{"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\/sv\/blog\/news\/uyazvimosti-mogut-sdelat-protsessory-amd-proizvoditelnee-chipov-konkurenta","title":{"rendered":"S\u00e5rbarheter kan g\u00f6ra AMD:s processorer mer kraftfulla \u00e4n konkurrentens kretsar","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Den senaste informationen om en ny s\u00e5rbarhet i Intels processorer, k\u00e4nd som MDS (eller Zombieload), har \u00e5terigen v\u00e4ckt debatt om den prestandaf\u00f6rlust som anv\u00e4ndare kommer att tvingas acceptera n\u00e4r de vill \u00e5t den f\u00f6reslagna l\u00f6sningen p\u00e5 h\u00e5rdvaruproblemen. Intel har publicerat sina egna prestandatester<\/a><\/noindex>, som visade p\u00e5 en extremt liten p\u00e5verkan av fixen p\u00e5 hastigheten \u00e4ven vid inaktivering av Hyper-Threading-teknologin. Trots detta h\u00e5ller inte alla med om denna st\u00e5ndpunkt. Webbplatsen Phoronix genomf\u00f6rde sina egna oberoende unders\u00f6kning<\/a><\/noindex> Problem i Linux har visat sig att till\u00e4mpningen av patchar f\u00f6r hela det senaste uppt\u00e4ckta komplexet av processor-s\u00e5rbarheter leder till en genomsnittlig prestandaf\u00f6rlust p\u00e5 16 % utan att st\u00e4nga av Hyper-Threading och 25 % \u2014 med den avst\u00e4ngd. Samtidigt sjunker prestandan hos AMD-processorer med Zen+-arkitekturen, som visar dessa tester, endast med 3 %.<\/p>\n

\"S\u00e5rbarheter<\/p>\n

Fr\u00e5n de tester som presenterades i studien kan man dra slutsatsen att prestandaf\u00f6rlusten f\u00f6r Intels processorer varierar kraftigt beroende p\u00e5 applikationen och kan, vid avst\u00e4ngd Hyper-Threading, enkelt \u00f6verskrida en och en halv g\u00e5ng. Egentligen handlar det h\u00e4r just om s\u00e4ger<\/a><\/noindex> Apple n\u00e4mner att dess kostnad f\u00f6r att \u00e5tg\u00e4rda Zombieload kan n\u00e5 upp till 40 %. B\u00e5de Apple och Google h\u00e4vdar att det enda s\u00e4ttet att g\u00f6ra system baserade p\u00e5 Intel-processorer helt s\u00e4kra \u00e4r att g\u00f6ra s\u00e5. Om man inte st\u00e4nger av Hyper-Threading kan prestandaf\u00f6rlusten ocks\u00e5 vara ganska m\u00e4rkbar: i v\u00e4rsta fall n\u00e5r den en dubbelt s\u00e5 stor omfattning.<\/p>\n

\"S\u00e5rbarheter<\/p>\n

Det b\u00f6r f\u00f6rtydligas att Phoronix-testerna handlade om att unders\u00f6ka p\u00e5verkan av hela paketet av patchar mot alla de senaste s\u00e5rbarheterna \u2014 Spectre, Meltdown, L1TF och MDS. Det inneb\u00e4r att det h\u00e4r handlar om den maximala skillnaden i prestanda som \u00e4gare av Intel-processorer kommer att uppleva efter att ha till\u00e4mpat alla patchar. Detta f\u00f6rklarar ocks\u00e5 den prestandaf\u00f6rlust som observerats hos AMD-processorer. \u00c4ven om MDS inte p\u00e5verkar dem, \u00e4r AMD-chips utsatta f\u00f6r vissa typer av Spectre-s\u00e5rbarhet vilket ocks\u00e5 kr\u00e4ver installation av programvarupatchar. Dock beh\u00f6vs inga radikala \u00e5tg\u00e4rder som att st\u00e4nga av Hyper-Threading f\u00f6r dem.<\/p>\n

En allvarlig prestandaf\u00f6rlust f\u00f6r Intel-processorer efter att patcharna har till\u00e4mpats kan bli en \u00f6desdiger faktor f\u00f6r f\u00f6retagets st\u00e4llning p\u00e5 servermarknaden. Medan AMD f\u00f6rbereder sig f\u00f6r att h\u00f6ja prestandastandarden med sina nya 7-nm EPYC-processorer (Rome), r\u00f6r sig prestandan hos Intel-chipsen stadigt i motsatt riktning. Samtidigt \u00e4r det om\u00f6jligt att avst\u00e5 fr\u00e5n att \u00e5tg\u00e4rda s\u00e5rbarheterna i serverl\u00f6sningar \u2014 just d\u00e4r utg\u00f6r de en stor fara. D\u00e4rf\u00f6r har AMD en chans att snart bli leverant\u00f6r av mer h\u00f6gpresterande serverl\u00f6sningar, vilket kommer att ha en betydande inverkan p\u00e5 dess st\u00e4llning p\u00e5 servermarknaden, d\u00e4r f\u00f6retaget planerar att \u00e5terta en marknadsandel p\u00e5 10 procent under det kommande \u00e5ret.<\/p>\n

<\/center>
\n\"S\u00e5rbarheter<\/p>\n

Anv\u00e4ndare av konsumentniv\u00e5 station\u00e4ra system kan mycket v\u00e4l avst\u00e5 fr\u00e5n att anv\u00e4nda patcharna, \u00e5tminstone tills potentiellt farliga anv\u00e4ndningsscenarier f\u00f6r s\u00e5rbarheterna har identifierats. Enligt Phoronix-testerna, om en Core i7-8700K i sitt ursprungliga skick \u00e4r snabbare \u00e4n en Ryzen 7 2700X med i genomsnitt 24 %, s\u00e5 minskar f\u00f6rdelen till 7 % efter att patcharna har till\u00e4mpats. Om man dessutom f\u00f6ljer de mest konservativa rekommendationerna och st\u00e4nger av Hyper-Threading, kan den \u00e4ldre AMD-processorn bli snabbare \u00e4n Core i7-8700K med 4 %.<\/p>\n

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K\u00e4lla: 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\udd47S\u00e5rbarheter kan g\u00f6ra AMD-processorer mer prestanda \u00e4n konkurrentens chip | ProHoster","description":"Den senaste informationen om en ny s\u00e5rbarhet i Intel-processorer, kallad MDS (eller Zombieload), har varit en stimulans f\u00f6r en ny upptrappning av debatten om den prestandafall som m\u00e5ste 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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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