Ve verzi Fedora 42, pl\u00e1novan\u00e9 na konci dubna, se navrhuje umo\u017enit v\u00fdvoj\u00e1\u0159\u016fm zahrnout do bal\u00ed\u010dk\u016f dal\u0161\u00ed varianty spustiteln\u00fdch soubor\u016f, kter\u00e9 byly sestaveny s optimalizacemi pro mikroarchitektury x86-64-v2, x86-64-v3 a x86-64-v4. Je uvedeno, \u017ee Fedora nad\u00e1le sestavuje bal\u00ed\u010dky pro architekturu x86-64-v1, zat\u00edmco CentOS vyu\u017e\u00edv\u00e1 architekturu x86-64-v2 a RHEL 10 \u2014 x86-64-v3. V\u011bt\u0161inou n\u00e1r\u016fst v\u00fdkonu p\u0159i sestavov\u00e1n\u00ed pro tyto architektury nep\u0159esahuje 10 %, ale v n\u011bkter\u00fdch situac\u00edch m\u016f\u017ee v\u00fdrazn\u011b zlep\u0161it v\u00fdkon (a\u017e o 120 %). N\u00e1vrh zat\u00edm nebyl schv\u00e1len v\u00fdborem FESCo (Fedora Engineering Steering Committee), kter\u00fd odpov\u00edd\u00e1 za technickou \u010d\u00e1st v\u00fdvoje distribuce Fedora. <\/p>\n
Ve Fedo\u0159e ji\u017e existuje mo\u017enost dod\u00e1n\u00ed dal\u0161\u00edch knihoven optimalizovan\u00fdch pro roz\u0161\u00ed\u0159en\u00e9 verze architektury x86_64, a tuto mo\u017enost pl\u00e1nuj\u00ed nyn\u00ed roz\u0161\u00ed\u0159it na spustiteln\u00e9 soubory. Sta\u017een\u00ed optimalizovan\u00fdch realizac\u00ed knihoven zaji\u0161\u0165uje dynamick\u00fd linker, kter\u00fd kontroluje p\u0159\u00edtomnost dal\u0161\u00edch variant v podadres\u00e1\u0159\u00edch glibc-hwcaps, um\u00edst\u011bn\u00fdch v oblastech FS, je\u017e jsou prohled\u00e1v\u00e1ny p\u0159i hled\u00e1n\u00ed knihoven (nap\u0159\u00edklad \/usr\/lib64\/glibc-hwcaps\/x86-64-v2). <\/p>\n
V p\u0159\u00edpad\u011b spustiteln\u00fdch soubor\u016f se navrhuje pou\u017e\u00edt vrstvu hwcaps-loader, kter\u00e1 bude vyb\u00edrat a spou\u0161t\u011bt variantu spustiteln\u00e9ho souboru odpov\u00eddaj\u00edc\u00ed mo\u017enostem sou\u010dasn\u00e9ho syst\u00e9mu. Pro bal\u00ed\u010dky dod\u00e1vaj\u00edc\u00ed n\u011bkolik variant spustiteln\u00fdch soubor\u016f se doporu\u010duje tuto vrstvu vystavit prost\u0159ednictv\u00edm symbolick\u00e9ho odkazu. Rozhodnut\u00ed o p\u0159id\u00e1n\u00ed dodate\u010dn\u011b optimalizovan\u00fdch spustiteln\u00fdch soubor\u016f budou p\u0159ij\u00edmat spr\u00e1vci, v z\u00e1vislosti na v\u00fdsledc\u00edch testov\u00e1n\u00ed v\u00fdkonu konkr\u00e9tn\u00edch bal\u00ed\u010dk\u016f. <\/p>\n
Verze x86-64-v* ur\u010duj\u00ed neofici\u00e1ln\u00ed zp\u016fsob identifikace \u0159ez\u016f stavu mikroarchitektury, pokr\u00fdvaj\u00edc\u00edch ur\u010dit\u00e9 sady roz\u0161\u00ed\u0159en\u00ed: <\/p>\n
D\u00e1le m\u016f\u017eeme zm\u00ednit nab\u00eddku na unifikaci aktualizac\u00ed bootloader\u016f grub a shim v atom\u00e1rn\u00edch a b\u011b\u017en\u00fdch verz\u00edch Fedora. M\u00edsto aktualizace obsahu adres\u00e1\u0159\u016f \/boot a \/boot\/efi pomoc\u00ed skriptu b\u011bhem instalace rpm bal\u00ed\u010dku se navrhuje k aktualizaci bootloaderu pou\u017e\u00edt n\u00e1stroj bootupd, kter\u00fd se ji\u017e pou\u017e\u00edv\u00e1 v atom\u00e1rn\u011b aktualizovan\u00fdch verz\u00edch Fedora. Obsah rpm bal\u00ed\u010dk\u016f s bootloadery by se m\u011bl instalovat nikoliv p\u0159\u00edmo do adres\u00e1\u0159\u016f \/boot a \/boot\/efi, ale do samostatn\u00e9ho adres\u00e1\u0159e uvnit\u0159 odd\u00edlu \/usr, po \u010dem\u017e by se obsah \/boot a \/boot\/efi m\u011bl synchronizovat s t\u00edmto adres\u00e1\u0159em. Tento p\u0159\u00edstup umo\u017en\u00ed vytvo\u0159it z\u00e1lo\u017en\u00ed variantu spou\u0161t\u011bn\u00ed, kterou lze pou\u017e\u00edt pro n\u00e1vrat k star\u00e9 konfiguraci v p\u0159\u00edpad\u011b probl\u00e9m\u016f po aktualizaci bootloaderu. \u0412 \u0432\u044b\u043f\u0443\u0441\u043a\u0435 Fedora 42, \u043d\u0430\u043c\u0435\u0447\u0435\u043d\u043d\u044b\u0439 \u043d\u0430 \u043a\u043e\u043d\u0435\u0446 \u0430\u043f\u0440\u0435\u043b\u044f, \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043e \u0440\u0430\u0437\u0440\u0435\u0448\u0438\u0442\u044c \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0430\u044e\u0449\u0438\u043c \u0432\u043a\u043b\u044e\u0447\u0430\u0442\u044c \u0432 \u043f\u0430\u043a\u0435\u0442\u044b \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u044b \u0438\u0441\u043f\u043e\u043b\u043d\u044f\u0435\u043c\u044b\u0445 \u0444\u0430\u0439\u043b\u043e\u0432, \u0441\u043e\u0431\u0440\u0430\u043d\u043d\u044b\u0435 \u0441 \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435\u043c \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u0439 \u0434\u043b\u044f \u043c\u0438\u043a\u0440\u043e\u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440 x86-64-v2, x86-64-v3 \u0438 x86-64-v4. \u041e\u0442\u043c\u0435\u0447\u0430\u0435\u0442\u0441\u044f, \u0447\u0442\u043e Fedora \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u0435\u0442 \u0441\u043e\u0431\u0438\u0440\u0430\u0442\u044c \u043f\u0430\u043a\u0435\u0442\u044b \u0434\u043b\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b x86-64-v1, \u0432 \u0442\u043e \u0432\u0440\u0435\u043c\u044f \u043a\u0430\u043a CentOS \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 \u043f\u0440\u0438 \u0441\u0431\u043e\u0440\u043a\u0435 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0443 x86-64-v2, \u0430 RHEL 10 — x86-64-v3. \u0412 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Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"