{"id":105185,"date":"2022-09-27T21:36:41","date_gmt":"2022-09-27T19:36:41","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-yadre-linux-najdena-zabytaya-zaplata-vliyayushhaya-na-proizvoditelnost-cpu-amd"},"modified":"2022-09-27T21:36:41","modified_gmt":"2022-09-27T19:36:41","slug":"v-yadre-linux-najdena-zabytaya-zaplata-vliyayushhaya-na-proizvoditelnost-cpu-amd","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/v-yadre-linux-najdena-zabytaya-zaplata-vliyayushhaya-na-proizvoditelnost-cpu-amd","title":{"rendered":"Linuxi tuumast leiti unustatud plaastrite m\u00f5ju AMD CPU j\u00f5udlusele","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Linuxi 6.0 tuumas, mille v\u00e4ljaandmine on planeeritud j\u00e4rgmiseks esmasp\u00e4evaks, on vastu v\u00f5etud muudatus, mis lahendab probleemid AMD Zen protsessoritega s\u00fcsteemide j\u00f5udluses. J\u00f5udluse languse p\u00f5hjuseks osutus 20 aastat tagasi lisatud kood, mis oli m\u00f5eldud m\u00f5nede kiipsete riistvaraliste probleemide ringi juurdep\u00e4\u00e4suks. Riistvaraline probleem on juba ammu lahendatud ja ei esine uuemate kiipsetes, kuid vana lahendus unustati ning see on kaasa toonud j\u00f5udluse languse kaasaegsetel AMD CPU-del p\u00f5hinevates s\u00fcsteemides. Uued Intel CPU-d sisaldavad vana lahendust, kuna ACPI-le p\u00e4\u00e4seb ligi eraldi intel_idle draiveri kaudu, mitte \u00fcldise processor_idle draiveri kaudu. <\/p>\n

Lahendus lisati tuuma m\u00e4rtsis 2002, et blokeerida vea esinemist kiipsetes, mis tulenes vale seisundi oote (idle) seadistamisest STPCLK# signaali t\u00f6\u00f6tlemise viibimise t\u00f5ttu. Probleemi lahendamiseks ACPI rakenduses lisati t\u00e4iendav WAIT k\u00e4sk, mis aeglustas protsessorit, et kiips\u00fcsteem saaks j\u00f5uda ooteseisundisse. AMD Zen3 protsessoritega tehtud profili loomisel, kasutades IBS (Instruction-Based Sampling) k\u00e4ske, leiti, et protsessor kulutab m\u00e4rkimisv\u00e4\u00e4rse osa ajast tegelemiseks, mis viib vale koormuse t\u00f5lgendamiseni ja s\u00fcvapuhkeseisundite (C-State) m\u00e4\u00e4ramiseni cpuidle t\u00f6\u00f6tleja kaudu. <\/p>\n

Sarnane k\u00e4itumine kajastub j\u00f5udluse languses koormustes, kus vahelduvad sageli ooteseisundi (idle) ja aktiivsuse (busy) seisundid. N\u00e4iteks, kui kasutada pat\u0161i, mis keelab ringkonnak\u00e4igu, siis tbench'i keskmised tulemused t\u00f5usevad 32191 MB\/s-lt 33805 MB\/s-le.
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u044f\u0434\u0440\u043e Linux 6.0, \u0440\u0435\u043b\u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u043e\u0436\u0438\u0434\u0430\u0435\u0442\u0441\u044f \u0432 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u0439 \u043f\u043e\u043d\u0435\u0434\u0435\u043b\u044c\u043d\u0438\u043a, \u043f\u0440\u0438\u043d\u044f\u0442\u043e \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0435, \u0440\u0435\u0448\u0430\u044e\u0449\u0435\u0435 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u0441 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c\u044e \u0441\u0438\u0441\u0442\u0435\u043c \u043d\u0430 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430\u0445 AMD Zen. \u0418\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u043e\u043c \u043f\u0430\u0434\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u043e\u043a\u0430\u0437\u0430\u043b\u0441\u044f \u043a\u043e\u0434, \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u0439 20 \u043b\u0435\u0442 \u043d\u0430\u0437\u0430\u0434 \u0434\u043b\u044f \u043e\u0431\u0445\u043e\u0434\u0430 \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u0432 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0447\u0438\u043f\u0441\u0435\u0442\u0430\u0445. \u0410\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u0430\u044f \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0434\u0430\u0432\u043d\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0438 \u043d\u0435 \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0432 \u0430\u043a\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445 \u0447\u0438\u043f\u0441\u0435\u0442\u0430\u0445, \u043d\u043e \u0441\u0442\u0430\u0440\u044b\u0439 \u043e\u0431\u0445\u043e\u0434 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u0431\u044b\u043b \u0437\u0430\u0431\u044b\u0442 \u0438 \u0441\u0442\u0430\u043b […]<\/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-105185","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\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\udd47Linuxi tuumas leiti unustatud plaaster, mis m\u00f5jutab AMD CPU j\u00f5udlust | ProHoster","description":"Linuxi 6.0 tuumas, mille v\u00e4ljaandmine on planeeritud j\u00e4rgmiseks esmasp\u00e4evaks, on vastu v\u00f5etud muudatus, mis lahendab probleemid AMD Zen protsessoritega s\u00fcsteemide 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AMD | ProHoster","og:description":"\u0412 \u044f\u0434\u0440\u043e Linux 6.0, \u0440\u0435\u043b\u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u043e\u0436\u0438\u0434\u0430\u0435\u0442\u0441\u044f \u0432 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u0439 \u043f\u043e\u043d\u0435\u0434\u0435\u043b\u044c\u043d\u0438\u043a, \u043f\u0440\u0438\u043d\u044f\u0442\u043e \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0435, \u0440\u0435\u0448\u0430\u044e\u0449\u0435\u0435 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u0441 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c\u044e \u0441\u0438\u0441\u0442\u0435\u043c \u043d\u0430 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430\u0445 AMD 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