Real Time Kernel, Responsiveness?

Hi all.

Just playing around and reading here in the forum and everywhere, I concluded that Real Time Kernel is faster and more responsive than default or LTS kernels.

So, I just installed the latest Kernel: 6.10.2-3-rt14-MANJARO just to try, and I noticed that apps launch a bit faster than the LTS kerenl I have.

So, I just want to discuss a few things and learn more:

  • I read here in different posts that real time kernels pose a security risk. What is the risk I have if I am just a normal home user, I don’t even have or use AUR.
  • A bit of distro hopping I tried PCLinuxOS (KDE Plasma) on a another older and less powerful machine (but has more RAM). I noticed how fast and responsive is pclos as compared to any other distro.

Is it OK for me to keep using the real time kernel or better uninstall it and revert to the LTS kernel?

  • I wonder how I can make my Manjaro as fast and as responsive as pclos?

Thanks for your inputs and brainstorming.

  ~  sudo inxi --verbosity=8 --filter --w                                             ✔ 
[sudo] password for oldtux: 
System:
  Kernel: 6.10.2-3-rt14-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 14.2.1
    clocksource: tsc avail: acpi_pm
    parameters: BOOT_IMAGE=/@/boot/vmlinuz-6.10-rt-x86_64
    root=UUID=6b653fb7-09dc-4411-9eb2-e9e3637c4464 rw rootflags=subvol=@
    quiet splash udev.log_priority=3
  Desktop: KDE Plasma v: 6.0.5 tk: Qt v: N/A wm: kwin_x11 dm: SDDM
    Distro: Manjaro base: Arch Linux
Machine:
  Type: Convertible System: HP product: HP Spectre x360 Convertible 13-ae0xx
    v: N/A serial: <filter> Chassis: type: 31 serial: N/A
  Mobo: HP model: 83B9 v: 56.50 serial: <filter> part-nu: 3DR36PA#UUF
    uuid: 37444335-3734-3932-3952-523937344435 UEFI: AMI v: F.36
    date: 03/19/2022
Battery:
  ID-1: BAT0 charge: 47.1 Wh (100.0%) condition: 47.1/47.1 Wh (100.0%)
    volts: 12.7 min: 11.6 model: HP Primary type: Li-ion serial: N/A
    status: full
  Device-1: hid-0018:04F3:2597.0002-battery model: ELAN2514:00 04F3:2597
    serial: N/A charge: N/A status: N/A
Memory:
  System RAM: total: 8 GiB available: 7.51 GiB used: 2.85 GiB (38.0%)
    igpu: 64 MiB
  Array-1: capacity: 8 GiB slots: 2 modules: 2 EC: None
    max-module-size: 4 GiB note: est.
  Device-1: Bottom - on board type: LPDDR3 detail: synchronous unbuffered
    (unregistered) size: 4 GiB speed: 2133 MT/s volts: curr: 1.2 min: 1.25
    max: 1.25 width (bits): data: 64 total: 64 manufacturer: Micron
    part-no: MT52L512M32D2PF-093 WT:B serial: N/A
  Device-2: Bottom - on board type: LPDDR3 detail: synchronous unbuffered
    (unregistered) size: 4 GiB speed: 2133 MT/s volts: curr: 1.2 min: 1.25
    max: 1.25 width (bits): data: 64 total: 64 manufacturer: Micron
    part-no: MT52L512M32D2PF-093 WT:B serial: N/A
PCI Slots:
  Slot: 0 type: PCIe status: in use info: J6B2 length: long volts: 3.3
    bus-ID: 00:01.0
CPU:
  Info: model: Intel Core i7-8550U socket: BGA1356 (U3E1) note: check bits: 64
    type: MT MCP arch: Coffee Lake gen: core 8 level: v3 note: check built: 2017
