Extreme CPU usage coming from nowhere

Hello, I’ve had this issue for months and regardless of how hard I’ve searched I’ve yet to find anything matching my problem or a solution to it. For some reason, while the cpu usage is mostly normal 5-15 seconds after a cpu intensive task has concluded all cores will max out for anywhere from 10 seconds to permanently. When this happens the system will basically stop responding to everything until the cores stop being maxed. I am able to have this consistently happen if I build a package from the AUR, along with some other cases like compiling a program. This specifically only happens on situations like that, gaming does not cause this issue. I might just be stupid, and this is expected behavior after these have concluded but I have not found anything suggesting that.

KSysGuard, or htop do not show anything about this. All it shows is that the cores are maxed out, no task is shown taking up a lot of cpu usage or anything similar.

This issue has also persisted through new installations, although all of them were manjaro KDE.

My system information

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = "",
        LC_ALL = (unset),
        LC_ADDRESS = "en_US.UTF-8",
        LC_IDENTIFICATION = "en_US.UTF-8",
        LC_MEASUREMENT = "en_150.UTF-8",
        LC_MONETARY = "Default.UTF-8",
        LC_NAME = "en_US.UTF-8",
        LC_NUMERIC = "en_US.UTF-8",
        LC_PAPER = "en_US.UTF-8",
        LC_TELEPHONE = "en_US.UTF-8",
        LC_TIME = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to a fallback locale ("en_US.UTF-8").
System:
  Kernel: 5.19.7-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 12.2.0
    parameters: BOOT_IMAGE=/boot/vmlinuz-5.19-x86_64
    root=UUID=aa039be2-25b2-4fa5-b2ab-3a35577459fd rw quiet
    cryptdevice=UUID=9c8a2de9-128e-42bb-b5ca-ded41e3b1205:luks-9c8a2de9-128e-42bb-b5ca-ded41e3b1205
    root=/dev/mapper/luks-9c8a2de9-128e-42bb-b5ca-ded41e3b1205
    resume=/dev/mapper/luks-566e219b-b242-499f-8a70-f031f9d70ac8
    udev.log_priority=3
  Desktop: KDE Plasma v: 5.25.5 tk: Qt v: 5.15.5 wm: kwin_x11 vt: 1 dm: SDDM
    Distro: Manjaro Linux base: Arch Linux
Machine:
  Type: Desktop System: Dell product: Inspiron 3670 v: N/A
    serial: <superuser required> Chassis: type: 3 serial: <superuser required>
  Mobo: Dell model: 0H4VK7 v: A01 serial: <superuser required> UEFI: Dell
    v: 1.5.9 date: 10/09/2018
Battery:
  Message: No system battery data found. Is one present?
Memory:
  RAM: total: 15.46 GiB used: 7.42 GiB (48.0%)
  RAM Report: permissions: Unable to run dmidecode. Root privileges
    required.
CPU:
  Info: model: Intel Core i5-8400 bits: 64 type: MCP arch: Coffee Lake
    gen: core 8 level: v3 built: 2018 process: Intel 14nm family: 6
    model-id: 0x9E (158) stepping: 0xA (10) microcode: 0xF0
  Topology: cpus: 1x cores: 6 smt: <unsupported> cache: L1: 384 KiB
    desc: d-6x32 KiB; i-6x32 KiB L2: 1.5 MiB desc: 6x256 KiB L3: 9 MiB
    desc: 1x9 MiB
  Speed (MHz): avg: 3882 high: 3899 min/max: 800/4000 scaling:
    driver: intel_pstate governor: powersave cores: 1: 3882 2: 3882 3: 3899
    4: 3853 5: 3895 6: 3885 bogomips: 33613
