I noticed while poking around with systemd-analyze, that my kernel boot time was 7.067s. I'm trying to see what I can do to minimize this a bit, just for the hell of it. I think my hardware set up is pretty standard? The biggest outlier would be that I have windows(nvme0n1) and debian (nvme1n1) installed each on their own m.2 nvme drive
inxi -Fxz
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debian:~$ inxi -Fxz
System: Kernel: 5.10.0-21-amd64 x86_64 bits: 64 compiler: gcc v: 10.2.1 Desktop: GNOME 3.38.6
Distro: Debian GNU/Linux 11 (bullseye)
Machine: Type: Desktop Mobo: Gigabyte model: B550I AORUS PRO AX serial: <filter> BIOS: American Megatrends LLC. v: F16e
date: 07/20/2022
CPU: Info: 6-Core model: AMD Ryzen 5 5600X bits: 64 type: MT MCP arch: Zen 3 rev: 0 L2 cache: 3 MiB
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm bogomips: 88637
Speed: 3092 MHz min/max: 2200/4650 MHz boost: enabled Core speeds (MHz): 1: 3092 2: 2873 3: 2869 4: 3593 5: 3592
6: 2866 7: 2872 8: 3591 9: 2871 10: 2871 11: 3659 12: 2872
Graphics: Device-1: NVIDIA GP104 [GeForce GTX 1070] vendor: Gigabyte driver: nvidia v: 470.161.03 bus ID: 07:00.0
Display: x11 server: X.Org 1.20.11 driver: loaded: nvidia unloaded: fbdev,modesetting,nouveau,vesa
resolution: 3440x1440~60Hz
OpenGL: renderer: NVIDIA GeForce GTX 1070/PCIe/SSE2 v: 4.6.0 NVIDIA 470.161.03 direct render: Yes
Audio: Device-1: NVIDIA GP104 High Definition Audio vendor: Gigabyte driver: snd_hda_intel v: kernel bus ID: 07:00.1
Device-2: Advanced Micro Devices [AMD] Starship/Matisse HD Audio vendor: Gigabyte driver: snd_hda_intel v: kernel
bus ID: 09:00.4
Sound Server: ALSA v: k5.10.0-21-amd64
Network: Device-1: Realtek RTL8125 2.5GbE vendor: Gigabyte driver: r8169 v: kernel port: f000 bus ID: 05:00.0
IF: eno1 state: down mac: <filter>
Device-2: Intel Wi-Fi 6 AX200 driver: iwlwifi v: kernel port: f000 bus ID: 06:00.0
IF: wlp6s0 state: up mac: <filter>
IF-ID-1: br-2d1508cdb618 state: down mac: <filter>
IF-ID-2: br-613cc1964d04 state: down mac: <filter>
IF-ID-3: br-cb48f4622c19 state: down mac: <filter>
IF-ID-4: docker0 state: down mac: <filter>
Bluetooth: Device-1: Intel AX200 Bluetooth type: USB driver: btusb v: 0.8 bus ID: 1-8:4
Report: ID: hci0 state: up running pscan iscan bt-v: 3.0 lmp-v: 5.2 address: <filter>
Drives: Local Storage: total: 1.16 TiB used: 156.03 GiB (13.1%)
ID-1: /dev/nvme0n1 vendor: Seagate model: XPG GAMMIX S50 Lite size: 953.87 GiB
ID-2: /dev/nvme1n1 vendor: Samsung model: SSD 980 PRO 250GB size: 232.89 GiB
Partition: ID-1: / size: 227.23 GiB used: 156.03 GiB (68.7%) fs: ext4 dev: /dev/nvme1n1p1
Swap: ID-1: swap-1 type: partition size: 976 MiB used: 0 KiB (0.0%) dev: /dev/nvme1n1p5
Sensors: System Temperatures: cpu: 35.5 C mobo: 16.8 C gpu: nvidia temp: 46 C
Fan Speeds (RPM): N/A gpu: nvidia fan: 0%
Info: Processes: 312 Uptime: 20m Memory: 15.6 GiB used: 3.38 GiB (21.7%) Init: systemd runlevel: 5 Compilers: gcc: 10.2.1
Packages: 3096 Shell: Bash v: 5.1.4 inxi: 3.3.01
Poking around through dmesg logs after a boot, there are two big sections that stick out to me, but I'm not exactly sure how to move forward with them. Any help would be appreciated!
