{"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\/ro\/blog\/news\/misrosoft-otkryl-kod-sistemy-raspredeleniya-pamyati-mimalloc","title":{"rendered":"Microsoft a deschis codul sistemului de distribu\u021bie a memoriei mimalloc","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Compania Microsoft a lansat sub licen\u021ba MIT o bibliotec\u0103 mimalloc<\/a><\/noindex> av\u00e2nd implement\u0103ri ale sistemului de gestionare a memoriei, creat ini\u021bial pentru componentele runtime ale limbajelor Koka<\/a><\/noindex> \u0219i Lean<\/a><\/noindex>. Mimalloc este adaptat pentru utilizarea \u00een aplica\u021bii standard f\u0103r\u0103 modific\u0103ri ale codului acestora \u0219i poate ac\u021biona ca un \u00eenlocuitor transparent pentru func\u021bia malloc. Func\u021bioneaz\u0103 pe Windows, macOS, Linux, BSD \u0219i alte sisteme Unix-like.<\/p>\n

O caracteristic\u0103 cheie a mimalloc este compactitatea implement\u0103rii (mai pu\u021bin de 3500 de linii de cod) \u0219i performan\u021ba extrem de ridicat\u0103. \u00cen testele efectuate<\/a><\/noindex> mimalloc a dep\u0103\u0219it toate bibliotecile concurente de gestionare a memoriei \u00een termeni de performan\u021b\u0103, inclusiv jemalloc<\/a><\/noindex>, tcmalloc<\/a><\/noindex>, snmalloc<\/a><\/noindex>, rpmalloc<\/a><\/noindex> \u0219i Hoard<\/a><\/noindex>. <\/p>\n

Pentru evaluarea performan\u021bei, a fost utilizat un set de teste standard<\/a><\/noindex> \u00cen unele teste, mimalloc dep\u0103\u0219e\u0219te celelalte sisteme cu mult, de exemplu, \u00een testul de migrare a obiectelor \u00eentre fire de execu\u021bie, mimalloc a fost mai rapid dec\u00e2t tcmalloc \u0219i jemalloc cu mai mult de 2.5 ori. De asemenea, \u00een majoritatea testelor, se observ\u0103 o consumare mai sc\u0103zut\u0103 a memoriei, \u00een unele situa\u021bii reu\u0219ind s\u0103 reducem consumul de memorie cu 25%.<\/p>\n

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

Performan\u021ba ridicat\u0103 este ob\u021binut\u0103 \u00een principal prin aplicarea fragment\u0103rii listei de blocuri libere (free list sharding). \u00cen loc de o singur\u0103 list\u0103 mare, mimalloc folose\u0219te o serie de liste mai mici, fiecare fiind legat\u0103 de o pagin\u0103 de memorie. Aceast\u0103 abordare reduce fragmentarea \u0219i \u00eembun\u0103t\u0103\u021be\u0219te localizarea datelor \u00een memorie. Prin pagin\u0103 de memorie, ne referim la un set grupat de blocuri de dimensiuni asem\u0103n\u0103toare. Pe sisteme de 64 de bi\u021bi, dimensiunea paginii este, de obicei, de 64 KB. Dac\u0103 \u00een pagin\u0103 nu mai r\u0103m\u00e2n blocuri ocupate, aceasta este complet eliberat\u0103, return\u00e2nd memoria sistemului de operare, ceea ce permite reducerea costurilor de memorie \u0219i a fragment\u0103rii \u00een programele care ruleaz\u0103 timp \u00eendelungat.<\/p>\n

Biblioteca poate fi legat\u0103 \u00een etapa de legare sau poate fi \u00eenc\u0103rcat\u0103 pentru un program deja compilat (\"LD_PRELOAD=\/usr\/bin\/libmimalloc.so myprogram\"). Biblioteca ofer\u0103 de asemenea API<\/a><\/noindex> integrarea func\u021bionalit\u0103\u021bii \u00een runtime \u0219i gestionarea fin\u0103 a comportamentului, de exemplu, pentru conectarea handler-ilor de eliberare \u00eent\u00e2rziat\u0103 a memoriei \u0219i cre\u0219terea monoton\u0103 a contoarelor de referin\u021b\u0103. Exist\u0103 posibilitatea de a crea \u0219i utiliza \u00een aplica\u021bie mai multe \"heap-uri\" pentru a distribui \u00een diferite zone de memorie. De asemenea, este posibil s\u0103 elibera\u021bi \u00eentreaga zon\u0103 alocat\u0103, f\u0103r\u0103 a parcurge \u0219i a elibera separat obiectele plasate \u00een ea.<\/p>\n

Este prev\u0103zut\u0103 posibilitatea de a construi biblioteca \u00een modul sigur, \u00een care la limitele blocurilor sunt substituite pagini speciale de verificare a memoriei (guard-page), iar distribu\u021bia blocurilor este, de asemenea, randomizat\u0103 \u0219i listele blocurilor eliberate sunt criptate. M\u0103suri de acest fel ajut\u0103 la blocarea majorit\u0103\u021bii tehnicilor tipice de exploatare a suprasolicit\u0103rilor buffer-ului \u00een heap. Activarea modulului sigur reduce performan\u021ba cu aproximativ 3%.<\/p>\n

Printre caracteristicile mimalloc se remarc\u0103 \u0219i rezisten\u021ba la problemele de dilatare \u00een cazul fragment\u0103rii mari. \u00cen cel mai r\u0103u caz, consumul de memorie cre\u0219te cu 0,2% pentru metadate \u0219i poate ajunge p\u00e2n\u0103 la 16,7% pentru memoria distribuit\u0103. Pentru a excluce conflictele la accesarea resurselor, \u00een mimalloc sunt utilizate doar opera\u021bii atomice.<\/p>\n

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

Sursa: opennet.ro<\/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\udd47Mi\u0441rosoft a deschis codul sistemului de distribu\u021bie a memoriei mimalloc | ProHoster","description":"Compania Mi\u0441rosoft a deschis sub licen\u021ba MIT biblioteca mimalloc cu implementarea unui sistem de distribu\u021bie a memoriei, creat ini\u021bial.","canonical_url":"https:\/\/prohoster.info\/ro\/blog\/news\/misrosoft-otkryl-kod-sistemy-raspredeleniya-pamyati-mimalloc","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"ro_RO","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47Mi\u0441rosoft \u043e\u0442\u043a\u0440\u044b\u043b \u043a\u043e\u0434 \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 mimalloc | ProHoster","og:description":"\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.","og:url":"https:\/\/prohoster.info\/ro\/blog\/news\/misrosoft-otkryl-kod-sistemy-raspredeleniya-pamyati-mimalloc","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2019-10-31T19:05:11+00:00","article:modified_time":"2019-10-31T19:05:11+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"35585","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":null,"schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-01-21 23:52:19","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-03-01 01:59:36","updated":"2026-01-21 23:52:19","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts\/35585","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/comments?post=35585"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts\/35585\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/media?parent=35585"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/categories?post=35585"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/tags?post=35585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}