{"id":121915,"date":"2025-02-13T20:22:13","date_gmt":"2025-02-13T18:22:13","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obsuzhdenie-uvelicheniya-chastoty-tajmera-v-yadre-linux-do-1000hz-po-umolchaniyu"},"modified":"2025-02-13T20:22:13","modified_gmt":"2025-02-13T18:22:13","slug":"obsuzhdenie-uvelicheniya-chastoty-tajmera-v-yadre-linux-do-1000hz-po-umolchaniyu","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/obsuzhdenie-uvelicheniya-chastoty-tajmera-v-yadre-linux-do-1000hz-po-umolchaniyu","title":{"rendered":"Diskusia o zv\u00fd\u0161en\u00ed frekvencie \u010dasova\u010da v jadre Linux na 1000Hz ako predvolen\u00e9ho nastavenia.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

In\u017einier z firmy Google navrhol zv\u00fd\u0161i\u0165 frekvenciu generovania preru\u0161enia od \u010dasova\u010da v jadre Linux na 1000Hz ako predvolen\u00e9 nastavenie, \u010do povedie k zv\u00fd\u0161eniu frekvencie prep\u00ednania \u00faloh a skr\u00e1teniu \u010dasov\u00e9ho kvanta v pl\u00e1nova\u010di \u00faloh. V s\u00fa\u010dasnosti sa ako predvolen\u00e9 pou\u017e\u00edva 250Hz, \u010do je ak\u00fdsi kompromis medzi v\u00fdkonom, oneskoreniami a spotrebou energie. <\/p>\n

Pri pou\u017eit\u00ed displejov s obnovovacou frekvenciou 120Hz, be\u017en\u00fdch pre modern\u00e9 po\u010d\u00edta\u010de a mobiln\u00e9 zariadenia, sa pri frekvencii \u010dasova\u010da 250Hz nepresnos\u0165 kvantovania \u010dasu odhaduje na pribli\u017ene polovicu \u010dasu sn\u00edmky, \u010do zni\u017euje efektivitu pride\u013eovania zdrojov a neumo\u017e\u0148uje dosiahnu\u0165 optim\u00e1lny pomer v\u00fdkonu ku spotrebe energie. Spotreba energie syst\u00e9mov pri n\u00edzkej frekvencii \u010dasova\u010da m\u00f4\u017ee by\u0165 vy\u0161\u0161ia, preto\u017ee mechanizmus DVFS (Dynamick\u00e9 riadenie nap\u00e4tia a frekvencie) pou\u017e\u00edva agres\u00edvnej\u0161iu strat\u00e9giu v\u00fdberu frekvencie, aby nedoch\u00e1dzalo k spoma\u013eovaniu vykon\u00e1vania \u00faloh. <\/p>\n

Nast\u00e1vaj\u00fa situ\u00e1cie, ke\u010f \u00faloha u\u017e vykonala po\u017eadovan\u00e9 oper\u00e1cie, ktor\u00e9 si vy\u017eadovali akt\u00edvne v\u00fdpo\u010dty, ale procesor na\u010falej pracuje na zv\u00fd\u0161enej frekvencii kv\u00f4li kone\u010dnosti \u010dasov\u00e9ho kvanta, ktor\u00e9 e\u0161te neskon\u010dilo. Zv\u00fd\u0161enie frekvencie prep\u00ednania \u00faloh m\u00f4\u017ee vies\u0165 k zn\u00ed\u017eeniu spotreby energie v\u010faka zv\u00fd\u0161enej efektivite dynamick\u00e9ho riadenia frekvencie (DVFS), presnej\u0161iemu rozde\u013eovaniu intervalov pl\u00e1nova\u010dom \u00faloh, \u010dastej\u0161iemu aktualizovaniu \u0161tatist\u00edk za\u0165a\u017eenia CPU a skr\u00e1teniu \u010dasu, po\u010das ktor\u00e9ho s\u00fa \u00falohy v \u010dakaj\u00facom stave. <\/p>\n

