{"id":183759,"date":"2026-10-12T16:53:43","date_gmt":"2026-10-12T14:53:43","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/linus-torvalds-eksperimentiruet-s-generacziej-izmenenij-k-yadru-cherez-ai"},"modified":"2026-10-12T16:53:48","modified_gmt":"2026-10-12T14:53:48","slug":"linus-torvalds-experiments-with-ai-generated-kernel-changes","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/linus-torvalds-experiments-with-ai-generated-kernel-changes","title":{"rendered":"Linus Torvalds experimentuje s generov\u00e1n\u00edm zm\u011bn v j\u00e1d\u0159e pomoc\u00ed AI","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Linus Torvalds p\u0159ipravil sadu patch\u016f pro subsyst\u00e9m spr\u00e1vy pam\u011bti v j\u00e1d\u0159e Linux, kter\u00e9 implementuj\u00ed optimalizaci pro \u010dten\u00ed mal\u00fdch blok\u016f dat z str\u00e1nkov\u00e9ho cache bez atomick\u00e9 zm\u011bny po\u010d\u00edtadla odkaz\u016f (refcount) ve struktu\u0159e folio. V textu commitu je uvedeno, \u017ee zm\u011bny, souvisej\u00edc\u00ed testy a n\u00e1vrh pozn\u00e1mky byly vytvo\u0159eny AI asistentem Claude Code pod dohledem Torvaldse. Zm\u011bna byla p\u0159id\u00e1na do samostatn\u00e9 v\u011btve j\u00e1dra noref-filemap-read-with-llm a zat\u00edm nen\u00ed jasn\u00e9, zda bude p\u0159evedena do hlavn\u00ed v\u011btve nebo zda jde pouze o intern\u00ed experiment.<\/p>\n

P\u0159i testov\u00e1n\u00ed se d\u00edky patch\u016fm poda\u0159ilo zv\u00fd\u0161it propustnost \u010dten\u00ed mal\u00fdch soubor\u016f v konfiguraci se 8 vl\u00e1kny z 9,9\u201310,4 na 30\u201333 milion\u016f operac\u00ed za sekundu (n\u00e1r\u016fst t\u0159ikr\u00e1t), se 4 vl\u00e1kny \u2014 z 8,9\u201311,6 na 25\u201326 milion\u016f\/sec (n\u00e1r\u016fst dvojn\u00e1sobn\u011b), a p\u0159i jednovl\u00e1knov\u00e9m zat\u00ed\u017een\u00ed z 7,9\u20138,1 na 8,8\u20138,9 milion\u016f\/sec. N\u00e1r\u016fst v\u00fdkonu lze vysv\u011btlit t\u00edm, \u017ee p\u0159i sou\u010dasn\u00e9m p\u0159\u00edstupu k str\u00e1nkov\u00e9mu cache doch\u00e1z\u00ed k siln\u00e9 konkurenci mezi vl\u00e1kny p\u0159i p\u0159\u00edstupu k cache. Nap\u0159\u00edklad kdy\u017e se 8 vl\u00e1ken sna\u017e\u00ed sou\u010dasn\u011b \u010d\u00edst po 16 bajtech dat, 99,92 % \u010dasu se tr\u00e1v\u00ed nikoli \u010dten\u00edm, ale \u010dek\u00e1n\u00edm na p\u0159\u00edstup k po\u010d\u00edtadlu odkaz\u016f.<\/p>\n

V patchi pro zaji\u0161t\u011bn\u00ed spr\u00e1vnosti dat m\u00edsto nastavov\u00e1n\u00ed jednotliv\u00fdch z\u00e1mk\u016f, zm\u011bn po\u010d\u00edtadel odkaz\u016f nebo mezipam\u011bti se pou\u017e\u00edv\u00e1 obchvatn\u00fd variant, kter\u00fd vyu\u017e\u00edv\u00e1 odlo\u017een\u00e9 uvoln\u011bn\u00ed pam\u011bti se synchronizac\u00ed pomoc\u00ed mechanismu RCU (Read-Copy-Update). Navrhovan\u00e1 metoda v patchi zaru\u010duje, \u017ee str\u00e1nka pam\u011bti nebude fyzicky uvoln\u011bna, dokud \u010dtec\u00ed vl\u00e1kno nedokon\u010d\u00ed kop\u00edrov\u00e1n\u00ed dat.
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Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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