{"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\/et\/blog\/news\/obsuzhdenie-uvelicheniya-chastoty-tajmera-v-yadre-linux-do-1000hz-po-umolchaniyu","title":{"rendered":"Arutelu Linuxi tuuma taimeri sageduse t\u00f5stmisest 1000Hz-le vaikimisi","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Google'i insener pakkus v\u00e4lja tuuma taimeri katkestuste generaatori sageduse suurendamise vaikimisi 1000Hz-le, mis toob kaasa \u00fclesannete vahetuse sageduse suurenemise ja \u00fclesannete planeerimise aja kvanthi v\u00e4hendamise. Praegu kasutatakse vaikimisi 250Hz, mis on kompromiss j\u00f5udluse, viivituste ja energiatarbimise vahel. <\/p>\n

120Hz v\u00e4rskendussagedusega ekraanide kasutamisel, mis on t\u00fc\u00fcpilised kaasaegsetele arvutitele ja mobiilsetele seadmetele, on 250Hz taimeri sageduse puhul ajakvantisatsiooni ebat\u00e4psus umbes pool kaadriaega, mis v\u00e4hendab ressursside jaotamise efektiivsust ja ei v\u00f5imalda saavutada optimaalset j\u00f5udluse ja energia tarbimise suhet. Madala taimeri sageduse korral v\u00f5ivad s\u00fcsteemide energiatarbimine olla suurem, kuna DVFS (d\u00fcnaamiline pinge ja sageduse skaleerimine) mehhanism kasutab agressiivsemat sageduse valiku strateegiat, et mitte aeglustada \u00fclesannete t\u00e4itmist. <\/p>\n

Tekkida v\u00f5ivad olukorrad, kus \u00fclesanne on juba soovitud toimingud, mis n\u00f5udsid aktiivseid arvutusi, t\u00e4itnud, kuid protsessor t\u00f6\u00f6tab endiselt k\u00f5rgendatud sagedusel, kuna ajakvanti ei ole veel l\u00f5ppenud. \u00dclesannete vahetamise sageduse suurendamine v\u00f5ib v\u00e4hendada energiatarbimist t\u00e4nu d\u00fcnaamilise sageduse halduse (DVFS) efektiivsuse suurenemisele, t\u00e4psemale \u00fclesannete planeerimise ajavahemike jaotamisele, sagedasemale CPU koormuse statistika v\u00e4rskendamisele ning \u00fclesannete ooteoleku kestuse v\u00e4henemisele. <\/p>\n

Teine Google'i insener soovitas j\u00e4tta taimeri sageduse 250Hz-ks, kuna taimeri katkevuse sageduse t\u00f5stmine v\u00f5ib kaasa tuua suurenenud energiatarbimise madala energiaklassi seadmetes, n\u00e4iteks asjade interneti jaoks m\u00f5eldud tehnikates. Tema hinnangul, kui taimeri sagedus on seatud 1000Hz-ks, on m\u00f5nede Android-seadmete puhul teatatud, et protsessori energiatarbimine suureneb 7% v\u00f5rra. Samuti t\u00f5statub sageduse t\u00f5stmisel CPU sagedasem \u00e4rkamine, kuna sagedusega 250Hz m\u00e4\u00e4ratud taimerid, mis on intervalidega t + 1 ms, t + 2 ms, t + 3 ms ja t + 4 ms, on gruppeeritud ja toovad kaasa \u00fche \u00e4rkamise, kuid 1000Hz korral toimuvad neli eraldi \u00e4rkamist. <\/p>\n

Phoronix tegi v\u00f5rdluse AMD Ryzen 9 9950X p\u00f5hist PC j\u00f5udluses. 1000Hz konfiguratsioon osutus kiiremaks Llama.cpp, nginx, SuperTuxKart, Selenium testides ning tuuma kompilatsiooni aja m\u00f5\u00f5tmisel. Darktable, PostgreSQL, Unvanquished, Xonotic, Blender, SVT-AV1, RawTherapee testides oli j\u00f5udlus k\u00f5rgem 250Hz seadistusel. 1000Hz juures oli keskmine energiatarve 144.2 W, minimaalne \u2014 0.18 W, maksimaalne \u2014 202.13 W, ning 250Hz puhul: keskmine 144.37 W, minimaalne 0.07 W, maksimaalne \u2014 202 W.

\"Arutelu<\/center>
\n
Allikas: 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 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