This first section, where we seem to start doing ACPI things, before going to tsc/clocksource things, and then wait an entire other second before moving back to ACPI:
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[ 0.973370] pcieport 0000:00:01.1: PME: Signaling with IRQ 27
[ 0.973406] pcieport 0000:00:01.1: AER: enabled with IRQ 27
[ 0.973518] pcieport 0000:00:01.2: PME: Signaling with IRQ 28
[ 0.973566] pcieport 0000:00:01.2: AER: enabled with IRQ 28
[ 0.973681] pcieport 0000:00:03.1: PME: Signaling with IRQ 29
[ 0.973718] pcieport 0000:00:03.1: AER: enabled with IRQ 29
[ 0.973867] pcieport 0000:00:07.1: PME: Signaling with IRQ 31
[ 0.973902] pcieport 0000:00:07.1: AER: enabled with IRQ 31
[ 0.974008] pcieport 0000:00:08.1: PME: Signaling with IRQ 32
[ 0.974044] pcieport 0000:00:08.1: AER: enabled with IRQ 32
[ 0.974613] shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
[ 0.974641] Monitor-Mwait will be used to enter C-1 state
[ 0.974644] ACPI: \_SB_.PLTF.C000: Found 2 idle states
[ 0.974685] ACPI: \_SB_.PLTF.C002: Found 2 idle states
[ 0.974731] ACPI: \_SB_.PLTF.C004: Found 2 idle states
[ 0.974765] ACPI: \_SB_.PLTF.C006: Found 2 idle states
[ 0.974814] ACPI: \_SB_.PLTF.C008: Found 2 idle states
[ 0.974859] ACPI: \_SB_.PLTF.C00A: Found 2 idle states
[ 0.974904] ACPI: \_SB_.PLTF.C001: Found 2 idle states
[ 0.974948] ACPI: \_SB_.PLTF.C003: Found 2 idle states
[ 0.974996] ACPI: \_SB_.PLTF.C005: Found 2 idle states
[ 0.975043] ACPI: \_SB_.PLTF.C007: Found 2 idle states
[ 0.975087] ACPI: \_SB_.PLTF.C009: Found 2 idle states
[ 0.975134] ACPI: \_SB_.PLTF.C00B: Found 2 idle states
[ 1.977709] tsc: Refined TSC clocksource calibration: 3693.061 MHz
[ 1.977717] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x6a7777116fa, max_idle_ns: 881590883556 ns
[ 1.977751] clocksource: Switched to clocksource tsc
[ 3.002456] ACPI: Invalid passive threshold
[ 3.002562] thermal LNXTHERM:00: registered as thermal_zone0
[ 3.002563] ACPI: Thermal Zone [TZ10] (17 C)
[ 3.002595] ACPI: Invalid passive threshold
[ 3.002620] thermal LNXTHERM:01: registered as thermal_zone1
[ 3.002620] ACPI: Thermal Zone [UAD0] (17 C)
[ 3.002732] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 3.002987] Linux agpgart interface v0.103
[ 3.003338] AMD-Vi: AMD IOMMUv2 loaded and initialized
[ 3.003876] i8042: PNP: No PS/2 controller found.
[ 3.003908] mousedev: PS/2 mouse device common for all mice
[ 3.003931] rtc_cmos 00:02: RTC can wake from S4
[ 3.004145] rtc_cmos 00:02: registered as rtc0
[ 3.004204] rtc_cmos 00:02: setting system clock to 2023-01-24T20:42:52 UTC (1674592972)
[ 3.004211] rtc_cmos 00:02: alarms up to one month, y3k, 114 bytes nvram, hpet irqs
[ 3.004286] ledtrig-cpu: registered to indicate activity on CPUs
[ 3.004416] NET: Registered protocol family 10
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[ 3.105472] ACPI: Power Button [PWRF]
[ 3.106888] ACPI: bus type USB registered
[ 3.106896] usbcore: registered new interface driver usbfs
[ 3.106899] usbcore: registered new interface driver hub
[ 3.106907] usbcore: registered new device driver usb
[ 3.109884] libata version 3.00 loaded.
[ 3.115939] nvme nvme1: Shutdown timeout set to 10 seconds
[ 3.122130] nvme nvme1: 32/0/0 default/read/poll queues
[ 3.123975] nvme1n1: p1 p2 < p5 >
[ 5.911282] nvme nvme0: 15/0/0 default/read/poll queues
[ 6.111801] nvme0n1: p1 p2 p3
[ 6.127641] ahci 0000:02:00.1: version 3.0
[ 6.127772] ahci 0000:02:00.1: AHCI 0001.0301 32 slots 6 ports 6 Gbps 0x3f impl SATA mode
[ 6.127773] ahci 0000:02:00.1: flags: 64bit ncq sntf stag pm led clo only pmp pio slum part sxs deso sadm sds apst
[ 6.128075] scsi host0: ahci
[ 6.128147] scsi host1: ahci
[ 6.128203] scsi host2: ahci
[ 6.128270] scsi host3: ahci
[ 6.128338] scsi host4: ahci
[ 6.128404] scsi host5: ahci
[ 6.128432] ata1: SATA max UDMA/133 abar m131072@0xfc580000 port 0xfc580100 irq 90
[ 6.128434] ata2: SATA max UDMA/133 abar m131072@0xfc580000 port 0xfc580180 irq 90
[ 6.128435] ata3: SATA max UDMA/133 abar m131072@0xfc580000 port 0xfc580200 irq 90
[ 6.128436] ata4: SATA max UDMA/133 abar m131072@0xfc580000 port 0xfc580280 irq 90
[ 6.128438] ata5: SATA max UDMA/133 abar m131072@0xfc580000 port 0xfc580300 irq 90
[ 6.128439] ata6: SATA max UDMA/133 abar m131072@0xfc580000 port 0xfc580380 irq 90
[ 6.147023] r8169 0000:05:00.0 eth0: RTL8125B, 18:c0:4d:6a:1b:66, XID 641, IRQ 91
[ 6.147024] r8169 0000:05:00.0 eth0: jumbo features [frames: 9194 bytes, tx checksumming: ko]
[ 6.443638] ata3: SATA link down (SStatus 0 SControl 330)
[ 6.443870] ata4: SATA link down (SStatus 0 SControl 330)
[ 6.443892] ata1: SATA link down (SStatus 0 SControl 330)
[ 6.443912] ata6: SATA link down (SStatus 0 SControl 330)
[ 6.443999] ata2: SATA link down (SStatus 0 SControl 330)
[ 7.169481] ata5: failed to resume link (SControl 0)
[ 7.169493] ata5: SATA link down (SStatus 0 SControl 0)