  Flags: 3dnowprefetch abm acpi adx aes aperfmperf apic arat
    arch_capabilities arch_perfmon art avx avx2 bmi1 bmi2 bts clflush
    clflushopt cmov constant_tsc cpuid cpuid_fault cx16 cx8 de ds_cpl dtes64
    dtherm dts epb ept ept_ad erms est f16c flexpriority flush_l1d fma fpu
    fsgsbase fxsr ht hwp hwp_act_window hwp_epp hwp_notify ibpb ibrs ida
    intel_pt invpcid invpcid_single lahf_lm lm mca mce md_clear mmx monitor
    movbe mpx msr mtrr nonstop_tsc nopl nx pae pat pbe pcid pclmulqdq pdcm
    pdpe1gb pebs pge pln pni popcnt pse pse36 pti pts rdrand rdseed rdtscp
    rep_good sdbg sep smap smep ss ssbd sse sse2 sse4_1 sse4_2 ssse3 stibp
    syscall tm tm2 tpr_shadow tsc tsc_adjust tsc_deadline_timer vme vmx vnmi
    vpid x2apic xgetbv1 xsave xsavec xsaveopt xsaves xtopology xtpr
  Vulnerabilities:
  Type: itlb_multihit status: KVM: VMX disabled
  Type: l1tf mitigation: PTE Inversion; VMX: conditional cache flushes, SMT
    disabled
  Type: mds mitigation: Clear CPU buffers; SMT disabled
  Type: meltdown mitigation: PTI
  Type: mmio_stale_data mitigation: Clear CPU buffers; SMT disabled
  Type: retbleed mitigation: IBRS
  Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via
    prctl
  Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer
    sanitization
  Type: spectre_v2 mitigation: IBRS, IBPB: conditional, RSB filling,
    PBRSB-eIBRS: Not affected
  Type: srbds mitigation: Microcode
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: Intel CoffeeLake-S GT2 [UHD Graphics 630] vendor: Dell
    driver: i915 v: kernel arch: Gen-9.5 process: Intel 14nm built: 2016-20
    ports: active: none empty: DP-1,HDMI-A-1 bus-ID: 00:02.0
    chip-ID: 8086:3e92 class-ID: 0380
  Device-2: NVIDIA TU116 [GeForce GTX 1660 SUPER] vendor: Gigabyte
    driver: nvidia v: 515.65.01 alternate: nouveau,nvidia_drm non-free: 515.xx+
    status: current (as of 2022-08) arch: Turing code: TUxxx
    process: TSMC 12nm built: 2018-22 pcie: gen: 1 speed: 2.5 GT/s lanes: 16
    link-max: gen: 3 speed: 8 GT/s bus-ID: 01:00.0 chip-ID: 10de:21c4
    class-ID: 0300
  Display: x11 server: X.Org v: 21.1.4 compositor: kwin_x11 driver: X:
    loaded: nvidia gpu: i915,nvidia display-ID: :0 screens: 1
  Screen-1: 0 s-res: 1920x1080 s-dpi: 81 s-size: 602x343mm (23.70x13.50")
    s-diag: 693mm (27.28")
  Monitor-1: HDMI-0 res: 1920x1080 hz: 60 dpi: 82
    size: 598x336mm (23.54x13.23") diag: 686mm (27.01") modes: N/A
  OpenGL: renderer: NVIDIA GeForce GTX 1660 SUPER/PCIe/SSE2 v: 4.6.0 NVIDIA
    515.65.01 direct render: Yes
Audio:
  Device-1: Intel Cannon Lake PCH cAVS vendor: Dell driver: snd_hda_intel
    bus-ID: 1-6:2 v: kernel chip-ID: 0951:170f
    alternate: snd_soc_skl,snd_sof_pci_intel_cnl class-ID: 0300
    bus-ID: 00:1f.3 chip-ID: 8086:a348 class-ID: 0403
  Device-2: NVIDIA TU116 High Definition Audio vendor: Gigabyte
    driver: snd_hda_intel v: kernel pcie: gen: 3 speed: 8 GT/s lanes: 16
    bus-ID: 01:00.1 chip-ID: 10de:1aeb class-ID: 0403
  Device-3: Kingston HyperX SoloCast type: USB
    driver: hid-generic,snd-usb-audio,usbhid
  Sound Server-1: ALSA v: k5.19.7-1-MANJARO running: yes
