Comment # 27
on bug 112070
from Doobz
I've been looking at the interrupts, and pretty sure something is amiss. nvkm
does tick away quite rapidly 50+/sec, but it's by no means the worst.
cat /proc/interrupts
CPU0 CPU1
0: 884041 0 IO-APIC 2-edge timer
1: 943 0 IO-APIC 1-edge i8042
8: 0 1 IO-APIC 8-edge rtc0
9: 0 71944 IO-APIC 9-fasteoi acpi
12: 0 407479 IO-APIC 12-edge i8042
14: 15003 0 IO-APIC 14-edge ata_piix
15: 0 0 IO-APIC 15-edge ata_piix
16: 4422 0 IO-APIC 16-fasteoi yenta, uhci_hcd:usb5
17: 0 0 IO-APIC 17-fasteoi mmc0, mmc1
18: 0 184 IO-APIC 18-fasteoi uhci_hcd:usb4
19: 0 0 IO-APIC 19-fasteoi uhci_hcd:usb3, i801_smbus
20: 0 2 IO-APIC 20-fasteoi firewire_ohci
23: 0 3 IO-APIC 23-fasteoi uhci_hcd:usb1, ehci_hcd:usb2
29: 89581 51828 PCI-MSI 524288-edge nvkm
30: 0 518 PCI-MSI 442368-edge snd_hda_intel:card0
31: 54496 31631 PCI-MSI 2621440-edge iwl3945
32: 0 3 PCI-MSI 2097152-edge enp4s0
NMI: 7 8 Non-maskable interrupts
LOC: 117697 732513 Local timer interrupts
SPU: 0 0 Spurious interrupts
PMI: 7 8 Performance monitoring interrupts
IWI: 157032 144987 IRQ work interrupts
RTR: 0 0 APIC ICR read retries
RES: 99916 105307 Rescheduling interrupts
CAL: 43819 44884 Function call interrupts
TLB: 93370 93058 TLB shootdowns
TRM: 0 0 Thermal event interrupts
THR: 0 0 Threshold APIC interrupts
DFR: 0 0 Deferred Error APIC interrupts
MCE: 0 0 Machine check exceptions
MCP: 9 9 Machine check polls
This was after 45mins.
I was chasing interrupt issues on windows on this laptop. Never got it sussed.
It was fine in safe mode, but not booted normally.
Looking at the desktop(hp gf7100), it has no massive number on line 0 timer,
and no acpi ones either. Nvkm is ticking at similar rate to laptop, but there
is one line going up faster. Ill leave it on for a similar time and post it
here for comparison.
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