    process: Intel 14nm family: 6 model-id: 0x8E (142) stepping: 0xA (10)
    microcode: 0xF6
  Topology: cpus: 1x cores: 4 tpc: 2 threads: 8 smt: enabled cache:
    L1: 256 KiB desc: d-4x32 KiB; i-4x32 KiB L2: 1024 KiB desc: 4x256 KiB
    L3: 8 MiB desc: 1x8 MiB
  Speed (MHz): avg: 800 min/max: 400/4000 base/boost: 3700/8300 scaling:
    driver: intel_pstate governor: powersave volts: 1.1 V ext-clock: 100 MHz
    cores: 1: 800 2: 800 3: 800 4: 800 5: 800 6: 800 7: 800 8: 800
    bogomips: 31999
  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 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
    sgx 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: gather_data_sampling mitigation: Microcode
  Type: itlb_multihit status: KVM: VMX disabled
  Type: l1tf mitigation: PTE Inversion; VMX: conditional cache flushes, SMT
    vulnerable
  Type: mds mitigation: Clear CPU buffers; SMT vulnerable
  Type: meltdown mitigation: PTI
  Type: mmio_stale_data mitigation: Clear CPU buffers; SMT vulnerable
  Type: reg_file_data_sampling status: Not affected
  Type: retbleed mitigation: IBRS
  Type: spec_rstack_overflow status: Not affected
  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; STIBP: conditional;
    RSB filling; PBRSB-eIBRS: Not affected; BHI: Not affected
  Type: srbds mitigation: Microcode
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: Intel UHD Graphics 620 vendor: Hewlett-Packard driver: i915
    v: kernel arch: Gen-9.5 process: Intel 14nm built: 2016-20 ports:
    active: eDP-1 empty: DP-1, DP-2, HDMI-A-1, HDMI-A-2 bus-ID: 00:02.0
    chip-ID: 8086:5917 class-ID: 0300
  Device-2: Cheng Uei Precision Industry (Foxlink) HP Wide Vision FHD Camera
    driver: uvcvideo type: USB rev: 2.0 speed: 480 Mb/s lanes: 1 mode: 2.0
    bus-ID: 1-5:3 chip-ID: 05c8:0815 class-ID: 0e02 serial: <filter>
  Display: unspecified server: X.Org v: 21.1.13 with: Xwayland v: 24.1.2
    compositor: kwin_x11 driver: X: loaded: modesetting alternate: fbdev,vesa
    dri: iris gpu: i915 display-ID: :0 screens: 1
  Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.00x11.22")
    s-diag: 582mm (22.93") monitors: <missing: xrandr>
  Monitor-1: eDP-1 model: ChiMei InnoLux 0x1376 built: 2015 res: 1920x1080
    dpi: 166 gamma: 1.2 chroma: red: x: 0.639 y: 0.329 green: x: 0.298 y: 0.600
    blue: x: 0.149 y: 0.059 white: x: 0.314 y: 0.329
    size: 293x165mm (11.54x6.5") diag: 336mm (13.2") ratio: 16:9
    modes: 1920x1080
  EDID-Warnings: 1: parse_edid: unknown flag 2
  API: EGL v: 1.5 hw: drv: intel iris platforms: device: 0 drv: iris
    device: 1 drv: swrast gbm: drv: iris surfaceless: drv: iris x11: drv: iris
    inactive: wayland
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: intel mesa v: 24.1.6-arch1.1
    glx-v: 1.4 direct-render: yes renderer: Mesa Intel UHD Graphics 620 (KBL
    GT2) device-ID: 8086:5917 memory: 3.67 GiB unified: yes
  API: Vulkan v: 1.3.279 layers: N/A device: 0 type: integrated-gpu
    name: Intel UHD Graphics 620 (KBL GT2) driver: mesa intel v: 24.1.6-arch1.1
    device-ID: 8086:5917 surfaces: xcb,xlib
Audio:
  Device-1: Intel Sunrise Point-LP HD Audio vendor: Hewlett-Packard
