>, rpmalloc<\/a><\/noindex> dhe Hoard<\/a><\/noindex>. <\/p>\n

P\u00ebr vler\u00ebsimin e performanc\u00ebs \u00ebsht\u00eb p\u00ebrdorur nj\u00eb grup testesh standarde tashm\u00eb ekzistuese N\u00eb disa teste, mimalloc tejkalon sistemet e tjera me p\u00ebrmasa, p\u00ebr shembull, n\u00eb testin e migracionit t\u00eb objekteve midis proceseve, mimalloc rezultoi m\u00eb i shpejt\u00eb se tcmalloc dhe jemalloc m\u00eb shum\u00eb se 2.5 her\u00eb. N\u00eb t\u00eb nj\u00ebjt\u00ebn koh\u00eb, n\u00eb shumic\u00ebn e testeve \u0430\u043d\u0430\u043b\u0456\u0437\u0443\u0435\u0442\u0441\u044f edhe konsumi m\u00eb i ul\u00ebt i memories, n\u00eb disa situata, shpenzimi i memories arrin t\u00eb ulet me 25%.<\/a><\/noindex> Performanca e lart\u00eb arrihet kryesisht p\u00ebrmes aplikimit t\u00eb segmentimit t\u00eb list\u00ebs s\u00eb blloqeve t\u00eb lir\u00eb (free list sharding). N\u00eb vend t\u00eb nj\u00eb liste t\u00eb madhe, mimalloc p\u00ebrdor ndarjen n\u00eb nj\u00eb seri listash m\u00eb t\u00eb vogla, secila prej t\u00eb cilave lidhet me nj\u00eb faqe memories. Ky qasje zvog\u00eblon fragmentimin dhe rrit lokalizimin e t\u00eb dh\u00ebnave n\u00eb memorie. Faqja e memories kuptohet si nj\u00eb grup i blloqeve q\u00eb jan\u00eb t\u00eb ngjashme n\u00eb madh\u00ebsi. N\u00eb sistemet 64-bit, madh\u00ebsia e faqes zakonisht \u00ebsht\u00eb 64 KB. N\u00eb rast se n\u00eb faqe nuk mbeten blloqe t\u00eb z\u00ebna, ajo lirohet plot\u00ebsisht duke kthyer memorien te sistemi operativ, \u00e7ka ndihmon n\u00eb uljen e shpenzimeve t\u00eb memories dhe fragmentimin n\u00eb programe q\u00eb punojn\u00eb p\u00ebr nj\u00eb koh\u00eb t\u00eb gjat\u00eb.<\/p>\n

\"Microsoft<\/center><\/p>\n

Bibliotek\u00ebn mund ta lidhni n\u00eb faz\u00ebn e lidhjes ose ta ngarkoni p\u00ebr nj\u00eb program tashm\u00eb t\u00eb nd\u00ebrtuar (\"LD_PRELOAD=\\\/usr\\\/bin\\\/libmimalloc.so myprogram\"). N\u00eb bibliotek\u00eb gjithashtu ofrohet<\/p>\n

Biblioteka mund t\u00eb lidhet n\u00eb faz\u00ebn e lidhjes ose t\u00eb ngarkohet p\u00ebr programin tashm\u00eb t\u00eb nd\u00ebrtuar (\"LD_PRELOAD=\\\/usr\\\/bin\\\/libmimalloc.so myprogram\"). Biblioteka gjithashtu ofron API<\/a><\/noindex> mund\u00ebsin\u00eb p\u00ebr t\u00eb integruar funksionalitetin n\u00eb runtime dhe p\u00ebr t\u00eb menaxhuar me sakt\u00ebsi sjelljen, p\u00ebr shembull, p\u00ebr t\u00eb lidhur trajtuesit e \u00e7lirimit t\u00eb vonuar t\u00eb memories dhe rritjen monotone t\u00eb numrave t\u00eb referencave. Ekziston mund\u00ebsia p\u00ebr t\u00eb krijuar dhe p\u00ebrdorur n\u00eb aplikacion disa \"heap\" p\u00ebr shp\u00ebrndarjen n\u00eb zona t\u00eb ndryshme t\u00eb memories. Gjithashtu \u00ebsht\u00eb e mundur \u00e7lirimi i plot\u00eb i heap-it, pa e kaluar n\u00ebp\u00ebr objekte t\u00eb ve\u00e7anta q\u00eb ndodhen n\u00eb t\u00eb.<\/p>\n

