{"id":80342,"date":"2020-05-05T07:42:07","date_gmt":"2020-05-05T05:42:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dlya-yadra-linux-razvivaetsya-sistema-raspredelyonnogo-vypolneniya-potokov-popcorn"},"modified":"2020-05-05T07:42:07","modified_gmt":"2020-05-05T05:42:07","slug":"dlya-yadra-linux-razvivaetsya-sistema-raspredelyonnogo-vypolneniya-potokov-popcorn","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/news\/dlya-yadra-linux-razvivaetsya-sistema-raspredelyonnogo-vypolneniya-potokov-popcorn","title":{"rendered":"P\u00ebr b\u00ebrtham\u00ebn Linux po zhvillohet sistemi i ekzekutimit t\u00eb shp\u00ebrndar\u00eb t\u00eb rrjedhave Popcorn","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Universiteti Politeknik i Virgjinis\u00eb propozoi<\/a><\/noindex> p\u00ebr diskutimin e zhvilluesve t\u00eb b\u00ebrtham\u00ebs Linux mbi nj\u00eb set patch-esh me implementimin e sistemit t\u00eb ekzekutimit t\u00eb shp\u00ebrndar\u00eb t\u00eb proceseve Popcorn<\/a><\/noindex> (Ekzekutimi i Shp\u00ebrndar\u00eb i Proceseve), i cili lejon organizimin e ekzekutimit t\u00eb aplikacioneve n\u00eb disa kompjuter\u00eb me shp\u00ebrndarjen dhe migrimin e transparenc\u00ebs s\u00eb proceseve midis hosteve. Me an\u00eb t\u00eb Popcorn, aplikacionet mund t\u00eb nisin n\u00eb nj\u00eb host dhe m\u00eb pas t\u00eb zhvendosen n\u00eb nj\u00eb host tjet\u00ebr pa ndalur pun\u00ebn. N\u00eb programet me shum\u00eb procese, lejohet migrimi i proceseve t\u00eb ve\u00e7anta n\u00eb hoste t\u00eb tjera. <\/p>\n

Ndryshe nga projekti CRIU<\/a><\/noindex>, i cili lejon ruajtjen e gjendjes s\u00eb procesit dhe rinisjen e ekzekutimit n\u00eb nj\u00eb sistem tjet\u00ebr, Popcorn ofron migrim pa nd\u00ebrprerje dhe dinamik midis hosteve gjat\u00eb ekzekutimit t\u00eb aplikacionit, pa k\u00ebrkuar veprime nga p\u00ebrdoruesi dhe duke siguruar koherenc\u00ebn e memories virtuale n\u00eb t\u00eb gjith\u00eb hostet ku ekzekutohen nj\u00ebkoh\u00ebsisht proceset. <\/p>\n

Staku softueror i Popcorn p\u00ebrb\u00ebhet patches<\/a><\/noindex> me b\u00ebrtham\u00ebn Linux dhe bibliotek\u00eb<\/a><\/noindex> me teste q\u00eb tregojn\u00eb se si mund t\u00eb p\u00ebrdoren thirrjet e sistemit Popcorn p\u00ebr migrimin e proceseve n\u00eb aplikacionet e ekzektuara shp\u00ebrndar\u00eb. N\u00eb nivelin e b\u00ebrtham\u00ebs ofrohen zgjerime p\u00ebr n\u00ebn-sistemin e memories virtuale me implementimin e memories s\u00eb shp\u00ebrndar\u00eb t\u00eb ndar\u00eb (distributed shared memory), e cila lejon proceset n\u00eb hoste t\u00eb ndryshme t\u00eb aksesojn\u00eb hap\u00ebsir\u00ebn e adres\u00ebs virtuale t\u00eb p\u00ebrbashk\u00ebt dhe t\u00eb koherencuar. Koherenca e faqeve t\u00eb memories virtuale sigurohet p\u00ebrmes nj\u00eb protokolli q\u00eb riprodhon n\u00eb host faqet e memories kur ato k\u00ebrkohen p\u00ebr lexim dhe anullon faqet e memories kur ndodhin shkrime. <\/p>\n