    driver: snd_hda_intel v: kernel alternate: snd_soc_skl, snd_soc_avs,
    snd_sof_pci_intel_skl bus-ID: 00:1f.3 chip-ID: 8086:9d71 class-ID: 0403
  API: ALSA v: k6.10.2-3-rt14-MANJARO status: kernel-api with: aoss
    type: oss-emulator tools: alsactl,alsamixer,amixer
  Server-1: JACK v: 1.9.22 status: off tools: N/A
  Server-2: PipeWire v: 1.2.3 status: n/a (root, process) with:
    1: pipewire-pulse status: active 2: wireplumber status: active
    3: pipewire-alsa type: plugin tools: pactl,pw-cat,pw-cli,wpctl
Network:
  Device-1: Intel Wireless 8265 / 8275 driver: iwlwifi v: kernel pcie: gen: 1
    speed: 2.5 GT/s lanes: 1 bus-ID: 02:00.0 chip-ID: 8086:24fd class-ID: 0280
  IF: wlp2s0 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
  Info: services: NetworkManager, systemd-timesyncd, wpa_supplicant
  WAN IP: <filter>
Bluetooth:
  Device-1: Intel Bluetooth wireless interface driver: btusb v: 0.8 type: USB
    rev: 2.0 speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 1-7:4 chip-ID: 8087:0a2b
    class-ID: e001
  Report: rfkill ID: hci0 rfk-id: 0 state: up address: see --recommends
Logical:
  Message: No logical block device data found.
RAID:
  Message: No RAID data found.
Drives:
  Local Storage: total: 238.47 GiB used: 28.08 GiB (11.8%)
  SMART Message: Required tool smartctl not installed. Check --recommends
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Samsung
    model: MZVLW256HEHP-000H1 size: 238.47 GiB block-size: physical: 512 B
    logical: 512 B speed: 31.6 Gb/s lanes: 4 tech: SSD serial: <filter>
    fw-rev: CXB73H1Q temp: 35.9 C scheme: GPT
  Message: No optical or floppy data found.
Partition:
  ID-1: / raw-size: 238.17 GiB size: 238.17 GiB (100.00%)
    used: 28.08 GiB (11.8%) fs: btrfs block-size: 4096 B dev: /dev/nvme0n1p2
    maj-min: 259:2 label: N/A uuid: 6b653fb7-09dc-4411-9eb2-e9e3637c4464
  ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
    used: 584 KiB (0.2%) fs: vfat block-size: 512 B dev: /dev/nvme0n1p1
    maj-min: 259:1 label: N/A uuid: 7DB0-B14B
  ID-3: /home raw-size: 238.17 GiB size: 238.17 GiB (100.00%)
    used: 28.08 GiB (11.8%) fs: btrfs block-size: 4096 B dev: /dev/nvme0n1p2
    maj-min: 259:2 label: N/A uuid: 6b653fb7-09dc-4411-9eb2-e9e3637c4464
  ID-4: /var/cache raw-size: 238.17 GiB size: 238.17 GiB (100.00%)
    used: 28.08 GiB (11.8%) fs: btrfs block-size: 4096 B dev: /dev/nvme0n1p2
    maj-min: 259:2 label: N/A uuid: 6b653fb7-09dc-4411-9eb2-e9e3637c4464
  ID-5: /var/log raw-size: 238.17 GiB size: 238.17 GiB (100.00%)
    used: 28.08 GiB (11.8%) fs: btrfs block-size: 4096 B dev: /dev/nvme0n1p2
    maj-min: 259:2 label: N/A uuid: 6b653fb7-09dc-4411-9eb2-e9e3637c4464
Swap:
  Alert: No swap data was found.
Unmounted:
  Message: No unmounted partitions found.
USB:
  Hub-1: 1-0:1 info: hi-speed hub with single TT ports: 12 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
    class-ID: 0900
  Device-1: 1-3:7 info: HP HP Wireless Mouse 220 type: mouse
    driver: hid-generic,usbhid interfaces: 1 rev: 1.1 speed: 12 Mb/s (1.4 MiB/s)
    lanes: 1 mode: 1.1 power: 100mA chip-ID: 03f0:2141 class-ID: 0301
