{"id":155127,"date":"2026-01-25T17:11:59","date_gmt":"2026-01-25T15:11:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/predstavlena-fs-daxfs-pohozhaya-na-ramfs-i-tmpfs-no-rabotayushhaya-v-obhod-stranichnogo-kesha"},"modified":"2026-01-25T17:11:59","modified_gmt":"2026-01-25T15:11:59","slug":"predstavlena-fs-daxfs-pohozhaya-na-ramfs-i-tmpfs-no-rabotayushhaya-v-obhod-stranichnogo-kesha","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/predstavlena-fs-daxfs-pohozhaya-na-ramfs-i-tmpfs-no-rabotayushhaya-v-obhod-stranichnogo-kesha","title":{"rendered":"A fost prezentat FS DAXFS, similar cu ramfs \u0219i tmpfs, dar func\u021bion\u00e2nd prin ocolirea cache-ului de pagini","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Cong Wang, care \u00eenso\u021be\u0219te sub-sistemul de gestionare a traficului (TC, Traffic Control) \u00een nucleul Linux \u0219i dezvolt\u0103 proiectul Multikernel, a inclus \u00een lista dezvoltatorilor nucleului Linux un nou sistem de fi\u0219iere DAXFS. DAXFS folose\u0219te memoria RAM pentru stocarea datelor, func\u021bioneaz\u0103 \u00een modul doar pentru citire \u0219i seam\u0103n\u0103 cu func\u021bionalitatea sistemelor de fi\u0219iere reduse ramfs \u0219i tmpfs. Modulul kernel care implementeaz\u0103 DAXFS, precum \u0219i utilitarul mkdaxfs pentru crearea FS-ului, sunt publicate sub licen\u021ba GPLv2. Dup\u0103 recenzare, se ia \u00een considerare posibilitatea integr\u0103rii DAXFS \u00een nucleul principal. <\/p>\n

O caracteristic\u0103 cheie a noului FS este utilizarea sub-sistemului DAX (Direct Access) pentru a func\u021biona prin ocolirea cache-ului de pagini \u0219i accesul direct la memoria fizic\u0103 partajat\u0103. \u00cen ramfs \u0219i tmpfs, con\u021binutul este stocat \u00een cache-ul de pagini, ceea ce, atunci c\u00e2nd se folose\u0219te un FS \u00een mai multe containere sau nuclee rulate prin tehnologia Multikernel, duce la stocarea mai multor copii ale datelor \u00een memoria fizic\u0103. Umplerea ramfs \u0219i tmpfs necesit\u0103, de asemenea, efectuarea unor opera\u021bii suplimentare de copiere f\u0103r\u0103 posibilitatea de a efectua maparea unei zone existente de memorie. <\/p>\n

Accesul direct la memorie \u00een DAXFS permite eliminarea opera\u021biunilor suplimentare de copiere \u0219i organizarea muncii prin ocolirea stivei tradi\u021bionale de intrare\/ie\u0219ire bazate pe dispozitive de bloc \u0219i mecanisme de bufferizare, precum \u0219i eliminarea fragment\u0103rii aloc\u0103rii memoriei atunci c\u00e2nd o FS este utilizat\u0103 \u00een comun \u00een diferite containere \u0219i nuclee multikernel. DAXFS func\u021bioneaz\u0103 \u00een modul Zero-Copy \u0219i returneaz\u0103 direct con\u021binutul fi\u0219ierelor din memorie f\u0103r\u0103 duplicarea inutil\u0103 a datelor \u00een cache-ul de pagini \u0219i cu posibilitatea de a mapa zone continue de memorie fizic\u0103 \u00een fiecare instan\u021b\u0103 de container sau nucleu. De asemenea, se sus\u021bine utilizarea API dma-buf pentru utilizarea memoriei exportate de GPU, FPGA\/SmartNIC sau dispozitivele CXL. <\/p>\n

FS-ul func\u021bioneaz\u0103 \u00een modul doar pentru citire \u0219i este ini\u021bializat prin \u00eenc\u0103rcarea \u00een memorie a unei imagini FS preg\u0103tite anterior, ceea ce simplific\u0103 implementarea, permite evitarea opera\u021biunilor de alocare a memoriei \u00een timpul func\u021bion\u0103rii \u0219i exclude mecanismele complicate de gestionare a dispozitivului. <\/p>\n

O utilizare cheie a DAXFS este aplica\u021bia acesteia \u00eempreun\u0103 cu tehnologia Multikernel, care permite pe un singur computer fizic s\u0103 ruleze mai multe instan\u021be independente ale nucleului Linux, av\u00e2nd acces direct la resursele hardware \u0219i put\u00e2nd fi utilizate pentru a lansa mai multe medii sistemice izolate. <\/p>\n

DAXFS poate fi folosit de asemenea pentru a organiza accesul comun al mai multor containere sau nuclee la o imagine de sistem de baz\u0103, stocat\u0103 \u00een memorie partajat\u0103; pentru a reduce cheltuielile generale \u00een accesarea informa\u021biilor din memoria acceleratorilor hardware; pentru a organiza accesul la memorie din mai multe gazde f\u0103r\u0103 intrare-ie\u0219ire de re\u021bea sau la memorie permanent\u0103, utiliz\u00e2nd dispozitive bazate pe magistrala CXL (Compute Express Link).
\n
Sursa: opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043d\u0433 \u0412\u0430\u043d\u0433 (Cong Wang), \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0430\u044e\u0449\u0438\u0439 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0443 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0442\u0440\u0430\u0444\u0438\u043a\u043e\u043c (TC, Traffic Control) \u0432 \u044f\u0434\u0440\u0435 Linux \u0438 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0438\u0439 \u043f\u0440\u043e\u0435\u043a\u0442 Multikernel, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b \u0432 \u0441\u043f\u0438\u0441\u043a\u0435 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u044f\u0434\u0440\u0430 Linux \u043d\u043e\u0432\u0443\u044e \u0444\u0430\u0439\u043b\u043e\u0432\u0443\u044e \u0441\u0438\u0441\u0442\u0435\u043c\u0443 DAXFS. DAXFS \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 \u0434\u043b\u044f \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 \u043e\u043f\u0435\u0440\u0430\u0442\u0438\u0432\u043d\u0443\u044e \u043f\u0430\u043c\u044f\u0442\u044c, \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u0432 \u0440\u0435\u0436\u0438\u043c\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u0434\u043b\u044f \u0447\u0442\u0435\u043d\u0438\u044f \u0438 \u043d\u0430\u043f\u043e\u043c\u0438\u043d\u0430\u0435\u0442 \u043f\u043e \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u0443\u0440\u0435\u0437\u0430\u043d\u043d\u044b\u0435 \u0444\u0430\u0439\u043b\u043e\u0432\u044b\u0435 \u0441\u0438\u0441\u0442\u0435\u043c\u044b ramfs \u0438 tmpfs. \u041c\u043e\u0434\u0443\u043b\u044c \u044f\u0434\u0440\u0430 \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-155127","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\udd47A fost prezentat FS DAXFS, similar cu ramfs \u0219i tmpfs, dar func\u021bion\u00e2nd \u00een afara cache-ului de pagini | ProHoster","description":"Cong Wang, care supravegheaz\u0103 subsistemul de gestionare a traficului (TC, Traffic Control) \u00een nucleul Linux \u0219i dezvolt\u0103 proiectul Multikernel, a prezentat o nou\u0103 sistem de fi\u0219iere DAXFS \u00een lista dezvoltatorilor nucleului 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