{"id":79056,"date":"2020-04-24T01:42:07","date_gmt":"2020-04-23T23:42:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/facebook-predlozhil-novyj-mehanizm-upravleniya-pamyatyu-slab-dlya-yadra-linux"},"modified":"2020-04-24T01:42:07","modified_gmt":"2020-04-23T23:42:07","slug":"facebook-predlozhil-novyj-mehanizm-upravleniya-pamyatyu-slab-dlya-yadra-linux","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/novosti-interneta\/facebook-predlozhil-novyj-mehanizm-upravleniya-pamyatyu-slab-dlya-yadra-linux","title":{"rendered":"Facebook ofron nj\u00eb mekaniz\u00ebm t\u00eb ri p\u00ebr menaxhimin e memories slab p\u00ebr b\u00ebrtham\u00ebn Linux","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Roman Gushchin (Roman Gushchin<\/a><\/noindex>) nga kompan\u00eda Facebook publikoi<\/a><\/noindex> n\u00eb list\u00ebn e shp\u00ebrndarjes s\u00eb zhvilluesve t\u00eb kernelit Linux nj\u00eb set patches me implementimin e nj\u00eb kontrolluesi t\u00eb ri p\u00ebr shp\u00ebrndarjen e memories slab<\/a><\/noindex> (kontrolluesi i memories slab). Kontrolluesi i ri \u00ebsht\u00eb i ve\u00e7ant\u00eb p\u00ebr transferimin e llogaris\u00eb slab nga niveli i faqeve t\u00eb memories n\u00eb nivelin e objekteve t\u00eb kernelit, q\u00eb lejon ndarjen e faqeve slab n\u00eb grupet e kontrollit (cgroup), n\u00eb vend q\u00eb t\u00eb alokoj\u00eb caches t\u00eb ve\u00e7anta slab p\u00ebr \u00e7do cgroup. <\/p>\n

Qasja e propozuar lejon rritjen e efikasitetit t\u00eb p\u00ebrdorimit t\u00eb slab, duke reduktuar madh\u00ebsin\u00eb e memories s\u00eb p\u00ebrdorur p\u00ebr slab me 30-45% dhe duke ulur ndjesh\u00ebm konsumin total t\u00eb memories nga kernel. Duke reduktuar numrin e slab-ve q\u00eb nuk mund t\u00eb zhvendosen, gjithashtu v\u00ebrehet nj\u00eb efekt pozitiv n\u00eb reduktimin e fragmentimeve t\u00eb memories. Kontrolluesi i ri i memories ndjesh\u00ebm e thjeshton kodin p\u00ebr llogaritjen e slab dhe nuk k\u00ebrkon p\u00ebrdorimin e algoritmeve t\u00eb komplikuara p\u00ebr krijimin dhe fshirjen dinamike t\u00eb caches slab p\u00ebr \u00e7do cgroup. T\u00eb gjitha cgroup p\u00ebr memories n\u00eb implementimin e ri p\u00ebrdorin nj\u00eb grup t\u00eb p\u00ebrbashk\u00ebt caches slab, dhe koha e jet\u00ebs s\u00eb caches slab nuk \u00ebsht\u00eb m\u00eb e lidhur me jet\u00ebn e cgroup-eve t\u00eb vendosura. kufizimeve<\/a><\/noindex> p\u00ebr p\u00ebrdorimin e memories.<\/p>\n

Realizimi i ri n\u00eb kontrollin slab ofron nj\u00eb monitorim m\u00eb t\u00eb sakt\u00eb t\u00eb burimeve, i cili teorikisht duhet t\u00eb ngarkoj\u00eb m\u00eb shum\u00eb CPU, por n\u00eb praktik\u00eb dallimet kan\u00eb qen\u00eb t\u00eb pap\u00ebrfillshme. N\u00eb ve\u00e7anti, ky kontroll slab \u00ebsht\u00eb p\u00ebrdorur tashm\u00eb p\u00ebr disa muaj n\u00eb serverat e pun\u00ebs t\u00eb Facebook, q\u00eb p\u00ebrpunojn\u00eb lloje t\u00eb ndryshme ngarkese, dhe deri tani nuk jan\u00eb zbuluar regresione t\u00eb dukshme. N\u00eb t\u00eb nj\u00ebjt\u00ebn koh\u00eb, ka pasur nj\u00eb reduktim t\u00eb ndjesh\u00ebm t\u00eb konsumit t\u00eb memorie \u2013 n\u00eb disa host-e \u00ebsht\u00eb arritur t\u00eb kursehet deri n\u00eb 1GB memorie, por ky tregues varet shum\u00eb nga karakteri i ngarkes\u00ebs, gjithsej p\u00ebrmasat e RAM-it, numri i CPU-ve dhe ve\u00e7orit\u00eb e pun\u00ebs me memorien. Testet e m\u00ebparshme t\u00eb kryera t\u00eb shfaqur<\/a><\/noindex> kan\u00eb treguar nj\u00eb ulje t\u00eb shpenzimeve t\u00eb memories me 650-700 MB (42% e memories slab) n\u00eb frontin web, 750-800 MB (35%) n\u00eb serverin me cache t\u00eb DBMS dhe 700 MB (36%) n\u00eb serverin DNS.<\/p>\n

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

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

\u0420\u043e\u043c\u0430\u043d \u0413\u0443\u0449\u0438\u043d (Roman Gushchin) \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Facebook \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0432 \u0441\u043f\u0438\u0441\u043a\u0435 \u0440\u0430\u0441\u0441\u044b\u043b\u043a\u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u044f\u0434\u0440\u0430 Linux \u043d\u0430\u0431\u043e\u0440 \u043f\u0430\u0442\u0447\u0435\u0439 \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u043d\u043e\u0432\u043e\u0433\u043e \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u0430 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u043f\u0430\u043c\u044f\u0442\u0438 slab (slab memory controller). \u041d\u043e\u0432\u044b\u0439 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440 \u043f\u0440\u0438\u043c\u0435\u0447\u0430\u0442\u0435\u043b\u0435\u043d \u043f\u0435\u0440\u0435\u043d\u043e\u0441\u043e\u043c \u0443\u0447\u0451\u0442\u0430 slab \u0441 \u0443\u0440\u043e\u0432\u043d\u044f \u0441\u0442\u0440\u0430\u043d\u0438\u0446 \u043f\u0430\u043c\u044f\u0442\u0438 \u043d\u0430 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u0431\u044a\u0435\u043a\u0442\u043e\u0432 \u044f\u0434\u0440\u0430, \u0447\u0442\u043e \u0434\u0430\u0451\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c slab-\u0441\u0442\u0440\u0430\u043d\u0438\u0446\u044b \u0432 \u0440\u0430\u0437\u043d\u044b\u0445 cgroup, \u0432\u043c\u0435\u0441\u0442\u043e \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0445 \u043a\u044d\u0448\u0435\u0439 slab \u0434\u043b\u044f […]<\/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-79056","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"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\udd47Facebook paraqiti nj\u00eb mekaniz\u00ebm t\u00eb ri p\u00ebr menaxhimin e memories slab p\u00ebr kernelin Linux | ProHoster","description":"Roman Gushchin (Roman Gushchin) nga kompan\u00eda Facebook publikoi n\u00eb list\u00ebn e shp\u00ebrndarjes s\u00eb zhvilluesve t\u00eb kernelit Linux nj\u00eb set patches me implementimin e nj\u00eb kontrolluesi t\u00eb ri p\u00ebr shp\u00ebrndarjen e memories slab (kontrolluesi i memories slab). 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