  Device-2: 1-5:3 info: Cheng Uei Precision Industry (Foxlink) HP Wide
    Vision FHD Camera type: video driver: uvcvideo interfaces: 4 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 power: 500mA
    chip-ID: 05c8:0815 class-ID: 0e02 serial: <filter>
  Device-3: 1-7:4 info: Intel Bluetooth wireless interface type: bluetooth
    driver: btusb interfaces: 2 rev: 2.0 speed: 12 Mb/s (1.4 MiB/s) lanes: 1
    mode: 1.1 power: 100mA chip-ID: 8087:0a2b class-ID: e001
  Hub-2: 2-0:1 info: super-speed hub ports: 6 rev: 3.0
    speed: 5 Gb/s (596.0 MiB/s) lanes: 1 mode: 3.2 gen-1x1 chip-ID: 1d6b:0003
    class-ID: 0900
  Hub-3: 3-0:1 info: hi-speed hub with single TT ports: 2 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
    class-ID: 0900
  Hub-4: 4-0:1 info: super-speed hub ports: 2 rev: 3.1
    speed: 10 Gb/s (1.16 GiB/s) lanes: 1 mode: 3.2 gen-2x1 chip-ID: 1d6b:0003
    class-ID: 0900
Sensors:
  System Temperatures: cpu: 52.0 C pch: 48.5 C mobo: N/A
  Fan Speeds (rpm): cpu: 0 mobo: 11008
Repos:
  Packages: pm: pacman pkgs: 1131 libs: 338 tools: pamac
  Active pacman repo servers in: /etc/pacman.d/mirrorlist
    1: https://mirror.init7.net/manjaro/stable/$repo/$arch
    2: http://ftp.uni-kl.de/pub/linux/manjaro/stable/$repo/$arch
    3: https://manjaro.mirror.garr.it/manjaro/stable/$repo/$arch
    4: https://mirror.futureweb.be/manjaro/stable/$repo/$arch
    5: https://ipng.mm.fcix.net/manjaro/stable/$repo/$arch
    6: http://ftp.tu-chemnitz.de/pub/linux/manjaro/stable/$repo/$arch
    7: https://ask4.mm.fcix.net/manjaro/stable/$repo/$arch
    8: https://mirror1.sox.rs/manjaro/stable/$repo/$arch
    9: https://mirrors2.manjaro.org/stable/$repo/$arch
    10: https://manjaro.mirror.wearetriple.com/stable/$repo/$arch
    11: https://mirrors.dotsrc.org/manjaro/stable/$repo/$arch
    12: https://manjaro.ynh.ovh/stable/$repo/$arch
    13: https://manjaro.mirrors.lavatech.top/stable/$repo/$arch
    14: https://mirrors.ft.uam.es/manjaro/stable/$repo/$arch
    15: http://ftp.belnet.be/mirrors/manjaro/repos/stable/$repo/$arch
    16: https://mirror.leitecastro.com/manjaro/stable/$repo/$arch
    17: https://mirror.netcologne.de/manjaro/stable/$repo/$arch
    18: https://ftp.halifax.rwth-aachen.de/manjaro/stable/$repo/$arch
    19: https://ftp.lysator.liu.se/pub/manjaro/stable/$repo/$arch
    20: http://mirror.terrahost.no/linux/manjaro/stable/$repo/$arch
    21: https://www.mirrorservice.org/sites/repo.manjaro.org/repos/stable/$repo/$arch
    22: https://mirror.easyname.at/manjaro/stable/$repo/$arch
    23: http://manjaro.mirrors.uk2.net/stable/$repo/$arch
    24: https://mirrors.xtom.de/manjaro/stable/$repo/$arch
    25: https://manjaro.kurdy.org/stable/$repo/$arch
    26: https://mirror.23m.com/manjaro/stable/$repo/$arch
    27: https://ftp.gwdg.de/pub/linux/manjaro/stable/$repo/$arch
    28: https://mirror.it4i.cz/manjaro/stable/$repo/$arch
    29: https://mirror.koddos.net/manjaro/stable/$repo/$arch
    30: https://mirror.bouwhuis.network/manjaro/stable/$repo/$arch
    31: https://ftp.linux.org.tr/manjaro/stable/$repo/$arch
