Linux Enhanced Real Time Clock Support

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Enhanced Real Time Clock Support - Missing Kernel Option

    https://www.linuxquestions.org/questions/linux-newbie-8/enhanced-real-time-clock-support-missing-kernel-option-890308/
    Jul 07, 2011 · When using make menuconfig - under Device Drivers --> Character Devices --> there should be an option with the label "Enhanced Real Time Clock Support" (CONFIG_JS_RTC). The problem is that this option seems to only show up while using the menu method when other options are either enabled or disabled and I've entirely forgotten what should be what.

tvtime: Common problems

    http://tvtime.sourceforge.net/problems.html
    1. Errors about RTC, the Linux real time clock device. Enhanced Real Time Clock support in your kernel can help applications like tvtime improve the smoothness of their output. The kernel module that provides this feature is called rtc, and it is compiled and installed by default on most Linux distributions.

How to use the Real Time Clock in Linux - Toradex

    https://developer.toradex.com/knowledge-base/how-to-use-the-real-time-clock-in-linux
    Jun 11, 2018 · Purpose. This article describes how to use a Real Time Clock (RTC) on Embedded Linux. Real Time Clock in Linux. Two clocks are important in Linux: a ‘hardware clock’, also known as RTC, CMOS or BIOS clock.This is the battery backed clock that keeps time even when the …

Linux As a Real-Time Operating System

    https://www.nxp.com/assets/documents/data/en/white-papers/CWLNXRTOSWP.pdf
    Freescale Semiconductor Linux® as a Real-Time Operating System, Rev. 0 3 1. Executive Summary From 1998 until 2002, Freescale’s engineers developed and integrated the dual-kernel, real-time solutions for Linux® (RTLinux and RTAI) with our Linux board support packages (BSPs). These solutions provide sub-20 microsecond

CONFIG_RTC: Enhanced Real Time Clock Support (legacy PC ...

    https://cateee.net/lkddb/web-lkddb/RTC.html
    CONFIG_RTC: Enhanced Real Time Clock Support (legacy PC RTC driver) General informations. The Linux kernel configuration item CONFIG_RTC has multiple definitions: Enhanced Real Time Clock Support (legacy PC RTC driver) found in drivers/char/Kconfig The configuration item CONFIG_RTC:

RTLinux - Wikipedia

    https://en.wikipedia.org/wiki/RTLinux
    RTLinux is a hard realtime real-time operating system (RTOS) microkernel that runs the entire Linux operating system as a fully preemptive process. The hard real-time property makes it possible to control robots, data acquisition systems, manufacturing plants, and other time-sensitive instruments and machines from RTLinux applications.Available in: English

Low latency howto - AlsaProject

    https://www.alsa-project.org/wiki/Low_latency_howto
    enable enhanced real time clock support (Device Drivers -> Character Devices), ... Exactly how to do this depends on the Linux distribution, but on Debian or Ubuntu use make-kpkg like this: # make-kpkg kernel_image which makes a package that you can then install. After installing the kernel, reboot, and the system should be real-time capable.

Linux Kernel 2.6: the Future of Embedded Computing, Part I ...

    https://www.linuxjournal.com/article/7477
    Mar 26, 2004 · Linux 2.6 introduces many new features that make it an excellent operating system for embedded computing. Among these new features are enhanced real-time performance, easier porting to new computers, support for large memory models, support …

linux - Difference between CLOCK_REALTIME and CLOCK ...

    https://stackoverflow.com/questions/3523442/difference-between-clock-realtime-and-clock-monotonic
    Could you explain the difference between CLOCK_REALTIME and CLOCK_MONOTONIC clocks returned by clock_gettime() on Linux?. Which is a better choice if I need to compute elapsed time between timestamps produced by an external source and the current time?



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