{"id":112173,"date":"2023-12-13T03:10:13","date_gmt":"2023-12-13T01:10:13","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/opublikovana-platforma-sef-dlya-programmno-upravlyaemyh-flash-nakopitelej"},"modified":"2023-12-13T03:10:13","modified_gmt":"2023-12-13T01:10:13","slug":"opublikovana-platforma-sef-dlya-programmno-upravlyaemyh-flash-nakopitelej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sl\/blog\/news\/opublikovana-platforma-sef-dlya-programmno-upravlyaemyh-flash-nakopitelej","title":{"rendered":"Objavljena je platforma SEF za programsko upravljane Flash naprave.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Organizacija Linux Foundation je predstavila prvo izdanje otvorene platforme za softverski upravljane Flash ure\u0111aje SEF (Software Enabled Flash), bazirane na kodu koji je proizvela kompanija KIOXIA (prije preimenovanja Toshiba Memory Corporation), gdje je 1980. godine izumljena Flash memorija. Izvorni kod alata napisan je na jeziku C i distribuira se pod BSD licencom.    <\/p>\n<p>Alatna oprema vklju\u010duje nabor popravkov za jedro Linux, blokovni vmesnik za naprave SEF (Software Enabled Flash), ukaze za upravljanje iz ukazne vrstice, paravirtualizirane SEF-vmesnike za QEMU, knji\u017enico z API-jem za razvoj aplikacij, popravke za nvme-cli in FIO, ki dodajajo podporo za SEF. SDK prav tako vklju\u010duje referen\u010dno implementacijo programske ravni FTL (Flash Translation Layer), ki zagotavlja prevajanje ukazov blokovnih naprav v klice dejanskemu \u010dipu Flash-pomnilnika, zbiranje smeti in razporejanje podatkov po pomnilni\u0161kih celicah. FTL implementira podporo za fleksibilno umestitev podatkov (FDP \u2014 Flexible Data Placement), zoniranje (ZNS \u2014 Zoned Namespace) in specifikacijo NVMe.        <\/p>\n<p>U obi\u010dnim Flash ure\u0111ajima za eksterne sisteme, skladi\u0161te predstavlja crnu kutiju, gde se deo memorije rezervi\u0161e za servisne operacije, a performanse su nestabilne uz nepredvidive latencije usled unutra\u0161nje aktivnosti kontrolera, na primer, tokom sakupljanja sme\u0107a. Za razliku od tradicionalnih Flash ure\u0111aja, gde raspodelu podataka, izolaciju o\u0161te\u0107enih blokova i sakupljanje sme\u0107a obavlja firmver kontrolera, ure\u0111aji sa podr\u0161kom za SEF omogu\u0107avaju prebacivanje logike niskonivoa rada sa Flash \u010dipom na stranu softvera i operativnog sistema.     <\/p>\n<p>SEF omogo\u010da neposredno upravljanje fizi\u010dne razporeditve podatkov, spreminjanje algoritmov obremenitve, upravljanje prioritet in QoS, odpravo dodatne plasti predelave blokov, uporabo vse dostopne pomnilnosti, dosego predvidljivega delovanja z napravo za shranjevanje ter razdelitev naprave za shranjevanje na virtualne naprave, izolirane na ravni vnosa\/izhoda in z razli\u010dnimi prioritetami pri obdelavi. Predlagan pristop SEF omogo\u010da zni\u017eanje stro\u0161kov in pove\u010danje u\u010dinkovitosti interakcije z napravo za shranjevanje s prilagajanjem trenutnim potrebam logike zbiranja smeti, rezervacije pomnilnosti ter razporeditve blokov za zmanj\u0161anje obrabe.     <\/p>\n<p>Na primer, SEF omogo\u010da normalizacijo zmogljivosti v pogojih uporabe niza nabavljenih v razli\u010dnem \u010dasu naprav za shranjevanje z razli\u010dnimi lastnostmi. Za naprave za shranjevanje, ki se prete\u017eno uporabljajo le za branje, SEF omogo\u010da uporabo preprostej\u0161ih algoritmov razporeditve blokov in zmanj\u0161anje pomnilnosti, rezervirane za storitvene potrebe.<br \/>\n<br \/>Izvor: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=60278\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u044f Linux Foundation \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u043f\u0435\u0440\u0432\u044b\u0439 \u0432\u044b\u043f\u0443\u0441\u043a \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b \u0434\u043b\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e \u0443\u043f\u0440\u0430\u0432\u043b\u044f\u0435\u043c\u044b\u0445 Flash-\u043d\u0430\u043a\u043e\u043f\u0438\u0442\u0435\u043b\u0435\u0439 SEF (Software Enabled Flash), \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u043e\u0439 \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u043a\u043e\u0434\u0430, \u043f\u0435\u0440\u0435\u0434\u0430\u043d\u043d\u043e\u0433\u043e \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0435\u0439 KIOXIA (\u0434\u043e \u043f\u0435\u0440\u0435\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u044f Toshiba Memory Corporation), \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0432 1980 \u0433\u043e\u0434\u0443 \u0431\u044b\u043b\u0430 \u0438\u0437\u043e\u0431\u0440\u0435\u0442\u0435\u043d\u0430 Flash-\u043f\u0430\u043c\u044f\u0442\u044c. \u0418\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0442\u0435\u043a\u0441\u0442\u044b \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u044b \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 \u0421\u0438 \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u044e\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 BSD. \u0418\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0439 \u0432\u043a\u043b\u044e\u0447\u0430\u0435\u0442 \u0432 \u0441\u0435\u0431\u044f \u043d\u0430\u0431\u043e\u0440 \u043f\u0430\u0442\u0447\u0435\u0439 \u0434\u043b\u044f [&hellip;]<\/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-112173","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" 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Flash-\u043d\u0430\u043a\u043e\u043f\u0438\u0442\u0435\u043b\u0435\u0439 SEF (Software Enabled Flash), \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u043e\u0439 \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u043a\u043e\u0434\u0430, \u043f\u0435\u0440\u0435\u0434\u0430\u043d\u043d\u043e\u0433\u043e \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0435\u0439 KIOXIA 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