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-   -   CPU fluctuation a sign of what? (https://www.techsupportalert.com/freeware-forum/linux/17115-cpu-fluctuation-sign-of-what.html)

danielson 13. Feb 2018 10:49 PM

CPU fluctuation a sign of what?
 
Is CPU fluctuation sign of incompatibilities?

System: Host: dan Kernel: 4.13.0-1-amd64 x86_64 bits: 64 Desktop: Xfce 4.12.3
Distro: MX-17.b3_x64 Horizon November 29, 2017
Machine: Device: laptop System: Hewlett-Packard product: HP EliteBook 8460p v: A0001D02 serial: N/A
Mobo: Hewlett-Packard model: 161C v: KBC Version 97.4E serial: N/A
BIOS: Hewlett-Packard v: 68SCF Ver. F.65 date: 04/06/2017
Battery BAT0: charge: 39.1 Wh 98.7% condition: 39.6/39.6 Wh (100%)
CPU: Dual core Intel Core i5-2520M (-MT-MCP-) cache: 3072 KB
clock speeds: max: 3200 MHz 1: 2494 MHz 2: 2494 MHz 3: 2494 MHz 4: 2494 MHz
Graphics: Card: Advanced Micro Devices [AMD/ATI] Seymour [Radeon HD 6400M/7400M Series]
Display Server: x11 (X.Org 1.19.2 )
drivers: ati,radeon (unloaded: modesetting,fbdev,vesa)
Resolution: 1600x900@60.00hz, 1680x1050@59.95hz
OpenGL: renderer: Gallium 0.4 on AMD CAICOS (DRM 2.50.0 / 4.13.0-1-amd64, LLVM 3.9.1)
version: 3.3 Mesa 13.0.6
Audio: Card-1 Intel 6 Series/C200 Series Family High Def. Audio Controller
driver: snd_hda_intel
Card-2 Advanced Micro Devices [AMD/ATI] Caicos HDMI Audio [Radeon HD 6450 / 7450/8450/8490 OEM / R5 230/235/235X OEM]
driver: snd_hda_intel
Card-3 Logitech Headset H390 driver: USB Audio
Sound: Advanced Linux Sound Architecture v: k4.13.0-1-amd64
Network: Card-1: Intel 82579LM Gigabit Network Connection driver: e1000e
IF: eth0 state: up speed: 100 Mbps duplex: full mac: e4:11:5b:26:66:28
Card-2: Intel Centrino Advanced-N 6205 [Taylor Peak] driver: iwlwifi
IF: wlan0 state: down mac: da:c4:0a:e4:7d:a7
Drives: HDD Total Size: 240.1GB (2.6% used)
ID-1: /dev/sda model: PNY_CS1311_240GB size: 240.1GB
Partition: ID-1: / size: 55G used: 5.8G (11%) fs: btrfs dev: /dev/sda3
Sensors: System Temperatures: cpu: 55.0C mobo: 52.0C gpu: 55.5
Fan Speeds (in rpm): cpu: N/A
Info: Processes: 237 Uptime: 2:39 Memory: 3030.0/16001.3MB Client: Shell (init) inxi: 2.3.54

torres-no-tan-magnifico 14. Feb 2018 01:56 PM

How long have you had the current CPU? Have you ever cleaned the CPU fan? Is CPU temperature within the correct operating range? Also, try running Memtest to see if your PC's memory is OK.
My CPU is running at 34 C (Intel 2 core Quad Q8400) after I recently cleared a lot of dust from the fan.
NB If you do clean the dust, use dust-off and not a brush or vacuum cleaner as any static discharge could fry your CPU!
I didn't see any mention of your PSU: this is a really crucial part of any PC setup. This link will help you calculate whether or not you have the right PSU for your system: https://outervision.com/power-supply-calculator

HTH

Torres

MidnightCowboy 14. Feb 2018 02:58 PM

My Toshiba i5 laptop also runs around this temperature whereas my LG AIO desktop i5 runs between 34-37 when not under heavy load.

Anupam 14. Feb 2018 04:28 PM

He is talking about CPU temperature, or CPU usage? :D

torres-no-tan-magnifico 14. Feb 2018 05:00 PM

I think both! :)

danielson 14. Feb 2018 09:07 PM

Probably more CPU usage.
Often, when i look at reviews for various Linux distros, many show very low CPU usage.
Lately, MX-Linux was probably the lowest (3-6%) i've seen for my laptop (but it did take a few reboots to get it there). But it did fluctuate quite a bit before settling there.

On Windows, it hangs at about 24% (which i guess isn't that bad).

As of this writing, Solus was settling in at 4-11% (after latest updates).

Just find it odd that fluctuations on Linux can go on for some time before settling down.

p.s. have cleaned the cpu fan recently (but that's not my issue).

danielson 24. Feb 2018 02:56 PM

Here is a recently sample of what i mean by CPU fluctuation:
https://snag.gy/ritsEY.jpg

It was taken on LinuxMint Cinnamon 64bit
Others graphs were even more accentuated but, this instance is akin to other distros i've tested.

Just wonder why i can't get a distro that hovers at a constant 3-4 like many videos show...

MidnightCowboy 24. Feb 2018 03:21 PM

Modern CPU's are designed to run under load and even at a constant 100% the fail rate is only likely to be a year or so less than normal which is still under the period most users junk their systems anyway.

Regarding fluctuation, no matter what the OS, things (processes) will stop and start as they are designed to do such as updates, mail checks etc., so there will never be a steady graph.

IMO the most unproductive time you can spend with computing is worrying about CPU and memory use, plus for Windows, how many registry entries you might have. :)

Just switch the darn thing on, play with it, install stuff and enjoy it!

Anupam 24. Feb 2018 03:34 PM

Agreed with MC.

danielson 25. Feb 2018 02:29 AM

Goccha!

Tried to post a few times, don't know what the censored word was...


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