{"id":104459,"date":"2022-06-21T15:36:41","date_gmt":"2022-06-21T13:36:42","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/facebook-predstavil-mehanizm-tmo-pozvolyayushhij-ekonomit-20-32-pamyati-na-serverah"},"modified":"2022-06-21T15:36:41","modified_gmt":"2022-06-21T13:36:42","slug":"facebook-predstavil-mehanizm-tmo-pozvolyayushhij-ekonomit-20-32-pamyati-na-serverah","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/facebook-predstavil-mehanizm-tmo-pozvolyayushhij-ekonomit-20-32-pamyati-na-serverah","title":{"rendered":"Facebook tutvustas TMO mehhanismi, mis v\u00f5imaldab s\u00e4\u00e4sta 20-32% m\u00e4lu serverites.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Facebooki insenerid (Venemaal keelatud) avaldasid eelmise aasta aruande TMO (Transparent Memory Offloading) tehnoloogia rakendamisest, mis v\u00f5imaldab serverites oluliselt s\u00e4\u00e4sta m\u00e4lu, r\u00f5hutades t\u00f6\u00f6ks mitte vajalikud sekundaarandmed odavamatele salvestusseadmetele, nagu NVMe SSD-diskid. Facebooki hinnangul v\u00f5imaldab TMO kasutamine igal serveril s\u00e4\u00e4sta 20\u201332% RAMi. Lahendus on m\u00f5eldud rakendamiseks infrastruktuurides, kus rakendused k\u00e4ivitatakse isoleeritud konteinerites. TMO komponentide, mis t\u00f6\u00f6tavad kerni pooles, sisaldus juba Linuxi k\u00e4rgis. <\/p>\n

Linux'i tuumas\u00fcsteemi t\u00f6\u00f6 tagab PSI (Pressure Stall Information) alams\u00fcsteem, mis on saadaval alates versioonist 4.20. PSI-d on juba rakendatud erinevates m\u00e4lu nappuse haldurites ja see v\u00f5imaldab anal\u00fc\u00fcsida andmeid erinevate ressursside (CPU, m\u00e4lukaart, sisend\/v\u00e4ljund) ooteaegade kohta. PSI abil saavad kasutaja tasandi haldurid t\u00e4psemalt hinnata s\u00fcsteemi koormust ja t\u00f6\u00f6 aeglustumise iseloomu, mis v\u00f5imaldab tuvastada k\u00f5rvalekaldeid juba varases etapis, mil need ei m\u00f5juta veel m\u00e4rgatavalt j\u00f5udlust. <\/p>\n

Kasutajaruumis tagab TMO toimimise komponent Senpai, mis cgroup2 kaudu kohandab d\u00fcnaamiliselt rakenduste konteinerite m\u00e4lupiiranguid PSI andmete p\u00f5hjal. Senpai anal\u00fc\u00fcsib ressursipuuduse alguse m\u00e4rke PSI kaudu, hindab rakenduste tundlikkust m\u00e4lu juurdep\u00e4\u00e4su aeglustumise suhtes ja p\u00fc\u00fcab m\u00e4\u00e4rata minimaalselt vajaliku m\u00e4lumahu, mille korral vajalikud t\u00f6\u00f6andmed p\u00fcsivad RAM-is, samas kui seotud andmed, mis on j\u00e4\u00e4dvustatud failide vahem\u00e4llu v\u00f5i ei ole hetkel otse kasutuses, t\u00f5rjutakse vahetusfaili.

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

Seega, TMO olemus seisneb selles, et hoida protsessid rangelt m\u00e4lutarbimise dieedil, sundides ebat\u00e4psete lehtede m\u00e4lumahtude liikumist swap-ala, mille v\u00e4ljaj\u00e4tmine ei m\u00f5juta oluliselt j\u00f5udlust (n\u00e4iteks lehed, mille kood on kasutusel ainult initsialiseerimise ajal, ja \u00fcksik\u00fchikutesse kasutatavad andmed kettapuhvrisse). Erinevalt andmete edasiviimisest swap-ala, mis toimub vastuseks m\u00e4lupuudusele, edastatakse TMO-s andmed eelprojekteeritud prognooside p\u00f5hjal. <\/p>\n

\u00dche kriteeriumina muutmise jaoks v\u00f5etakse arvesse, et m\u00e4lulehek\u00fclge ei ole kasutatud viie minuti jooksul. Selliseid lehti nimetatakse k\u00fclmadeks (cold memory page) ja need moodustavad keskmiselt umbes 35% rakenduste m\u00e4lust (s\u00f5ltuvalt rakenduse t\u00fc\u00fcbist on erinevus vahemikus 19% kuni 65%). V\u00e4ltimisel arvestatakse m\u00e4lup\u00f5hi (rakendusele eraldatud m\u00e4lu) ja failide vahem\u00e4lu (t\u00f5ukerelva eraldatud m\u00e4lu) seondumist. M\u00f5nedes rakendustes on peamine tarbimine seotud anon\u00fc\u00fcmse m\u00e4lu kasutamisega, kuid teistes on oluline ka failide vahem\u00e4lu. Et v\u00e4ltida m\u00e4lupoliitika tasakaalu h\u00e4irimist vahem\u00e4lus, rakendan TMO uut vahetust algoritmi, mis vahetab v\u00e4lja anon\u00fc\u00fcmsed lehed ja lehed, mis on seotud failide vahem\u00e4luga proportsionaalselt. <\/p>\n

V\u00e4hekasutatud lehtede viimine aeglasemasse m\u00e4lu ei oma suurt m\u00f5ju j\u00f5udlusele, kuid aitab oluliselt v\u00e4hendada seadmete kulusid. Andmed suunatakse SSD-draividele v\u00f5i kokku surutud vahem\u00e4lu piirkonda operatiivm\u00e4lu sees. NVMe SSD-de kasutamine, arvestades andmete salvestamise kulu, on kuni 10 korda odavam kui kokku surumine operatiivm\u00e4lus.

