There are also some hints at diags and tuning. The doc describes some sysfs files that may show what is going on. What those hints are depends on which P-state selection algorithm has been applied to the given policy (or to the CPU it corresponds to). If the HWP feature has been enabled, intel_pstate relies on the processor to select P-states by itself, but still it can give hints to the processor’s internal P-state selection logic. It is possible to avoid enabling it by passing the intel_pstate=no_hwp argument to the kernel in the command line. If the processor supports the HWP feature, it will be enabled during the processor initialization and cannot be disabled after that. The following note in the above doc is concerning: ![]() I’m not that familiar with newer Intel CPUs:( Intel P-State throttling document from Intel describing what Intel’s new kernel code does. When it's unplugged the frequency scaling goes back to normal I found out the throttling only happens when the charger is plugged in. If you need any other info please let me know I tried an MX-Linux liveUSB I had laying around and the performance was fine. Setting it to performance isn't helpful anyway. I need to be able to use tlp and whatnot to extend battery life so I can't delete that or just set the CPU to performance and leave it there. I can't find any info online that's really useful. When I simply set the governor to performance I get no improvement. It will not go above that speed and I've tried a lot of suggestions online. The CPU is throttled between 400 and 750 Mhz. ![]() I installed the cpu frequency panel applet a few days ago and just today the laptop slowed down again drastically. So I was having issues with processes using too much CPU. I didn't put this in the hardware part because I'm 100% sure it isn't the hardware. Ubuntu-mate 18.04 on a Dell Latitude 3580. This can be done to conserve battery life, reduce the amount of noise your device is making or ensure that the device is using the lowest amount of power possible on background tasks, though this will vary between devices and operating systems.Linux Bessy 4.15.0-43-generic #46-Ubuntu SMP Thu Dec 6 14:45: x86_64 x86_64 x86_64 GNU/Linux Doing so could actually cause your CPU to overheat, which can damage it.ĭepending on what PC or laptop you own, you should be able to adjust the CPU throttling. While you can manually alter your CPU throttling, we wouldn’t recommend trying to turn the process off altogether. It can be annoying since it does hinder the performance of your device, but usually, if your CPU is throttling too much to the degree where it is noticeable, even during low-intensity tasks, you may need to check on your computer. CPU throttling is also an easy way for users to identify that something may be wrong with their device, which allows people to notice and act on the throttling before the device becomes unfixable. In theory, CPU throttling is not bad and is a safeguard that has been built into your PC or laptop to keep it from accidentally damaging itself. Thermal throttling can be induced by having your PC or laptop on performance mode, having a dirty and undusted fan system or not having the appropriate cooling set up in your PC case. No, thermal throttling is instead what happens to your CPU as a result of poor temperature management, as even though your CPU is dialling back its power use, there is still an issue with overheating. ![]() Is CPU throttling the same as thermal throttling? You can also adjust the Dynamic Frequency Settings manually to ensure a quieter and cooler system. This is especially common in laptops since PCs do not require a long battery life, however, it is used in both to conserve energy and keep the CPU from overheating and from being as loud, since your cooling system and fans also don’t need to be working as hard. So, a laptop that is running Chrome with a few tabs open may dial down its frequency to as low as 1GHz, though if you started up a triple-A game it should go much higher, to its advertised speeds, since the CPU needs to be doing more work. CPU throttling refers to a technology called Dynamic Frequency Scaling and is a technique in which the processor limits the power to conserve battery and use less energy.
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