    32: https://mirrors.xtom.ee/manjaro/stable/$repo/$arch
    33: https://ba.mirror.garr.it/mirrors/manjaro/stable/$repo/$arch
    34: https://mirrors.nic.cz/manjaro/stable/$repo/$arch
    35: https://mirror.yandex.ru/mirrors/manjaro/stable/$repo/$arch
    36: http://ftp.snt.utwente.nl/pub/linux/manjaro/stable/$repo/$arch
    37: https://ftp.psnc.pl/linux/manjaro/stable/$repo/$arch
    38: http://manjaro.grena.ge/stable/$repo/$arch
    39: https://mirror.alwyzon.net/manjaro/stable/$repo/$arch
    40: https://mirror.zetup.net/manjaro/stable/$repo/$arch
    41: https://quantum-mirror.hu/mirrors/pub/manjaro/stable/$repo/$arch
    42: https://ftp.nluug.nl/pub/os/Linux/distr/manjaro/stable/$repo/$arch
    43: http://ftp.rz.tu-bs.de/pub/mirror/manjaro.org/repos/stable/$repo/$arch
    44: https://mirror.alpix.eu/manjaro/stable/$repo/$arch
    45: https://mirror.telepoint.bg/manjaro/stable/$repo/$arch
    46: http://mirror.datacenter.by/pub/mirrors/manjaro/stable/$repo/$arch
    47: https://coresite.mm.fcix.net/manjaro/stable/$repo/$arch
    48: https://ct.mirror.garr.it/mirrors/manjaro/stable/$repo/$arch
    49: https://forksystems.mm.fcix.net/manjaro/stable/$repo/$arch
    50: https://mirrors.cicku.me/manjaro/stable/$repo/$arch
    51: https://uvermont.mm.fcix.net/manjaro/stable/$repo/$arch
    52: https://manjaro.ipacct.com/manjaro/stable/$repo/$arch
    53: https://ohioix.mm.fcix.net/manjaro/stable/$repo/$arch
    54: https://cofractal-ewr.mm.fcix.net/manjaro/stable/$repo/$arch
    55: https://mirror.math.princeton.edu/pub/manjaro/stable/$repo/$arch
    56: https://mnvoip.mm.fcix.net/manjaro/stable/$repo/$arch
    57: https://volico.mm.fcix.net/manjaro/stable/$repo/$arch
    58: https://mirror.dkm.cz/manjaro/stable/$repo/$arch
    59: https://mirrors.up.pt/pub/manjaro/stable/$repo/$arch
    60: https://southfront.mm.fcix.net/manjaro/stable/$repo/$arch
    61: https://nocix.mm.fcix.net/manjaro/stable/$repo/$arch
    62: https://mirrors.gigenet.com/manjaro/stable/$repo/$arch
    63: http://ftp.dei.uc.pt/pub/linux/manjaro/stable/$repo/$arch
    64: https://muug.ca/mirror/manjaro/stable/$repo/$arch
    65: https://mirrors.ocf.berkeley.edu/manjaro/stable/$repo/$arch
    66: https://mirrors.manjaro.org/repo/stable/$repo/$arch
    67: https://mirror.xenyth.net/manjaro/stable/$repo/$arch
    68: https://opencolo.mm.fcix.net/manjaro/stable/$repo/$arch
    69: https://nnenix.mm.fcix.net/manjaro/stable/$repo/$arch
    70: https://codingflyboy.mm.fcix.net/manjaro/stable/$repo/$arch
    71: https://ridgewireless.mm.fcix.net/manjaro/stable/$repo/$arch
    72: http://mirror.fcix.net/manjaro/stable/$repo/$arch
    73: https://ziply.mm.fcix.net/manjaro/stable/$repo/$arch
    74: https://repo.ialab.dsu.edu/manjaro/stable/$repo/$arch
    75: https://mirror.freedif.org/Manjaro/stable/$repo/$arch
    76: https://mirror.csclub.uwaterloo.ca/manjaro/stable/$repo/$arch
    77: https://irltoolkit.mm.fcix.net/manjaro/stable/$repo/$arch
    78: https://edgeuno-bog2.mm.fcix.net/manjaro/stable/$repo/$arch
    79: http://mirror.xeonbd.com/manjaro/stable/$repo/$arch
