{"id":34105,"date":"2019-10-31T21:56:25","date_gmt":"2019-10-31T18:56:25","guid":{"rendered":"https:\/\/prohoster.info\/blog\/uyazvimosti-mogut-sdelat-protsessory-amd-proizvoditelnee-chipov-konkurenta\/"},"modified":"2019-10-31T21:56:25","modified_gmt":"2019-10-31T18:56:25","slug":"uyazvimosti-mogut-sdelat-protsessory-amd-proizvoditelnee-chipov-konkurenta","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/uyazvimosti-mogut-sdelat-protsessory-amd-proizvoditelnee-chipov-konkurenta","title":{"rendered":"Zranitelnosti mohou u\u010dinit procesory AMD v\u00fdkonn\u011bj\u0161\u00edmi ne\u017e procesory konkurence.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Ned\u00e1vn\u00e9 odhalen\u00ed nov\u00e9 zranitelnosti procesor\u016f Intel nazvan\u00e9 MDS (nebo Zombieload) vyvolalo dal\u0161\u00ed spory o tom, jak\u00fd pokles v\u00fdkonu budou muset sn\u00e1\u0161et u\u017eivatel\u00e9, kte\u0159\u00ed cht\u011bj\u00ed vyu\u017e\u00edt nab\u00edzen\u00e1 hardwarov\u00e1 \u0159e\u0161en\u00ed probl\u00e9m\u016f. Spole\u010dnost Intel zve\u0159ejnila vlastn\u00ed v\u00fdkonov\u00e9 testy<\/a><\/noindex>, kter\u00e9 ukazovaly velmi mal\u00fd vliv opravy na v\u00fdkon, i kdy\u017e byla technologie Hyper-Threading vypnuta. Nicm\u00e9n\u011b, s t\u00edmto n\u00e1zorem nesouhlas\u00ed zdaleka v\u0161ichni. Server Phoronix provedl vlastn\u00ed nez\u00e1visl\u00e9 studie<\/a><\/noindex> probl\u00e9my v Linuxu, a zjistil jsem, \u017ee aplikace opravy pro cel\u00fd ned\u00e1vno odhalen\u00fd komplex procesorov\u00fdch zranitelnost\u00ed vede k pr\u016fm\u011brn\u00e9mu sn\u00ed\u017een\u00ed v\u00fdkonu procesor\u016f Intel o 16 % bez vypnut\u00ed Hyper-Threadingu a o 25 % \u2014 p\u0159i jeho vypnut\u00ed. Na druhou stranu v\u00fdkon procesor\u016f AMD s architekturou Zen+, jak ukazuj\u00ed tyto testy, kles\u00e1 pouze o 3 %.<\/p>\n

\"Zranitelnosti<\/p>\n

Z p\u0159edlo\u017een\u00fdch test\u016f v r\u00e1mci studie lze usoudit, \u017ee pokles v\u00fdkonu procesor\u016f Intel se zna\u010dn\u011b li\u0161\u00ed v z\u00e1vislosti na konkr\u00e9tn\u00ed aplikaci a p\u0159i vypnut\u00ed Hyper-Threading m\u016f\u017ee snadno p\u0159es\u00e1hnout i pades\u00e1tiprocentn\u00ed pokles. Samotn\u00e9 to \u0159\u00edk\u00e1<\/a><\/noindex> spole\u010dnost Apple, kdy\u017e uv\u00e1d\u00ed svou cenu za odstran\u011bn\u00ed Zombieload \u2014 a\u017e 40 %. P\u0159itom Apple, stejn\u011b jako Google, tvrd\u00ed, \u017ee lze syst\u00e9my zalo\u017een\u00e9 na procesorech Intel u\u010dinit pln\u011b bezpe\u010dn\u00fdmi pouze t\u00edmto zp\u016fsobem. Pokud se v\u0161ak nevypne Hyper-Threading, sn\u00ed\u017een\u00ed v\u00fdkonu m\u016f\u017ee b\u00fdt tak\u00e9 velmi znateln\u00e9: v nejhor\u0161\u00edm p\u0159\u00edpad\u011b dosahuje dvojn\u00e1sobn\u00e9 velikosti.<\/p>\n

