Hi,
> Could you do the same test without nolapic please?
Here we go.
root@test:~# cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz root=/dev/sda1 rootwait ro quiet noapic=1
root@test:~# uname -r
4.18.17
root@test:~# lsmod | grep i915
i915 1544192 2
drm_kms_helper 159744 1 i915
drm 376832 4 drm_kms_helper,i915
intel_gtt 24576 1 i915
root@test:~# cat /proc/interrupts ; sleep 10; cat /proc/interrupts
CPU0 CPU1
0: 2 0 XT-PIC timer
1: 5 0 XT-PIC i8042
2: 0 0 XT-PIC cascade
4: 1 0 XT-PIC ttyS0
8: 1 0 XT-PIC rtc0
9: 4 0 XT-PIC acpi
10: 0 0 XT-PIC i801_smbus
11: 35 0 XT-PIC ehci_hcd:usb1
12: 7 0 XT-PIC i8042
40: 0 0 PCI-MSI 458752-edge PCIe PME, pciehp
41: 0 5132 PCI-MSI 512000-edge ahci[0000:00:1f.2]
42: 0 124 PCI-MSI 327680-edge xhci_hcd
43: 0 237 PCI-MSI 409600-edge eth0
44: 0 343 PCI-MSI 442368-edge snd_hda_intel:card0
45: 0 208 PCI-MSI 32768-edge i915
NMI: 0 0 Non-maskable interrupts
LOC: 1752 2224 Local timer interrupts
SPU: 0 0 Spurious interrupts
PMI: 0 0 Performance monitoring interrupts
IWI: 0 0 IRQ work interrupts
RTR: 0 0 APIC ICR read retries
RES: 737 575 Rescheduling interrupts
CAL: 1277 83 Function call interrupts
TLB: 3 4 TLB shootdowns
TRM: 0 0 Thermal event interrupts
THR: 0 0 Threshold APIC interrupts
MCE: 0 0 Machine check exceptions
MCP: 1 2 Machine check polls
ERR: 46
MIS: 0
PIN: 0 0 Posted-interrupt notification event
NPI: 0 0 Nested posted-interrupt event
PIW: 0 0 Posted-interrupt wakeup event
CPU0 CPU1
0: 2 0 XT-PIC timer
1: 5 0 XT-PIC i8042
2: 0 0 XT-PIC cascade
4: 1 0 XT-PIC ttyS0
8: 1 0 XT-PIC rtc0
9: 4 0 XT-PIC acpi
10: 0 0 XT-PIC i801_smbus
11: 35 0 XT-PIC ehci_hcd:usb1
12: 7 0 XT-PIC i8042
40: 0 0 PCI-MSI 458752-edge PCIe PME, pciehp
41: 0 5154 PCI-MSI 512000-edge ahci[0000:00:1f.2]
42: 0 124 PCI-MSI 327680-edge xhci_hcd
43: 0 251 PCI-MSI 409600-edge eth0
44: 0 343 PCI-MSI 442368-edge snd_hda_intel:card0
45: 0 208 PCI-MSI 32768-edge i915
NMI: 0 0 Non-maskable interrupts
LOC: 1945 2381 Local timer interrupts
SPU: 0 0 Spurious interrupts
PMI: 0 0 Performance monitoring interrupts
IWI: 0 0 IRQ work interrupts
RTR: 0 0 APIC ICR read retries
RES: 748 579 Rescheduling interrupts
CAL: 1279 83 Function call interrupts
TLB: 3 4 TLB shootdowns
TRM: 0 0 Thermal event interrupts
THR: 0 0 Threshold APIC interrupts
MCE: 0 0 Machine check exceptions
MCP: 1 2 Machine check polls
ERR: 46
MIS: 0
PIN: 0 0 Posted-interrupt notification event
NPI: 0 0 Nested posted-interrupt event
PIW: 0 0 Posted-interrupt wakeup event
root@test:~# while sleep 1; do grep ERR: /proc/interrupts ; done
ERR: 46
ERR: 46
ERR: 46
ERR: 46
ERR: 46
ERR: 46
^C