\u00cbsht\u00eb parashikuar mund\u00ebsia e nd\u00ebrtimit t\u00eb bibliotek\u00ebs n\u00eb modalitetin e sigurt, n\u00eb t\u00eb cilin n\u00eb kufijt\u00eb e blloqeve b\u00ebhet z\u00ebvend\u00ebsimi i faqeve speciale mbrojt\u00ebse t\u00eb memories (guard-page), si dhe p\u00ebrdoret randomizimi i shp\u00ebrndarjes s\u00eb blloqeve dhe enkriptimi i listave t\u00eb blloqeve t\u00eb \u00e7liruara. Masa t\u00eb tilla lejojn\u00eb bllokimin e shumic\u00ebs s\u00eb teknikave tipike t\u00eb shfryt\u00ebzimit t\u00eb mbushjes s\u00eb tamponit n\u00eb heap. N\u00ebse aktivizohet modaliteti i sigurt, performanca bie me rreth 3%.<\/p>\n

Nga ve\u00e7orit\u00eb e mimalloc, theksohet gjithashtu se nuk \u00ebsht\u00eb e ndjeshme ndaj problemeve t\u00eb fryrjes n\u00eb fragmentimin e madh. N\u00eb skenarin m\u00eb t\u00eb keq, konsumimi i memories rritet me 0.2% p\u00ebr metadata dhe mund t\u00eb arrij\u00eb deri n\u00eb 16.7% p\u00ebr memorien e shp\u00ebrndar\u00eb. P\u00ebr t\u00eb shmangur konfliktet gjat\u00eb qasjes n\u00eb burime, mimalloc p\u00ebrdor vet\u00ebm operacione atomike.<\/p>\n

<\/a><\/noindex><\/p>\n

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

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Mi\u0441rosoft \u043e\u0442\u043a\u0440\u044b\u043b\u0430 \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 MIT \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443 mimalloc \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u043f\u0430\u043c\u044f\u0442\u0438, \u0438\u0437\u043d\u0430\u0447\u0430\u043b\u044c\u043d\u043e \u0441\u043e\u0437\u0434\u0430\u043d\u043d\u043e\u0439 \u0434\u043b\u044f runtime-\u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u0432 \u044f\u0437\u044b\u043a\u043e\u0432 Koka \u0438 Lean. Mimalloc \u0430\u0434\u0430\u043f\u0442\u0438\u0440\u043e\u0432\u0430\u043d \u0434\u043b\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0432 \u0442\u0438\u043f\u043e\u0432\u044b\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f\u0445 \u0431\u0435\u0437 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0438\u0445 \u043a\u043e\u0434\u0430 \u0438 \u043c\u043e\u0436\u0435\u0442 \u0432\u044b\u0441\u0442\u0443\u043f\u0430\u0442\u044c \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u043f\u0440\u043e\u0437\u0440\u0430\u0447\u043d\u043e\u0439 \u0437\u0430\u043c\u0435\u043d\u044b \u0444\u0443\u043d\u043a\u0446\u0438\u0438 malloc. \u041f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0440\u0430\u0431\u043e\u0442\u0430 \u0432 Windows, macOS, Linux, BSD \u0438 \u0434\u0440\u0443\u0433\u0438\u0445 Unix-\u043f\u043e\u0434\u043e\u0431\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445. \u041a\u043b\u044e\u0447\u0435\u0432\u043e\u0439 \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u044c\u044e mimalloc […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-35585","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Microsoft hapi kodin e sistemit t\u00eb shp\u00ebrndarjes s\u00eb memories mimalloc | ProHoster","description":"Kompania Microsoft hapi n\u00ebn licenc\u00ebn MIT bibliotek\u00ebn mimalloc me realizimin e sistemit t\u00eb shp\u00ebrndarjes s\u00eb 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