    80: https://ftpmirror1.infania.net/mirror/manjaro/stable/$repo/$arch
    81: https://mirror.truenetwork.ru/manjaro/stable/$repo/$arch
    82: https://manjarolinux-mirror.cloud.mu/stable/$repo/$arch
    83: https://gsl-syd.mm.fcix.net/manjaro/stable/$repo/$arch
    84: https://mirror.albony.xyz/manjaro/stable/$repo/$arch
    85: https://mirrors.sonic.net/manjaro/stable/$repo/$arch
    86: https://mirror.ufam.edu.br/manjaro/stable/$repo/$arch
    87: https://mirrors.ucr.ac.cr/manjaro/stable/$repo/$arch
    88: https://linorg.usp.br/manjaro/stable/$repo/$arch
    89: http://kartolo.sby.datautama.net.id/manjaro/stable/$repo/$arch
    90: https://mirror.funami.tech/manjaro/stable/$repo/$arch
    91: https://mirror.kamtv.ru/manjaro/stable/$repo/$arch
    92: http://ossmirror.mycloud.services/os/linux/manjaro/stable/$repo/$arch
    93: https://mirrors.xtom.jp/manjaro/stable/$repo/$arch
    94: https://mirror.kku.ac.th/manjaro/stable/$repo/$arch
    95: http://ftp.tsukuba.wide.ad.jp/Linux/manjaro/stable/$repo/$arch
    96: http://mirror.is.co.za/mirrors/manjaro.org/stable/$repo/$arch
    97: https://mirror.ufro.cl/manjaro/stable/$repo/$arch
    98: https://manjaro.c3sl.ufpr.br/stable/$repo/$arch
    99: https://manjaro.repo.cure.edu.uy/stable/$repo/$arch
    100: https://mirror.2degrees.nz/manjaro/stable/$repo/$arch
    101: https://mirrors.jlu.edu.cn/manjaro/stable/$repo/$arch
    102: https://mirror.phoepsilonix.love/manjaro/stable/$repo/$arch
    103: https://mirrors.sjtug.sjtu.edu.cn/manjaro/stable/$repo/$arch
    104: https://mirrors.tuna.tsinghua.edu.cn/manjaro/stable/$repo/$arch
Processes:
  CPU top: 5 of 321
  1: cpu: 200% command: ps pid: 13605 mem: 3.56 MiB (0.0%)
  2: cpu: 8.6% command: firefox pid: 4307 mem: 517.3 MiB (6.7%)
  3: cpu: 5.7% command: firefox pid: 12393 mem: 138.6 MiB (1.8%)
  4: cpu: 5.4% command: firefox pid: 12990 mem: 215.4 MiB (2.8%)
  5: cpu: 3.1% command: firefox pid: 4469 mem: 240.2 MiB (3.1%)
  Memory top: 5 of 321
  1: mem: 517.3 MiB (6.7%) command: firefox pid: 4307 cpu: 8.6%
  2: mem: 304.2 MiB (3.9%) command: plasmashell pid: 3621 cpu: 1.5%
  3: mem: 295.4 MiB (3.8%) command: firefox pid: 4444 cpu: 0.6%
  4: mem: 240.2 MiB (3.1%) command: firefox pid: 4469 cpu: 3.1%
  5: mem: 215.4 MiB (2.8%) command: firefox pid: 12990 cpu: 5.4%
Weather:
  Report: temperature: 28.49 C (83 F) conditions: clear sky wind: from NNE at
    3.8 m/s (14 km/h, 8 mph). Gusting to 3.8 m/s (14 km/h, 8 mph)
    cloud cover: 0% humidity: 52% pressure: 1013 mb (34 in)
  Locale: <filter> current time: Wed Sep  4 10:08:57 2024 (Africa/Cairo)
    observation time: Wed Sep 4 10:08:56 2024 sunrise: 06:34:02 sunset: 19:14:34
    Source: OpenWeatherMap.org
Info:
  Processes: 321 Power: uptime: 38m states: freeze,mem,disk suspend: deep
    avail: s2idle wakeups: 0 hibernate: platform avail: shutdown, reboot,
    suspend, test_resume image: 2.99 GiB services: org_kde_powerdevil,
    power-profiles-daemon, upowerd Init: systemd v: 256 default: graphical
    tool: systemctl
  Compilers: N/A Shell: Sudo (sudo) v: 1.9.15p5 default: Bash v: 5.2.32
    running-in: konsole inxi: 3.3.35
    ~         

