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https://www.kernel.org/doc/html/latest/timers/highres.html
This ensures also that a kernel which is configured for high resolution timers can run on a system which lacks the necessary hardware support. The high resolution timer code does not support SMP machines which have only global clock event devices. The support of such hardware would involve IPI calls when an interrupt happens.
https://docs.microsoft.com/en-us/windows/win32/sysinfo/acquiring-high-resolution-time-stamps
Windows provides APIs that you can use to acquire high-resolution time stamps or measure time intervals. The primary API for native code is QueryPerformanceCounter (QPC). For device drivers, the kernel-mode API is KeQueryPerformanceCounter. For managed code, the System.Diagnostics.Stopwatch class uses QPC as its precise time basis.
https://rt.wiki.kernel.org/index.php/High_resolution_timers
When the high resolution timers are enabled in the Linux kernel, then nanosleep, itimers and posix timers provide the high resolution mode without changes to the source code. Dynamic priority support for high resolution timers (extension available in the realtime preemption patch)
https://stackoverflow.com/questions/7770353/high-resolution-timing-in-kernel
1 Answer 1. Assuming the kernel you are running has the Hi-Res timer support turned on (it is a build time config option) and that you have a proper timer hardware which can provide the needed support to raise an interrupt in such granularity, you can use the in kernel hrtimer API to register a timer …
https://github.com/zephyrproject-rtos/zephyr/issues/6498
Mar 07, 2018 · In addition to a high-resolution timer API, I imagine users that have the high-frequency clock always-on anyway would like to be able to Kconfigure "_arch_k_cycle_get_32" to use the high-frequency clock instead of the low-frequency clock.
https://stackoverflow.com/questions/8609142/high-resolution-timer-support-on-64-bit-linux
I'm trying to enable high resolution timer support on 2.6.39.1 64-bit Linux. To do this, I first set CONFIG_HIGH_RES_TIMERS=y in .config. Also, the output of grep HZ .config is: #
https://www.linuxquestions.org/questions/linux-kernel-70/high-resolution-timer-support-706471/
Nov 20, 2009 · Probably not the easiest of all reading, but it might be what you are looking for Ok, it seems I can't post a link because it's my first post So, type "Kernel Documentation" in google and the first link will be for the Documentation page of kernel.org As for the HPET, I think most modern computer have one but you can make sure by checking your bios I think.
https://www.at91.com/viewtopic.php?t=27347
May 13, 2019 · If you are not going to permit the kernel to manage one TC peripheral as its clocksource, then you have broken the AT91 implementation of high resolution timers. You have to revert to the legacy scheme of a common tick and timer resolution. The maximum tick rate of 1000 Hz means a timer resolution of 1 millisecond.
https://en.wikipedia.org/wiki/High_Precision_Event_Timer
The High Precision Event Timer is a hardware timer used in personal computers. It was developed jointly by Intel and Microsoft and has been incorporated in PC chipsets since circa 2005. Formerly referred to by Intel as a Multimedia Timer, the term HPET was selected to avoid confusion with the software multimedia timers introduced in the MultiMedia Extensions to Windows 3.0. Older operating systems that do not support a hardware HPET …
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