In powertop I noticed a high number of interrupts 'INT3432', which I think would be either the touchpad or sound card. I am concerned on the effect on the power consumption and battery life.
FYI I applied all the recommmended powertop settings.
In powertop I see:
Summary: 7466.3 wakeups/second, 13.6 GPU ops/seconds, 0.0 VFS ops/sec and 63.9% CPU use Power est. Usage Events/s Category Description 17.8 W 72.3 ms/s 5747.5 Interrupt [7] INT3432:00 3.86 W 424.6 ms/s 1201.2 Process /usr/lib/firefox/firefox 3.12 W 4.8 pkts/s Device Network interface: wlan1 (wl)
In dmesg I see:
[ 3.088251] input: DLL0665:01 06CB:76AD UNKNOWN as /devices/pci0000:00/INT3433:00/i2c-9/i2c-DLL0665:01/0018:06CB:76AD.0001/input/input13
And /proc/interrupts shows the very high number of interrupts for whatever-that-is:
CPU0 CPU1 CPU2 CPU3 0: 22 0 0 0 IR-IO-APIC-edge timer 1: 1198 884 4906 644 IR-IO-APIC-edge i8042 6: 0 0 0 0 IR-IO-APIC-fasteoi dw_dmac 7: 798517 364970 2524051 438847 IR-IO-APIC-fasteoi INT3432:00, INT3433:00 8: 0 0 0 1 IR-IO-APIC-edge rtc0 9: 579 205 1217 246 IR-IO-APIC-fasteoi acpi 12: 117 27 643 30 IR-IO-APIC-edge i8042 19: 64153 37 180 22 IR-IO-APIC 19-fasteoi wlan1 21: 10 4 42 5 IR-IO-APIC 21-fasteoi ehci_hcd:usb3 39: 9769 5817 48867 8822 IR-IO-APIC 39-fasteoi DLL0665:01 40: 0 0 0 0 DMAR_MSI-edge dmar0 41: 0 0 0 0 DMAR_MSI-edge dmar1 42: 0 0 0 0 IR-PCI-MSI-edge PCIe PME 43: 0 0 0 0 IR-PCI-MSI-edge PCIe PME 44: 26 20 114 18 IR-PCI-MSI-edge xhci_hcd 45: 16 2 8 4 IR-PCI-MSI-edge rtsx_pci 46: 9467 13498 8372 18819 IR-PCI-MSI-edge 0000:00:1f.2 47: 114295 73782 53254 23185 IR-PCI-MSI-edge i915 48: 282 2 3 18 IR-PCI-MSI-edge snd_hda_intel 49: 2 1 1 11 IR-PCI-MSI-edge mei_me 50: 1066 159 29 130 IR-PCI-MSI-edge snd_hda_intel NMI: 1 1 1 1 Non-maskable interrupts LOC: 140434 141971 144669 128459 Local timer interrupts SPU: 0 0 0 0 Spurious interrupts PMI: 1 1 1 1 Performance monitoring interrupts IWI: 328 278 320 262 IRQ work interrupts RTR: 2 0 0 0 APIC ICR read retries RES: 26683 23782 35907 22000 Rescheduling interrupts CAL: 13819 13262 9013 13611 Function call interrupts TLB: 19832 19727 17178 16316 TLB shootdowns TRM: 0 0 0 0 Thermal event interrupts THR: 0 0 0 0 Threshold APIC interrupts MCE: 0 0 0 0 Machine check exceptions MCP: 9 9 9 9 Machine check polls HYP: 0 0 0 0 Hypervisor callback interrupts ERR: 12 MIS: 0
So my questions are:
- how can I confirm what this interrupt is?
- is it expected to have so many of them?
- is there any way to improve on this, to improve the battery life?
Thank you.