In\u00fd in\u017einier z Google navrhol necha\u0165 frekvenciu \u010dasova\u010da tak, ako je (250Hz), preto\u017ee zv\u00fd\u0161enie frekvencie generovania preru\u0161enia \u010dasova\u010da m\u00f4\u017ee vies\u0165 k zv\u00fd\u0161eniu spotreby energie v n\u00edzkoenergetick\u00fdch zariadeniach, ako s\u00fa dosky pre internet vec\u00ed. Pod\u013ea jeho odhadov pri nastaven\u00ed frekvencie na 1000Hz bolo aj na zariadeniach s opera\u010dn\u00fdm syst\u00e9mom Android v niektor\u00fdch situ\u00e1ci\u00e1ch zaznamenan\u00e9 zv\u00fd\u0161enie spotreby energie procesora o 7%. Pri zv\u00fd\u0161en\u00ed frekvencie \u010dasova\u010da sa tie\u017e pozoruje \u010dastej\u0161ie prebudenie CPU, preto\u017ee pri frekvencii 250Hz bud\u00fa \u010dasova\u010de nastaven\u00e9 na intervaly t + 1 ms, t + 2 ms, t + 3 ms a t + 4 ms zoskupen\u00e9 a poved\u00fa k jedn\u00e9mu prebudeniu, zatia\u013e \u010do pri 1000Hz d\u00f4jde k \u0161tyrom samostatn\u00fdm prebudeniam. <\/p>\n

Zdroje Phoronix porovnali v\u00fdkon po\u010d\u00edta\u010dov zalo\u017een\u00fdch na procesoroch AMD Ryzen 9 9950X. Konfigur\u00e1cia so 1000Hz bola r\u00fdchlej\u0161ia v testoch Llama.cpp, nginx, SuperTuxKart, Selenium a pri meran\u00ed doby zostavenia jadra. V testoch Darktable, PostgreSQL, Unvanquished, Xonotic, Blender, SVT-AV1, RawTherapee bol v\u00fdkon vy\u0161\u0161\u00ed pri nastaven\u00ed 250Hz. Pri 1000Hz priemern\u00e1 spotreba energie dosiahla 144,2 W, minim\u00e1lna \u2014 0,18 W, maxim\u00e1lna \u2014 202,13 W, zatia\u013e \u010do pri 250Hz: priemern\u00e1 144,37 W, minim\u00e1lna 0,07 W, maxim\u00e1lna \u2014 202 W.

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

\u0418\u043d\u0436\u0435\u043d\u0435\u0440 \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Google \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0438\u043b \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u0447\u0430\u0441\u0442\u043e\u0442\u0443 \u0433\u0435\u043d\u0435\u0440\u0430\u0446\u0438\u0438 \u043f\u0440\u0435\u0440\u044b\u0432\u0430\u043d\u0438\u0439 \u043e\u0442 \u0442\u0430\u0439\u043c\u0435\u0440\u0430 \u0432 \u044f\u0434\u0440\u0435 Linux \u0434\u043e 1000Hz \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e, \u0447\u0442\u043e \u043f\u0440\u0438\u0432\u0435\u0434\u0451\u0442 \u043a \u0443\u0432\u0435\u043b\u0438\u0447\u0435\u043d\u0438\u044e \u0447\u0430\u0441\u0442\u043e\u0442\u044b \u043f\u0435\u0440\u0435\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u0437\u0430\u0434\u0430\u0447 \u0438 \u0443\u043c\u0435\u043d\u044c\u0448\u0435\u043d\u0438\u044e \u043a\u0432\u0430\u043d\u0442\u0430 \u0432\u0440\u0435\u043c\u0435\u043d\u0438 \u0432 \u043f\u043b\u0430\u043d\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0435 \u0437\u0430\u0434\u0430\u0447. \u0412 \u0434\u0430\u043d\u043d\u044b\u0439 \u043c\u043e\u043c\u0435\u043d\u0442 \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f 250Hz, \u043a\u0430\u043a \u043d\u0435\u043a\u0438\u0439 \u043a\u043e\u043c\u043f\u0440\u043e\u043c\u0438\u0441\u0441 \u043c\u0435\u0436\u0434\u0443 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c\u044e, \u0437\u0430\u0434\u0435\u0440\u0436\u043a\u0430\u043c\u0438 \u0438 \u044d\u043d\u0435\u0440\u0433\u043e\u043f\u043e\u0442\u0440\u0435\u0431\u043b\u0435\u043d\u0438\u0435\u043c. \u041f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u0434\u0438\u0441\u043f\u043b\u0435\u0435\u0432 \u0441 \u0447\u0430\u0441\u0442\u043e\u0442\u043e\u0439 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f 120Hz, \u0442\u0438\u043f\u0438\u0447\u043d\u044b\u0445 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":121916,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-121915","post","type-post","status-publish","format-standard","has-post-thumbnail","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\udd47Diskusia o zv\u00fd\u0161en\u00ed frekvencie \u010dasova\u010da v jadre Linux na 1000Hz ako predvolenej hodnoty | ProHoster","description":"In\u017einier zo spolo\u010dnosti Google navrhol zv\u00fd\u0161i\u0165 frekvenciu generovania preru\u0161enia z \u010dasova\u010da v jadre Linux 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