I stand corrected - my memory is flawed on that point.
PCLinux OS is based on BSD - not comparable to Manjaro.

The realtime kernel is only suited for users - like musicians or video editors - which requires high precision timing.

I believe that in most circumstances the realtime kernel is slower than the default Manjaro kernel.

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It is generally recommended to not use the real-time kernels unless you are doing professional audio and/or video production.

It’s not as much a matter of security — or at least, in as far I know — but rather a matter of stability. The real-time patches are a hack into the kernel’s process scheduling.

The recommendation is always to use an LTS kernel, unless you require support for bleeding-edge hardware not yet present in the LTS kernel.

I have used PCLinuxOS for several years in the past. Trust me when I say that it does not perform any better than Manjaro. On the contrary, most of the software in Manjaro comes straight from Arch, and was specifically compiled for optimum performance.

If PCLOS performs better on that other machine, then it’s most likely due to the extra RAM, and/or the fact that the other machine uses dual-channel RAM access, which does indeed make a difference.

8 GiB of RAM is sufficient for running Manjaro, but 16 or 32 GiB is a whole lot better. There will be less swapping — if any at all — and the system can load more data in its cache memory.


Um, I don’t know what gives you that idea, but it most certainly is not BSD — hint: it’s in the name. :stuck_out_tongue:

PCLOS is a (non-curated) rolling-release GNU/Linux distribution that still uses sysvinit, a no longer maintained gtk2-based gdm — sddm is in the repos but is not installed by default — and unless things have recently changed, they also don’t support Wayland yet.

As far as GNU/Linux distributions go, PCLinuxOS is about as conservative as Slackware. :wink:

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Hmm - :thinking: - I admit it is more than 10y ago - a lot of things has happened since - it must be my memory.

Thank you for correcting my mistake.

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Your mind possibly wandered to PC-BSD and took a few wrong turns along the way.

Momentary lapses like this can happen to anyone. :smile:

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BAM - you nailed it - PC BSD it was.

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I won’t risk the stability. Will uninstall the RT kernel.

Yes, it is actually the extra RAM I guess. This machine is only 8GB the other is 20GB RAM (original 4GB +16GB)

Uninstalling the RT kernel NOW.

UPDATE:
Done! Uninstalled the RT Kernel.

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Yes, I am sure. I tried both on another old machine.
My final say, Manjaro wins, wins them all, and I mean ALL.

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RT kernel is not needed for most use-cases

Do I need a realtime kernel to use realtime scheduling? | JACK Audio Connection Kit

Do I need a realtime kernel to use realtime scheduling?

No. Realtime scheduling is available on all Linux systems no matter what kernel they use, and current versions of JACK use it by default. A kernel built with the realtime patches (an “RT kernel”) is needed only if:

  • You want to run JACK with very low latency settings that require realtime performance that can only be achieved with an RT kernel
  • Your hardware configuration triggers poor latency behaviour which might be improved with an RT kernel

Most users do not need an RT kernel in order to use JACK, and most will be happy using settings that are effective without an RT kernel.

Realtime scheduling is provided by package realtime-privileges and realtime user group

There is a security risk to consider when optimising a system for realtime scheduling

Quote edited after comment in post #11 from @Aragorn

SysVinit 3.10 Released - phoronix.com

While most Linux distributions are running on systemd as the init/service manager, SysVinit is continuing to be maintained

But sysvinitAUR has not been updated to latest version

SysVinit - ArchWiki
Warning: Arch Linux only has official support for systemd. [1] When using SysVinit, please mention so in support requests.

itsfoss.com 14 Systemd-Free Linux Distributions

To compare sysvinit and systemd performance with RT kernels I would suggest check out AV Linux MX Edition with Liquorix Kernel

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I’ll just add my 2p worth … I tried a RT kernel a while back, and although stuff seemed to open faster, VirtualBox was definitely NOT stable. I didn’t test it long enough to find other instabilities or issues.

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I wasn’t talking of sysvinit no longer being maintained, but about the gtk2-based gdm no longer being maintained.

PCLinuxOS still defaults to this gdm version for its Plasma edition because its PCLinuxOS Control Center (PCC) — which is based on the old Mandrake/Mandriva code and uses gtk2 — cannot be used for configuring sddm.

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