{"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\/es\/blog\/news\/obsuzhdenie-uvelicheniya-chastoty-tajmera-v-yadre-linux-do-1000hz-po-umolchaniyu","title":{"rendered":"Discusi\u00f3n sobre el aumento de la frecuencia del temporizador en el n\u00facleo de Linux a 1000Hz por defecto.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Un ingeniero de Google propuso aumentar la frecuencia de generaci\u00f3n de interrupciones del temporizador en el n\u00facleo de Linux a 1000Hz por defecto, lo que llevar\u00eda a un aumento en la frecuencia de conmutaci\u00f3n de tareas y a una reducci\u00f3n del quantum de tiempo en el planificador de tareas. Actualmente, por defecto, se utiliza 250Hz como un compromiso entre rendimiento, latencias y consumo de energ\u00eda.    <\/p>\n<p>Al utilizar pantallas con una frecuencia de actualizaci\u00f3n de 120Hz, t\u00edpicas de las PC y dispositivos m\u00f3viles modernos, con una frecuencia de temporizador de 250Hz, la imprecisi\u00f3n de cuantificaci\u00f3n del tiempo es aproximadamente la mitad del tiempo de un fotograma, lo que reduce la eficacia de la distribuci\u00f3n de recursos y no permite lograr una relaci\u00f3n \u00f3ptima entre rendimiento y consumo de energ\u00eda. El consumo de energ\u00eda del sistema a baja frecuencia de temporizador puede ser mayor, ya que el mecanismo DVFS (Dynamic Voltage and Frequency Scaling) utiliza una estrategia m\u00e1s agresiva para seleccionar la frecuencia y no ralentizar la ejecuci\u00f3n de tareas.     <\/p>\n<p>Ocurren situaciones en las que una tarea ya ha realizado las operaciones deseadas que requer\u00edan c\u00e1lculos activos, pero el procesador contin\u00faa trabajando a una frecuencia aumentada debido a la finitud del quantum de tiempo que a\u00fan no ha finalizado. Aumentar la frecuencia de conmutaci\u00f3n de tareas puede resultar en una reducci\u00f3n del consumo de energ\u00eda debido a una mayor eficacia de la gesti\u00f3n din\u00e1mica de frecuencia (DVFS), una distribuci\u00f3n m\u00e1s precisa de los intervalos por parte del planificador de tareas, actualizaciones m\u00e1s frecuentes de la estad\u00edstica de carga del CPU y una disminuci\u00f3n del tiempo que las tareas permanecen en espera.    <\/p>\n<p>Otro ingeniero de Google sugiri\u00f3 dejar la frecuencia del temporizador tal como est\u00e1 (250Hz), ya que aumentar la frecuencia de generaci\u00f3n de interrupciones del temporizador puede llevar a un aumento del consumo de energ\u00eda en dispositivos de bajo consumo, como las placas para Internet de las cosas. Seg\u00fan su estimaci\u00f3n, al establecer la frecuencia en 1000Hz, incluso en dispositivos que funcionan con Android, se ha registrado en algunas situaciones un aumento del consumo de energ\u00eda del procesador del 7%. Adem\u00e1s, al aumentar la frecuencia del temporizador, tambi\u00e9n se observa un despertar m\u00e1s frecuente del CPU, ya que a 250Hz, los temporizadores establecidos en intervalos t + 1 ms, t + 2 ms, t + 3 ms y t + 4 ms, se agrupar\u00e1n y llevar\u00e1n a un solo despertar, mientras que a 1000Hz habr\u00e1 cuatro despertares separados.     <\/p>\n<p>El recurso Phoronix realiz\u00f3 una comparaci\u00f3n del rendimiento de PC basados en el CPU AMD Ryzen 9 9950X. La configuraci\u00f3n a 1000Hz result\u00f3 ser m\u00e1s r\u00e1pida en las pruebas de Llama.cpp, nginx, SuperTuxKart, Selenium y en la medici\u00f3n del tiempo de compilaci\u00f3n del n\u00facleo. En las pruebas de Darktable, PostgreSQL, Unvanquished, Xonotic, Blender, SVT-AV1, RawTherapee, el rendimiento fue superior con la configuraci\u00f3n de 250Hz. A 1000Hz, el consumo promedio de energ\u00eda fue de 144.2 W, el m\u00ednimo \u2014 0.18 W, y el m\u00e1ximo \u2014 202.13 W, mientras que a 250Hz: el promedio fue de 144.37 W, el m\u00ednimo 0.07 W, y el m\u00e1ximo \u2014 202 W.      <center><img decoding=\"async\" alt=\"Discusi\u00f3n sobre el aumento de la frecuencia del temporizador en el n\u00facleo de Linux a 1000Hz por defecto.\" src=\"\/wp-content\/uploads\/2025\/02\/cb1809766c6dda7365f5734fb1919a5e.png\" style=\"display:block;margin: 0 auto;\" \/><\/center><br \/>\n<br \/>Fuente: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=62713\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\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 [&hellip;]<\/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<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\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 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