  Sound Server-2: sndio v: N/A running: no
  Sound Server-3: JACK v: 1.9.21 running: no
  Sound Server-4: PulseAudio v: 16.1 running: yes
  Sound Server-5: PipeWire v: 0.3.57 running: yes
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
    vendor: Dell driver: r8169 v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 1
    port: 3000 bus-ID: 03:00.0 chip-ID: 10ec:8168 class-ID: 0200
  IF: enp3s0 state: down mac: <filter>
  Device-2: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter
    vendor: Dell Vostro 3470 driver: ath9k v: kernel pcie: gen: 1
    speed: 2.5 GT/s lanes: 1 bus-ID: 04:00.0 chip-ID: 168c:0036 class-ID: 0280
  IF: wlp4s0 state: up mac: <filter>
  IP v4: <filter> type: dynamic noprefixroute scope: global
    broadcast: <filter>
  IP v6: <filter> type: dynamic noprefixroute scope: global
  IP v6: <filter> type: noprefixroute scope: link
  WAN IP: <filter>
Bluetooth:
  Device-1: Qualcomm Atheros type: USB driver: btusb v: 0.8 bus-ID: 1-14:7
    chip-ID: 0cf3:e005 class-ID: e001
  Report: rfkill ID: hci0 rfk-id: 1 state: down bt-service: enabled,running
    rfk-block: hardware: no software: yes address: see --recommends
Logical:
  Message: No logical block device data found.
  Device-1: luks-9c8a2de9-128e-42bb-b5ca-ded41e3b1205 maj-min: 254:0
    type: LUKS dm: dm-0 size: 101.94 GiB
  Components:
  p-1: nvme0n1p2 maj-min: 259:2 size: 101.95 GiB
  Device-2: luks-566e219b-b242-499f-8a70-f031f9d70ac8 maj-min: 254:1
    type: LUKS dm: dm-1 size: 17 GiB
  Components:
  p-1: nvme0n1p3 maj-min: 259:3 size: 17 GiB
RAID:
  Message: No RAID data found.
Drives:
  Local Storage: total: 1.49 TiB used: 472.93 GiB (31.0%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Toshiba model: KBG30ZMS128G NVMe
    128GB size: 119.24 GiB block-size: physical: 512 B logical: 512 B
    speed: 15.8 Gb/s lanes: 2 type: SSD serial: <filter> rev: ADDA0103
    temp: 34.9 C scheme: GPT
  ID-2: /dev/sda maj-min: 8:0 vendor: Seagate model: ST1000DM010-2EP102
    size: 931.51 GiB block-size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s
    type: HDD rpm: 7200 serial: <filter> rev: CC45 scheme: GPT
  ID-3: /dev/sdc maj-min: 8:32 type: USB vendor: Intenso model: N/A
    size: 476.94 GiB block-size: physical: 4096 B logical: 512 B type: SSD
    serial: <filter> rev: 0214 scheme: GPT
  Message: No optical or floppy data found.
Partition:
  ID-1: / raw-size: 101.94 GiB size: 99.78 GiB (97.88%) used: 45.26 GiB
    (45.4%) fs: ext4 dev: /dev/dm-0 maj-min: 254:0
    mapped: luks-9c8a2de9-128e-42bb-b5ca-ded41e3b1205 label: N/A
    uuid: aa039be2-25b2-4fa5-b2ab-3a35577459fd
  ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%) used: 484 KiB
    (0.2%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1 label: NO_LABEL
    uuid: F97D-2847
  ID-3: /run/media/nik/5b460c42-da8c-408c-aabb-c0219c618b03
    raw-size: 459.63 GiB size: 451.35 GiB (98.20%) used: 153.41 GiB (34.0%)
    fs: ext4 dev: /dev/sdc2 maj-min: 8:34 label: N/A
    uuid: 5b460c42-da8c-408c-aabb-c0219c618b03
  ID-4: /run/media/nik/cb8218e7-0093-44f4-86a9-fc572311e145
    raw-size: 931.51 GiB size: 915.81 GiB (98.31%) used: 273.92 GiB (29.9%)
