{"id":102926,"date":"2022-01-09T15:37:28","date_gmt":"2022-01-09T13:37:28","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/%d0%b2%d1%82%d0%be%d1%80%d0%b0%d1%8f-%d0%b2%d0%b5%d1%80%d1%81%d0%b8%d1%8f-%d0%bf%d0%b0%d1%82%d1%87%d0%b5%d0%b9-c-%d1%80%d0%b5%d1%81%d1%82%d1%80%d1%83%d0%ba%d1%82%d1%83%d1%80%d0%b8%d0%b7%d0%b0%d1%86"},"modified":"2022-01-09T15:37:28","modified_gmt":"2022-01-09T13:37:28","slug":"%d0%b2%d1%82%d0%be%d1%80%d0%b0%d1%8f-%d0%b2%d0%b5%d1%80%d1%81%d0%b8%d1%8f-%d0%bf%d0%b0%d1%82%d1%87%d0%b5%d0%b9-c-%d1%80%d0%b5%d1%81%d1%82%d1%80%d1%83%d0%ba%d1%82%d1%83%d1%80%d0%b8%d0%b7%d0%b0%d1%86","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/%d0%b2%d1%82%d0%be%d1%80%d0%b0%d1%8f-%d0%b2%d0%b5%d1%80%d1%81%d0%b8%d1%8f-%d0%bf%d0%b0%d1%82%d1%87%d0%b5%d0%b9-c-%d1%80%d0%b5%d1%81%d1%82%d1%80%d1%83%d0%ba%d1%82%d1%83%d1%80%d0%b8%d0%b7%d0%b0%d1%86","title":{"rendered":"Druh\u00e1 verze patch\u016f s restrukturalizac\u00ed hlavi\u010dkov\u00fdch soubor\u016f j\u00e1dra Linuxu","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Ingo Molnar p\u0159edstavil druhou verzi souboru patch\u016f, kter\u00e1 v\u00fdrazn\u011b zkracuje \u010das pot\u0159ebn\u00fd na p\u0159ebudov\u00e1n\u00ed j\u00e1dra d\u00edky restrukturaci hierarchie hlavi\u010dkov\u00fdch soubor\u016f a sn\u00ed\u017een\u00ed po\u010dtu k\u0159\u00ed\u017eov\u00fdch z\u00e1vislost\u00ed. Nov\u00e1 verze, kter\u00e1 je p\u0159izp\u016fsobena j\u00e1dru 5.16-rc8, se od prvn\u00ed verze, kterou byl navr\u017eena p\u0159ed n\u011bkolika dny, li\u0161\u00ed p\u0159id\u00e1n\u00edm dal\u0161\u00edch optimalizac\u00ed a realizac\u00ed podpory pro p\u0159ebudov\u00e1n\u00ed pomoc\u00ed kompil\u00e1toru Clang. P\u0159i pou\u017eit\u00ed Clangu umo\u017enilo pou\u017eit\u00ed patch\u016f zkr\u00e1tit \u010das p\u0159ebudov\u00e1n\u00ed o 88 % nebo o 77 % v ukazatel\u00edch spot\u0159eby CPU. P\u0159i pln\u00e9m p\u0159ebudov\u00e1n\u00ed j\u00e1dra prost\u0159ednictv\u00edm p\u0159\u00edkazu \"make -j96 vmlinux\" se \u010das p\u0159ebudov\u00e1n\u00ed zkr\u00e1til z 337,788 na 179,773 sekund. <\/p>\n

Nov\u00e1 verze tak\u00e9 \u0159e\u0161\u00ed probl\u00e9m s pluginy GCC, opravuje chyby identifikovan\u00e9 v pr\u016fb\u011bhu po\u010d\u00e1te\u010dn\u00edho posuzov\u00e1n\u00ed a prov\u00e1d\u00ed unifikaci duplicitn\u00edch deklarac\u00ed struktury \"task_struct_per_task\". Krom\u011b toho byla pokra\u010dov\u00e1na optimalizace hlavi\u010dkov\u00e9ho souboru linux\/sched.h a byla provedena optimalizace hlavi\u010dkov\u00fdch soubor\u016f subsyst\u00e9mu RDMA (infiniband), kter\u00e1 d\u00e1le sn\u00ed\u017eila \u010das p\u0159ebudov\u00e1n\u00ed o 9 % ve srovn\u00e1n\u00ed s prvn\u00ed verz\u00ed patch\u016f. Po\u010det C-soubor\u016f j\u00e1dra, kter\u00e9 zahrnuj\u00ed hlavi\u010dkov\u00fd soubor linux\/sched.h, se sn\u00ed\u017eil z 68 % na 36 % ve srovn\u00e1n\u00ed s prvn\u00ed verz\u00ed patch\u016f (z 99 % na 36 % ve srovn\u00e1n\u00ed se z\u00e1kladn\u00edm j\u00e1drem).
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0418\u043d\u0433\u043e \u041c\u043e\u043b\u043d\u0430\u0440 (Ingo Molnar) \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b \u0432\u0442\u043e\u0440\u0443\u044e \u0432\u0435\u0440\u0441\u0438\u044e \u043d\u0430\u0431\u043e\u0440\u0430 \u043f\u0430\u0442\u0447\u0435\u0439, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0433\u043e \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u0441\u043e\u043a\u0440\u0430\u0442\u0438\u0442\u044c \u0432\u0440\u0435\u043c\u044f \u043f\u0435\u0440\u0435\u0441\u0431\u043e\u0440\u043a\u0438 \u044f\u0434\u0440\u0430 \u0437\u0430 \u0441\u0447\u0451\u0442 \u0440\u0435\u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0438\u0437\u0430\u0446\u0438\u0438 \u0438\u0435\u0440\u0430\u0440\u0445\u0438\u0438 \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043e\u0447\u043d\u044b\u0445 \u0444\u0430\u0439\u043b\u043e\u0432 \u0438 \u0441\u043e\u043a\u0440\u0430\u0449\u0435\u043d\u0438\u044f \u0447\u0438\u0441\u043b\u0430 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[…]<\/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-102926","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\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\udd47Druh\u00e1 verze z\u00e1plat s reorganizac\u00ed hlavi\u010dkov\u00fdch soubor\u016f j\u00e1dra Linux | ProHoster","description":"Ingo Molnar p\u0159edstavil druhou verzi sady z\u00e1plat, kter\u00e1 umo\u017e\u0148uje v\u00fdznamn\u011b zkr\u00e1tit \u010das na p\u0159estavbu j\u00e1dra reorganizac\u00ed hierarchie hlavi\u010dkov\u00fdch soubor\u016f a sn\u00ed\u017een\u00edm po\u010dtu vz\u00e1jemn\u00fdch 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