{"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\/news\/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 eelmisel aastal aruanne TMO (Transparent Memory Offloading) tehnoloogia rakendamisest, mis v\u00f5imaldab m\u00e4rkimisv\u00e4\u00e4rselt s\u00e4\u00e4sta operatiivm\u00e4lu serverites, suunates mitteolulised t\u00f6\u00f6ks vajalikud sekundaarandmed odavamatele salvestusseadmetele nagu NVMe SSD-diskid. Facebooki hinnangul v\u00f5imaldab TMO rakendamine s\u00e4\u00e4sta 20 kuni 32% RAM-i igas serveris. Lahendus on m\u00f5eldud rakendatamiseks infrakonstruktsioonides, kus rakendused k\u00e4ivitatakse isoleeritud konteineritena. TMO tuumapoolne t\u00f6\u00f6 on juba kaasatud Linuxi tuumasse. <\/p>\n

Linuxi tuuma poolel tagab tehnoloogia t\u00f6\u00f6 PSI (Pressure Stall Information) alams\u00fcsteem, mis on saadaval alates versioonist 4.20. PSI-d kasutatakse juba erinevates m\u00e4lu nappuse k\u00e4sitlejates ja see v\u00f5imaldab anal\u00fc\u00fcsida teavet erinevate ressursside (CPU, m\u00e4lu, sisend\/v\u00e4ljund) ootamise aja kohta. PSI abil v\u00f5ivad kasutaja ruumi k\u00e4sitlejad t\u00e4psemalt hinnata s\u00fcsteemi koormuse taset ja t\u00f6\u00f6 aeglustumise iseloomu, mis aitab tuvastada k\u00f5rvalekaldeid juba varases etapis, mil need veel m\u00e4rkimisv\u00e4\u00e4rset m\u00f5ju ei avalda j\u00f5udlusele. <\/p>\n

Kasutaja ruumis tagab TMO t\u00f6\u00f6 komponent Senpai, mis cgroup2 kaudu d\u00fcnaamiliselt kohandab rakenduste konteinerite m\u00e4lupiirangut PSI-lt saadud andmete p\u00f5hjal. Senpai anal\u00fc\u00fcsib PSI kaudu ressursipuuduse alguse m\u00e4rke, hindab rakenduste tundlikkust m\u00e4lu ligip\u00e4\u00e4su aeglustumise vastu ja p\u00fc\u00fcab m\u00e4\u00e4rata sellele konteinerile minimaalset vajalikku m\u00e4lusuurust, mille juures t\u00f6\u00f6ks vajalikud andmed j\u00e4\u00e4vad RAM-i, samas kui m\u00e4lus oleva vahem\u00e4lu aluses kinni j\u00e4\u00e4nud ning praegu mittekasutatavad andmed suunatakse vahetusfaili.

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

Seega TMO p\u00f5hij\u00f5ud seisneb selles, et hoida protsessid rangelt m\u00e4lu tarbimise dieedil, sundides mittet\u00e4idetud m\u00e4lulehek\u00fclgi vahetama vahemerel, mille eemaldamine ei m\u00f5juta m\u00e4rkimisv\u00e4\u00e4rselt toimivust (n\u00e4iteks lehed, mille koodi kasutatakse ainult algatamise ajal ja \u00fcksik\u00fclesande andmed kettakaardis). Erinevalt teabe vahetamisest vahemerel vastusena m\u00e4luruumi puudusele, TMO puhul andmed vahetatakse prognoosi alusel. <\/p>\n

\u00dcks v\u00e4ljaj\u00e4tmise kriteeriume on m\u00e4lulehek\u00fclje juurde p\u00e4\u00e4semise puudumine 5 minuti jooksul. Selliseid lehti nimetatakse k\u00fclmadeks (cold memory page) ja need moodustavad keskmiselt umbes 35% rakenduste m\u00e4lust (s\u00f5ltuvalt rakendustest on vahemik 19% kuni 65%). Eemaldamisel arvestatakse aktiivsust, mis on seotud anon\u00fc\u00fcmsete m\u00e4lu lehtedega (m\u00e4lumaht, mille rakendus eraldab) ja faili vahem\u00e4lu m\u00e4luga (mille eraldab tuum). M\u00f5nedes rakendustes on peamine tarbimine seotud anon\u00fc\u00fcmse m\u00e4luga, kuid teistes m\u00e4ngib suurt rolli ka faili vahem\u00e4lu. Tasakaalu v\u00e4ltimiseks m\u00e4lu v\u00e4lja vahetamisel kasutatakse TMO-s uut vahetush\u00fcpooteeti, mis vahetab anon\u00fc\u00fcmseid lehti ja faili vahem\u00e4lulehtedeks proportsionaalselt. <\/p>\n

Harva kasutatavate lehtede vahetamine aeglasemale m\u00e4lule ei m\u00f5juta oluliselt toimivust, kuid v\u00f5imaldab m\u00e4rkimisv\u00e4\u00e4rselt v\u00e4hendada seadmete kulusid. Andmed vahetatakse SSD-seadmetele v\u00f5i kokku pakitud vahem\u00e4lule operatiivm\u00e4lu sees. Byte andmete hoidmise kulude osas on NVMe SSD rakendamine kuni 10 korda odavam kui kokkusurumise kasutamine operatiivm\u00e4lu sees.

\"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-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\udd47Facebook esitles TMO mehhanismi, mis v\u00f5imaldab serverites kokku hoida 20-32% m\u00e4lu | ProHoster","description":"Facebooki insenerid (Venemaal keelatud) avaldasid eelmise aasta aruande TMO (Transparent Memory Offloading) tehnoloogia rakendamisest, mis v\u00f5imaldab m\u00e4rkimisv\u00e4\u00e4rset kokkuhoidu serverite operatiivm\u00e4lu osas.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/news\/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.","og:url":"https:\/\/prohoster.info\/et\/blog\/news\/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 13:37:49","updated":"2022-10-01 20:35:20","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts\/104459","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/comments?post=104459"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts\/104459\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/media\/104460"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/media?parent=104459"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/categories?post=104459"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/tags?post=104459"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}