\"Zranitelnosti<\/p>\n

Je t\u0159eba objasnit, \u017ee testy Phoronix se t\u00fdkaly ov\u011b\u0159en\u00ed vlivu cel\u00e9ho komplexu z\u00e1plat proti v\u0161em ned\u00e1vn\u00fdm zranitelnostem \u2014 Spectre, Meltdown, L1TF a MDS. To znamen\u00e1, \u017ee v tomto p\u0159\u00edpad\u011b hovo\u0159\u00edme o maxim\u00e1ln\u00edm rozd\u00edlu v v\u00fdkonu, kter\u00fd obdr\u017e\u00ed vlastn\u00edci procesor\u016f Intel po aplikaci v\u0161ech rychlostn\u00edch oprav. T\u00edmto se vysv\u011btluje i sn\u00ed\u017een\u00ed v\u00fdkonu, kter\u00e9 bylo zji\u0161t\u011bno u procesor\u016f AMD. A\u010dkoli se MDS jich net\u00fdk\u00e1, \u010dipy AMD jsou n\u00e1chyln\u00e9 k ur\u010dit\u00fdm typ\u016fm zranitelnosti Spectre, co\u017e tak\u00e9 vy\u017eaduje instalaci softwarov\u00fdch oprav. Nicm\u00e9n\u011b nen\u00ed pot\u0159eba \u017e\u00e1dn\u00fdch z\u00e1sadn\u00edch opat\u0159en\u00ed, jako je vypnut\u00ed Hyper-Threadingu.<\/p>\n

Z\u00e1va\u017en\u00e9 zhor\u0161en\u00ed v\u00fdkonu procesor\u016f Intel po aplikaci z\u00e1plat m\u016f\u017ee b\u00fdt rozhoduj\u00edc\u00edm faktorem pro postaven\u00ed spole\u010dnosti na serverov\u00e9m trhu. Zat\u00edmco AMD se p\u0159ipravuje zv\u00fd\u0161it \u00farove\u0148 v\u00fdkonu sv\u00fdmi nov\u00fdmi 7nm procesory EPYC (Rome), v\u00fdkon \u010dip\u016f Intel se neust\u00e1le pohybuje opa\u010dn\u00fdm sm\u011brem. Z\u00e1rove\u0148 nen\u00ed mo\u017en\u00e9 se vzd\u00e1t opravy zranitelnost\u00ed v serverov\u00fdch \u0159e\u0161en\u00edch \u2014 pr\u00e1v\u011b tam p\u0159edstavuj\u00ed hlavn\u00ed nebezpe\u010d\u00ed. Tak m\u00e1 AMD \u0161anci brzy se st\u00e1t dodavatelem v\u00fdkonn\u011bj\u0161\u00edch serverov\u00fdch \u0159e\u0161en\u00ed, co\u017e bude m\u00edt zna\u010dn\u00fd dopad na jej\u00ed postaven\u00ed na serverov\u00e9m trhu, na n\u011bm\u017e se spole\u010dnost pl\u00e1nuje zmocnit 10% pod\u00edlu b\u011bhem n\u00e1sleduj\u00edc\u00edho roku.<\/p>\n

<\/center>
\n\"Zranitelnosti<\/p>\n

U\u017eivatel\u00e9 deskov\u00fdch syst\u00e9m\u016f spot\u0159ebitelsk\u00e9ho r\u00e1zu se mohou celkem snadno vzd\u00e1t vyu\u017e\u00edv\u00e1n\u00ed z\u00e1plat, alespo\u0148 do doby, ne\u017e budou identifikov\u00e1ny potenci\u00e1ln\u011b nebezpe\u010dn\u00e9 sc\u00e9n\u00e1\u0159e vyu\u017eit\u00ed zranitelnost\u00ed. Nicm\u00e9n\u011b, podle test\u016f Phoronix, pokud je procesor Core i7-8700K v p\u016fvodn\u00edm stavu rychlej\u0161\u00ed ne\u017e Ryzen 7 2700X, pr\u016fm\u011brn\u011b o 24 %, po aplikaci oprav se tento n\u00e1skok z\u00fa\u017e\u00ed na 7 %. Pokud se pak postupuje podle nejkonzervativn\u011bj\u0161\u00edch doporu\u010den\u00ed a nav\u00edc se vypne Hyper-Threading, star\u0161\u00ed procesor AMD se uk\u00e1\u017ee b\u00fdt rychlej\u0161\u00ed ne\u017e Core i7-8700K o 4 %.<\/p>\n