    fs: ext4 dev: /dev/sda1 maj-min: 8:1 label: N/A
    uuid: cb8218e7-0093-44f4-86a9-fc572311e145
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default)
  ID-1: swap-1 type: partition size: 17 GiB used: 347.5 MiB (2.0%)
    priority: -2 dev: /dev/dm-1 maj-min: 254:1
    mapped: luks-566e219b-b242-499f-8a70-f031f9d70ac8 label: N/A
    uuid: 963a9e86-34a3-4a11-89b9-3840dd8d6d1b
Unmounted:
  ID-1: /dev/sdc1 maj-min: 8:33 size: 300 MiB fs: vfat label: NO_LABEL
    uuid: 0281-B4E3
  ID-2: /dev/sdc3 maj-min: 8:35 size: 17.01 GiB fs: swap label: swap
    uuid: 906890ec-a2fe-4d48-b105-675cd28d0171
USB:
  Hub-1: 1-0:1 info: Hi-speed hub with single TT ports: 16 rev: 2.0
    speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
  Device-1: 1-6:2 info: Kingston HyperX SoloCast type: Audio,HID
    driver: hid-generic,snd-usb-audio,usbhid interfaces: 3 rev: 1.1
    speed: 12 Mb/s power: 100mA chip-ID: 0951:170f class-ID: 0300
  Device-2: 1-7:3 info: Logitech Gaming Mouse G300 type: Mouse,Keyboard
    driver: hid-generic,usbhid interfaces: 2 rev: 2.0 speed: 12 Mb/s
    power: 200mA chip-ID: 046d:c246 class-ID: 0300
  Device-3: 1-8:4 info: Realtek RTS5129 Card Reader Controller
    type: <vendor specific> driver: rtsx_usb,rtsx_usb_ms,rtsx_usb_sdmmc
    interfaces: 1 rev: 2.0 speed: 480 Mb/s power: 500mA chip-ID: 0bda:0129
    class-ID: ff00 serial: <filter>
  Device-4: 1-9:5 info: Winbond ADXOK0119 type: Keyboard,Mouse
    driver: hid-generic,usbhid interfaces: 2 rev: 1.1 speed: 12 Mb/s
    power: 400mA chip-ID: 0416:a0f8 class-ID: 0301 serial: <filter>
  Device-5: 1-14:7 info: Qualcomm Atheros type: Bluetooth driver: btusb
    interfaces: 2 rev: 1.1 speed: 12 Mb/s power: 100mA chip-ID: 0cf3:e005
    class-ID: e001
  Hub-2: 2-0:1 info: Super-speed hub ports: 6 rev: 3.1 speed: 10 Gb/s
    chip-ID: 1d6b:0003 class-ID: 0900
  Device-1: 2-1:3 info: JMicron / USA JMS578 SATA 6Gb/s type: Mass Storage
    driver: uas interfaces: 1 rev: 3.0 speed: 5 Gb/s power: 896mA
    chip-ID: 152d:0578 class-ID: 0806 serial: <filter>
  Hub-3: 3-0:1 info: Hi-speed hub with single TT ports: 2 rev: 2.0
    speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
  Hub-4: 4-0:1 info: Super-speed hub ports: 4 rev: 3.1 speed: 10 Gb/s
    chip-ID: 1d6b:0003 class-ID: 0900
Sensors:
  System Temperatures: cpu: 35.0 C pch: 51.0 C mobo: 30.0 C gpu: nvidia
    temp: 51 C
  Fan Speeds (RPM): fan-1: 1012 gpu: nvidia fan: 0%
Info:
  Processes: 294 Uptime: 22h 52m wakeups: 0 Init: systemd v: 251
  default: graphical tool: systemctl Compilers: gcc: 12.2.0 clang: 14.0.6
  Packages: 1373 pm: pacman pkgs: 1368 libs: 385 tools: pamac pm: flatpak
  pkgs: 5 Shell: Zsh v: 5.9 default: Bash v: 5.1.16 running-in: konsole
  inxi: 3.3.21

So I remembered that this behavior also happened when I used Ark, specifically in gui mode. So I decided to try and reinstall with a different environment. The problem is now gone and I have no idea why. However since this issue persisted through previous installations which were all KDE plasma and now it’s gone at least for me it appears that KDE was the problem.

Maybe you find something if you search for “baloo” (kde file indexing)