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

\u0418\u043d\u0436\u0435\u043d\u0435\u0440\u044b \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Facebook (\u0437\u0430\u043f\u0440\u0435\u0449\u0435\u043d\u0430 \u0432 \u0420\u0424) \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0438 \u043e\u0442\u0447\u0451\u0442 \u043e \u0432\u043d\u0435\u0434\u0440\u0435\u043d\u0438\u0438 \u0432 \u043f\u0440\u043e\u0448\u043b\u043e\u043c \u0433\u043e\u0434\u0443 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 TMO (Transparent Memory Offloading), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0439 \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u044d\u043a\u043e\u043d\u043e\u043c\u0438\u0442\u044c \u043e\u043f\u0435\u0440\u0430\u0442\u0438\u0432\u043d\u0443\u044e \u043f\u0430\u043c\u044f\u0442\u044c \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u0430\u0445 \u0437\u0430 \u0441\u0447\u0451\u0442 \u0432\u044b\u0442\u0435\u0441\u043d\u0435\u043d\u0438\u044f \u043d\u0435 \u0442\u0440\u0435\u0431\u0443\u0435\u043c\u044b\u0445 \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0432\u0442\u043e\u0440\u0438\u0447\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u043d\u0430 \u0431\u043e\u043b\u0435\u0435 \u0434\u0435\u0448\u0451\u0432\u044b\u0435 \u043d\u0430\u043a\u043e\u043f\u0438\u0442\u0435\u043b\u0438, \u0442\u0430\u043a\u0438\u0435 \u043a\u0430\u043a NVMe SSD-\u0434\u0438\u0441\u043a\u0438. \u041f\u043e \u043e\u0446\u0435\u043d\u043a\u0435 Facebook, \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435 TMO \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u044d\u043a\u043e\u043d\u043e\u043c\u0438\u0442\u044c \u043e\u0442 20 \u0434\u043e 32% […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":104460,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-104459","post","type-post","status-publish","format-standard","has-post-thumbnail","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 tutvustas TMO mehhanism, mis v\u00f5imaldab serverites s\u00e4\u00e4sta 20-32% m\u00e4lu | ProHoster","description":"Facebooki insenerid (Venemaal keelatud) avaldasid aruande eelmise aasta TMO (Transparent Memory Offloading) tehnoloogia juurutamise kohta, mis v\u00f5imaldab serverites operatiivm\u00e4lu m\u00e4rkimisv\u00e4\u00e4rselt kokku hoida, kaasates v\u00e4hem vajalikke andmeid odavamatele m\u00e4lupulkadele, nagu NVMe SSD-d. Facebooki hinnangul v\u00f5imaldab TMO s\u00e4\u00e4sta 20 kuni 32%.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/facebook-predstavil-mehanizm-tmo-pozvolyayushhij-ekonomit-20-32-pamyati-na-serverah","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","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\udd47Facebook \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c TMO, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0439 \u044d\u043a\u043e\u043d\u043e\u043c\u0438\u0442\u044c 20-32% \u043f\u0430\u043c\u044f\u0442\u0438 \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u0430\u0445 | ProHoster","og:description":"\u0418\u043d\u0436\u0435\u043d\u0435\u0440\u044b \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Facebook (\u0437\u0430\u043f\u0440\u0435\u0449\u0435\u043d\u0430 \u0432 \u0420\u0424) \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0438 \u043e\u0442\u0447\u0451\u0442 \u043e \u0432\u043d\u0435\u0434\u0440\u0435\u043d\u0438\u0438 \u0432 \u043f\u0440\u043e\u0448\u043b\u043e\u043c \u0433\u043e\u0434\u0443 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 TMO (Transparent Memory Offloading), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0439 \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u044d\u043a\u043e\u043d\u043e\u043c\u0438\u0442\u044c \u043e\u043f\u0435\u0440\u0430\u0442\u0438\u0432\u043d\u0443\u044e \u043f\u0430\u043c\u044f\u0442\u044c \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u0430\u0445 \u0437\u0430 \u0441\u0447\u0451\u0442 \u0432\u044b\u0442\u0435\u0441\u043d\u0435\u043d\u0438\u044f \u043d\u0435 \u0442\u0440\u0435\u0431\u0443\u0435\u043c\u044b\u0445 \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0432\u0442\u043e\u0440\u0438\u0447\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u043d\u0430 \u0431\u043e\u043b\u0435\u0435 \u0434\u0435\u0448\u0451\u0432\u044b\u0435 \u043d\u0430\u043a\u043e\u043f\u0438\u0442\u0435\u043b\u0438, \u0442\u0430\u043a\u0438\u0435 \u043a\u0430\u043a NVMe SSD-\u0434\u0438\u0441\u043a\u0438. \u041f\u043e \u043e\u0446\u0435\u043d\u043a\u0435 Facebook, \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435 TMO \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u044d\u043a\u043e\u043d\u043e\u043c\u0438\u0442\u044c \u043e\u0442 20 \u0434\u043e 32%","og:url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/facebook-predstavil-mehanizm-tmo-pozvolyayushhij-ekonomit-20-32-pamyati-na-serverah","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":"2022-06-21T13:36:42+00:00","article:modified_time":"2022-06-21T13:36:42+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"104459","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":"default","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":null,"breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2022-06-21 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