Nd\u00ebrveprimi midis hosteve b\u00ebhet p\u00ebrmes nj\u00eb menaxhuesi mesazhesh q\u00eb funksionon n\u00eb nivelin e b\u00ebrtham\u00ebs, duke u transmetuar p\u00ebrmes TCP-socket. V\u00ebrehet se TCP\/IP p\u00ebrdoret p\u00ebr t\u00eb leht\u00ebsuar debuggimin dhe testimin gjat\u00eb procesit t\u00eb zhvillimit. Zhvilluesit e kuptojn\u00eb se, nga pik\u00ebpamja e siguris\u00eb dhe performanc\u00ebs, TCP\/IP nuk \u00ebsht\u00eb m\u00ebnyra m\u00eb e mir\u00eb p\u00ebr t\u00eb transmetuar p\u00ebrmbajtjen e strukturave t\u00eb b\u00ebrtham\u00ebs dhe faqeve t\u00eb memories midis hosteve. T\u00eb gjith\u00eb hostet ku ekzekutohen aplikacione t\u00eb shp\u00ebrndara duhet t\u00eb ken\u00eb nj\u00eb nivel identik besimi. Pas stabilizimit t\u00eb algoritmeve kryesore, do t\u00eb aplikohet nj\u00eb lloj m\u00eb efikas transporti.<\/p>\n

Popcorn po zhvillohet q\u00eb nga viti 2014 si nj\u00eb projekt k\u00ebrkimor p\u00ebr t\u00eb eksploruar mund\u00ebsit\u00eb e krijimit t\u00eb aplikacioneve t\u00eb shp\u00ebrndara, ku rrjedhat mund t\u00eb ekzekutohen n\u00eb node t\u00eb ndryshme n\u00eb sistemet<\/a><\/noindex> e nj\u00ebjta heterogjene llogarit\u00ebse, ku mund t\u00eb kombinohen b\u00ebrthamat mbi baza t\u00eb arkitekturave t\u00eb ndryshme t\u00eb setit t\u00eb komandave (Xeon\/Xeon-Phi, ARM\/x86, CPU\/GPU\/FPGA). Grupi i patch-eve i propozuar p\u00ebr zhvilluesit e b\u00ebrtham\u00ebs Linux mb\u00ebshtet vet\u00ebm ekzekutimin n\u00eb hostet me CPU x86, por ka edhe nj\u00eb variante m\u00eb funksional t\u00eb Popcorn Linux, i cili lejon ekzekutimin e aplikacioneve n\u00eb hostet me arkitektur\u00eb t\u00eb ndryshme CPU (x86 dhe ARM). P\u00ebr t\u00eb p\u00ebrdorur Popcorn n\u00eb mjedise heterogjene, \u00ebsht\u00eb e nevojshme t\u00eb p\u00ebrdoret nj\u00eb kompilator<\/a><\/noindex> baze LLVM. Kur ekzekutohet n\u00eb m\u00ebnyr\u00eb t\u00eb shp\u00ebrndar\u00eb n\u00eb hoste t\u00eb nj\u00ebjt\u00eb arkitekture, rikonstruimi me nj\u00eb kompilator t\u00eb ve\u00e7ant\u00eb nuk \u00ebsht\u00eb i nevojsh\u00ebm.<\/p>\n

\"P\u00ebr<\/a><\/noindex><\/center><\/p>\n

P\u00ebr m\u00eb tep\u00ebr, mund t\u00eb theksohet njoftim<\/a><\/noindex> p\u00ebr nj\u00eb projekt t\u00eb ngjash\u00ebm Telefork<\/a><\/noindex> me implementimin e nj\u00eb prototipi fillestar t\u00eb API-s\u00eb p\u00ebr nisjen e proceseve f\u00ebmij\u00eb n\u00eb kompjuter\u00eb t\u00eb tjer\u00eb n\u00eb klas\u00ebr (si fork(), por transferon procesin e degezuar n\u00eb nj\u00eb kompjuter tjet\u00ebr).
\n Kodi \u00ebsht\u00eb shkruar n\u00eb gjuh\u00ebn Rust dhe deri tani lejon klonimin e vet\u00ebm proceseve m\u00eb t\u00eb thjeshta, t\u00eb cilat nuk p\u00ebrdorin burime sistemike, si skedar\u00ebt. Kur b\u00ebhet thirrja p\u00ebr telefork, memoria dhe strukturat e lidhura me procesin klonohen n\u00eb nj\u00eb host tjet\u00ebr, ku ekzekutohet trajtuesi server (telepad). P\u00ebrmes ptrace, reflektimi i memories s\u00eb procesit serializohet dhe transferohet n\u00eb nj\u00eb host tjet\u00ebr s\u00eb bashku me gjendjen e procesit dhe regjistrat. API gjithashtu lejon ruajtjen e gjendjes s\u00eb procesit n\u00eb nj\u00eb skedar dhe rikthimin e saj p\u00ebrmes tij.<\/p>\n

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

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

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