Re: High CPU usage / high number of interrupts

The results are sort of interesting. At first, UE_INTERRUPT_OK was at 3k+ for the USB mouse. I unplugged the mouse, and then the keyboard jumped from 0 to 1k+ for UE_INTERRUPT_OK.

I have since reattached the mouse, and now both the mouse and the keyboard have a rising interrupt count. I would guess they jump by 20, or 30 interrupts every 2-3 seconds, with the keyboard jumping with a higher frequency.

Paste

ugen0.1: <Intel XHCI root HUB> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps) pwr=SAVE (0mA)

{
UE_CONTROL_OK : 0
UE_ISOCHRONOUS_OK : 0
UE_BULK_OK : 0
UE_INTERRUPT_OK : 0
UE_CONTROL_FAIL : 0
UE_ISOCHRONOUS_FAIL : 0
UE_BULK_FAIL : 0
UE_INTERRUPT_FAIL : 0
}

ugen0.2: <Realtek USB 10/100/1000 LAN> at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (350mA)

{
UE_CONTROL_OK : 7969
UE_ISOCHRONOUS_OK : 0
UE_BULK_OK : 11224
UE_INTERRUPT_OK : 0
UE_CONTROL_FAIL : 0
UE_ISOCHRONOUS_FAIL : 0
UE_BULK_FAIL : 94
UE_INTERRUPT_FAIL : 0
}

ugen0.4: <Sonix Technology Co., Ltd. Integrated Camera> at usbus0, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (500mA)

{
UE_CONTROL_OK : 10
UE_ISOCHRONOUS_OK : 0
UE_BULK_OK : 0
UE_INTERRUPT_OK : 0
UE_CONTROL_FAIL : 0
UE_ISOCHRONOUS_FAIL : 0
UE_BULK_FAIL : 0
UE_INTERRUPT_FAIL : 0
}

ugen0.6: <vendor 0x0cf3 product 0xe500> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA)

{
UE_CONTROL_OK : 16
UE_ISOCHRONOUS_OK : 53214
UE_BULK_OK : 0
UE_INTERRUPT_OK : 9
UE_CONTROL_FAIL : 0
UE_ISOCHRONOUS_FAIL : 0
UE_BULK_FAIL : 0
UE_INTERRUPT_FAIL : 0
}

ugen0.5: <vendor 0x30fa USB OPTICAL MOUSE> at usbus0, cfg=0 md=HOST spd=LOW (1.5Mbps) pwr=ON (100mA)

{
UE_CONTROL_OK : 11
UE_ISOCHRONOUS_OK : 0
UE_BULK_OK : 0
UE_INTERRUPT_OK : 1707
UE_CONTROL_FAIL : 0
UE_ISOCHRONOUS_FAIL : 0
UE_BULK_FAIL : 0
UE_INTERRUPT_FAIL : 0
}

ugen0.3: <SINO WEALTH Gaming KB> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (500mA)

{
UE_CONTROL_OK : 21
UE_ISOCHRONOUS_OK : 0
UE_BULK_OK : 0
UE_INTERRUPT_OK : 1790
UE_CONTROL_FAIL : 0
UE_ISOCHRONOUS_FAIL : 0
UE_BULK_FAIL : 0
UE_INTERRUPT_FAIL : 0
}
Best,
0x1eef

------- Original Message -------
On Sunday, November 27th, 2022 at 12:31 AM, Paul Procacci <pprocacci@gmail.com> wrote:

> usbconfig dump_stats
>
> Can you provide the output of the above? Run that a couple of times if you don't mind and do your very best to provide any rates of increases for any of the fields. An estimation would be perfectly fine.
> Thanks,
> Paul
>
> On Sat, Nov 26, 2022 at 10:09 PM 0x1eef <0x1eef@protonmail.com> wrote:
>
>>> Can you determine if irq 128 is being shared by any devices?
>>
>> I couldn't determine that from dmesg.boot, but I think there could be some useful information in that file. I attached the file to this e-mail. Thank you!
>>
>> Best,
>> 0x1eef
>>
>> Sent with [Proton Mail](https://proton.me/) secure email.
>>
>> ------- Original Message -------
>> On Saturday, November 26th, 2022 at 8:49 PM, Paul Procacci <pprocacci@gmail.com> wrote:
>>
>>> Can you determine if irq 128 is being shared by any devices?
>>> Usually this information can be found in `dmesg' or '/var/run/dmesg.boot'.
>>> vmstat indeed shows a device but it sometimes doesn't show all the devices sharing that IRQ. It's possible you're being misled by vmstat.
>>> Just trying to get the complete picture here of devices. ;)
>>> Thanks,
>>> Paul Procacci
>>>
>>> On Sat, Nov 26, 2022 at 6:21 PM 0x1eef <0x1eef@protonmail.com> wrote:
>>>
>>>> Hi !
>>>>
>>>>> Out of curiosity, have you pulled a usb device one by one until the interrupts disappear?
>>>>
>>>> I have three USB devices connected: mouse, keyboard, and an ethernet adapter.
>>>> I tried to remove each one by one, and I did not see the interrupt rate change.
>>>> I have also tried a cold boot without any USB devices connected, and the interrupt rate was about the same too.
>>>>
>>>> I don't know if it could be related, but there's a trackpad connected to the laptop that does not work. Maybe it has no relation to the issue, but setting "hw.psm.synaptics_support" to "0" also did not help.
>>>>
>>>> When Chromium loses focus, CPU usage usually drops to 0% and does not go above 10% - for as long as I am not using Chromium. I am using the i915 / drm kernel modules.. I saw another report of high CPU usage related to using those two kernel modules, but I wasn't able to identify that as the problem in my case.
>>>>
>>>> Thanks for the help.
>>>>
>>>> