Hi all!
I have some problems with cpu usage in manjaro…
I noticed a while back that in KSysGuard one of cpu cores is showed to be always at 0% usage, while if I check htop the same core is showed to be at 100% usage, even if there’s no process that is really utilizing all that power.
Before landing on manjaro I in fact tried a number of debian/ubuntu based distros and in all of them one CPU core was always at 100% usage, making the system laggy and unusable, but manjaro works very good on my laptop so I thought that there simply was a bug somewhere that affected CPU monitoring.
This morning though I got curious and looked into it: I found this post regarding Ubuntu and the same issue and the first advice is to check for strange value in interrupts with
grep . -r /sys/firmware/acpi/interrupts/
So I did and in fact there are very strange values on some parameters, take a look:
/sys/firmware/acpi/interrupts/gpe26: 2575560 EN STS enabled unmasked
/sys/firmware/acpi/interrupts/sci: 2575593
/sys/firmware/acpi/interrupts/gpe_all: 2575673
I just extrapolated this three values cause all the others are 0, but I can post the whole output if it helps.
The post on Ubuntu that I linked before offers a solution, but it’s a very old post and a different distro, so should I follow that instructions?
Is there something else I should do or check?
Although my pc is veru usable I noticed very high battery draining even with TLP enabled and configured and I think this is whats causing the problem… any ideas?
Here’s my inxi -Fazy if you need it
System:
Kernel: 5.4.74-1-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.0
parameters: BOOT_IMAGE=/boot/vmlinuz-5.4-x86_64
root=UUID=5f7a7ef9-ca3d-413a-8734-f763cb82c6ef rw pci=noaer quiet apparmor=1
security=apparmor resume=UUID=bc81d4a7-d397-440e-9225-c2eae38cb1df
udev.log_priority=3
Desktop: KDE Plasma 5.20.2 tk: Qt 5.15.1 wm: kwin_x11 dm: SDDM
Distro: Manjaro Linux
Machine:
Type: Laptop System: ASUSTeK product: X541UAK v: 1.0 serial: <filter>
Mobo: ASUSTeK model: X541UAK v: 1.0 serial: <filter>
UEFI: American Megatrends v: X541UAK.311 date: 03/14/2018
Battery:
ID-1: BAT0 charge: 26.0 Wh condition: 27.9/34.6 Wh (81%) volts: 10.8/10.8
model: ASUSTeK ASUS Battery type: Li-ion serial: N/A status: Charging
cycles: 392
CPU:
Info: Dual Core model: Intel Core i3-6006U bits: 64 type: MT MCP
arch: Skylake family: 6 model-id: 4E (78) stepping: 3 microcode: D6
L2 cache: 3072 KiB
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
bogomips: 16006
Speed: 2000 MHz min/max: 400/2000 MHz Core speeds (MHz): 1: 2000 2: 2000
3: 2000 4: 2000
Vulnerabilities: Type: itlb_multihit status: KVM: Split huge pages
Type: l1tf
mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable
Type: mds mitigation: Clear CPU buffers; SMT vulnerable
Type: meltdown mitigation: PTI
Type: spec_store_bypass
mitigation: Speculative Store Bypass disabled via prctl and seccomp
Type: spectre_v1
mitigation: usercopy/swapgs barriers and __user pointer sanitization
Type: spectre_v2 mitigation: Full generic retpoline, IBPB: conditional,
IBRS_FW, STIBP: conditional, RSB filling
Type: srbds status: Vulnerable: No microcode
Type: tsx_async_abort status: Not affected
Graphics:
Device-1: Intel Skylake GT2 [HD Graphics 520] vendor: ASUSTeK driver: i915
v: kernel bus ID: 00:02.0 chip ID: 8086:1916
Device-2: IMC Networks USB2.0 VGA UVC WebCam type: USB driver: uvcvideo
bus ID: 1-6:3 chip ID: 13d3:5a01 serial: <filter>
Display: x11 server: X.Org 1.20.9 compositor: kwin_x11 driver: intel
display ID: :0 screens: 1
Screen-1: 0 s-res: 1366x768 s-dpi: 96 s-size: 361x203mm (14.2x8.0")
s-diag: 414mm (16.3")
Monitor-1: eDP1 res: 1366x768 hz: 60 dpi: 102 size: 340x190mm (13.4x7.5")
diag: 389mm (15.3")
OpenGL: renderer: Mesa Intel HD Graphics 520 (SKL GT2) v: 4.6 Mesa 20.2.1
direct render: Yes
Audio:
Device-1: Intel Sunrise Point-LP HD Audio vendor: ASUSTeK
driver: snd_hda_intel v: kernel alternate: snd_soc_skl bus ID: 00:1f.3
chip ID: 8086:9d70
Sound Server: ALSA v: k5.4.74-1-MANJARO
Network:
Device-1: Realtek RTL810xE PCI Express Fast Ethernet vendor: ASUSTeK
driver: r8169 v: kernel port: e000 bus ID: 02:00.2 chip ID: 10ec:8136
IF: enp2s0f2 state: down mac: <filter>
Device-2: Realtek RTL8723BE PCIe Wireless Network Adapter vendor: Lite-On
driver: rtl8723be v: kernel port: d000 bus ID: 03:00.0 chip ID: 10ec:b723
IF: wlp3s0 state: up mac: <filter>
Drives:
Local Storage: total: 577.55 GiB used: 166.27 GiB (28.8%)
SMART Message: Unable to run smartctl. Root privileges required.
ID-1: /dev/sda vendor: Crucial model: CT500MX500SSD1 size: 465.76 GiB
block size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s serial: <filter>
rev: 023 scheme: GPT
ID-2: /dev/sdb vendor: Crucial model: CT120BX500SSD1 size: 111.79 GiB
block size: physical: 512 B logical: 512 B speed: 6.0 Gb/s serial: <filter>
rev: R013 scheme: GPT
Partition:
ID-1: / raw size: 161.13 GiB size: 157.60 GiB (97.81%)
used: 59.75 GiB (37.9%) fs: ext4 dev: /dev/sda5
Swap:
Kernel: swappiness: 60 (default) cache pressure: 100 (default)
ID-1: swap-1 type: partition size: 3.91 GiB used: 0 KiB (0.0%) priority: -2
dev: /dev/sda7
Sensors:
System Temperatures: cpu: 45.0 C mobo: N/A
Fan Speeds (RPM): cpu: 2300
Info:
Processes: 181 Uptime: 36m Memory: 7.66 GiB used: 1.46 GiB (19.1%)
Init: systemd v: 246 Compilers: gcc: 10.2.0 Packages: pacman: 1470 lib: 469
flatpak: 0 Shell: Bash v: 5.0.18 running in: konsole inxi: 3.1.08