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http://processors.wiki.ti.com/index.php/Linux_Core_Power_Management_User%27s_Guide_(v3.14)
[*] CPU idle PM support [ ] Support multiple cpuidle drivers [*] Ladder governor (for periodic timer tick) -*- Menu governor (for tickless system) ARM CPU Idle Drivers ---- DT Configuration There is no configuration required within the device tree for CPUIdle to function properly.
https://www.linuxsecrets.com/xilinx/CPU%20Idle.html
This page gives an overview of the CPU idledriver which is available as part of the ZynqMP Linux distribution. Paths, files, links and documentation on this page are given relative to the Linux kernel source tree. HW IP features CPU idling for Zynqmp Ultrascale+ MPSoc APU. Features supported in driver CPU idling for Zynqmp Ultrascale+ MPSoc APU.
https://www.xilinx.com/support/answers/69143.html
In Zynq UltraScale+ MPSoC/RFSoC devices, Linux CPU Idle is enabled by default. When enabled, Linux powers down the CPU cores when they are idling (as opposed to WFI). That can cause problems when xsdb is connected.
https://www.linuxplumbersconf.org/2012/wp-content/uploads/2012/09/cpuidle-cluster.pdf
CPU idle for Clusters of CPUs ARM Kernel CPU idle PlumbingConclusion CPU idle: Introducing Cluster Management L.Pieralisi, D.Lezcano, A.Kucheria ... Focus on CPU/Cluster Power Management (PM) Uni ed code in the kernel to support saving and restoring of CPU and Cluster state
https://e2e.ti.com/support/processors/f/791/t/372722?CPU-idle-and-PM-firmware-on-AM3352-random-slowdown
When activating CPU idle support we can see a random slowdown of the system by factor 20-30 (we did a couple of measurements using the tracing infrastructure). Usually handling a timer interrupt takes round about 25us. When the problem triggers this takes up to 650us and theres no idle time left (usually we have 85% idle time)!!
http://processors.wiki.ti.com/index.php/TI-Android-GingerBread-2.3.4-DevKit-2.1_PortingGuides
Low level Suspend Resume Code in arch/arm/mach-omap2/pm34xx.c. CPU Idle. CPU Power Management ---> │ │ [*] CPU idle PM support The default CPU Idle governor is menu governor and the code is located at drivers/cpuidle
https://www.linuxquestions.org/questions/linux-kernel-70/%2A-cpu-idle-pm-support-818171/
Jul 07, 2010 · Server OS: Gentoo Linux Processor: AMD Athlon64 3700 2.4GHZ (Let me know if more info is needed) I need CPU IDLE PM SUPPORT disabled. In 'make menuconfig' of my kernel, I can't disable CPU IDLE PM SUPPORT because something is dependent on it I suppose. Does anyone know what is dependent on it, or can tell me how to find what is dependent on it?
https://e2e.ti.com/support/processors/f/791/t/667525?Linux-AM3352-C1-state-issue
The idle loop is executed when the Linux scheduler has no thread to run. When the idle loop is executed, current 'governor' is called to decide the target C-state. A C-state is used to identify the power state supported through the cpu idle loop. AM335x device support two C-states: 1. MPU WFI. 2. MPU WFI + Bypass MPU DPLL
https://unix.stackexchange.com/questions/361245/what-does-an-idle-cpu-process-do
The idle task is used for process accounting, and also to reduce energy consumption. In Linux, one idle task is created for every processor, and locked to that processor; whenever there’s no other process to run on that CPU, the idle task is scheduled. Time spent in the idle tasks appears as “idle” time in tools such as top. (Uptime is ...
https://monero.stackexchange.com/questions/1359/node-and-mining-in-arm-device
I have an "almost always idle" ARM home server (not a rPi, more powerful) and I was thinking running a monero node in it, plus maybe have it mine if possible/profitable. For the node part, is the monero code compatible with ARM devices? Has anyone actually tried running a monero node in an ARM device?
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