<\/p>\n

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Zdroj: 3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041d\u0435\u0434\u0430\u0432\u043d\u0435\u0435 \u0440\u0430\u0441\u043a\u0440\u044b\u0442\u0438\u0435 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u043e\u0431 \u043e\u0447\u0435\u0440\u0435\u0434\u043d\u043e\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 Intel, \u043f\u043e\u043b\u0443\u0447\u0438\u0432\u0448\u0435\u0439 \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 MDS (\u0438\u043b\u0438 Zombieload), \u043f\u043e\u0441\u043b\u0443\u0436\u0438\u043b\u043e \u0441\u0442\u0438\u043c\u0443\u043b\u043e\u043c \u043a \u043e\u0447\u0435\u0440\u0435\u0434\u043d\u043e\u043c\u0443 \u043e\u0431\u043e\u0441\u0442\u0440\u0435\u043d\u0438\u044e \u0441\u043f\u043e\u0440\u043e\u0432 \u043e \u0442\u043e\u043c, \u0441 \u043a\u0430\u043a\u0438\u043c \u043f\u0430\u0434\u0435\u043d\u0438\u0435\u043c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u043f\u0440\u0438\u0434\u0451\u0442\u0441\u044f \u043c\u0438\u0440\u0438\u0442\u044c\u0441\u044f \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f\u043c, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0437\u0430\u0445\u043e\u0442\u044f\u0442 \u0432\u043e\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u0435\u043c\u044b\u043c\u0438 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f\u043c\u0438 \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u044b\u0445 \u043f\u0440\u043e\u0431\u043b\u0435\u043c. \u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Intel \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u0441\u043e\u0431\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0435 \u0442\u0435\u0441\u0442\u044b \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0438\u0440\u043e\u0432\u0430\u043b\u0438 \u043a\u0440\u0430\u0439\u043d\u0435 \u043d\u0435\u0431\u043e\u043b\u044c\u0448\u043e\u0435 \u0432\u043b\u0438\u044f\u043d\u0438\u0435 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0439 \u043d\u0430 \u0431\u044b\u0441\u0442\u0440\u043e\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0435 \u0434\u0430\u0436\u0435 \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u043e\u0442\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 Hyper-Threading. […]<\/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-34105","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\udd47Zranitelnosti mohou u\u010dinit procesory AMD v\u00fdkonn\u011bj\u0161\u00ed ne\u017e \u010dipy konkurence | ProHoster","description":"Ned\u00e1vn\u00e9 odhalen\u00ed dal\u0161\u00ed zranitelnosti procesor\u016f Intel, zn\u00e1m\u00e9 jako MDS (nebo Zombieload), vyvolalo nov\u00e9 vyhrocen\u00ed spor\u016f o tom, s jak\u00fdm poklesem v\u00fdkonu bude t\u0159eba 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\u043a\u043e\u043d\u043a\u0443\u0440\u0435\u043d\u0442\u0430 | ProHoster","og:description":"\u041d\u0435\u0434\u0430\u0432\u043d\u0435\u0435 \u0440\u0430\u0441\u043a\u0440\u044b\u0442\u0438\u0435 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u043e\u0431 \u043e\u0447\u0435\u0440\u0435\u0434\u043d\u043e\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 Intel, \u043f\u043e\u043b\u0443\u0447\u0438\u0432\u0448\u0435\u0439 \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 MDS (\u0438\u043b\u0438 Zombieload), \u043f\u043e\u0441\u043b\u0443\u0436\u0438\u043b\u043e \u0441\u0442\u0438\u043c\u0443\u043b\u043e\u043c \u043a \u043e\u0447\u0435\u0440\u0435\u0434\u043d\u043e\u043c\u0443 \u043e\u0431\u043e\u0441\u0442\u0440\u0435\u043d\u0438\u044e \u0441\u043f\u043e\u0440\u043e\u0432 \u043e \u0442\u043e\u043c, \u0441 \u043a\u0430\u043a\u0438\u043c \u043f\u0430\u0434\u0435\u043d\u0438\u0435\u043c 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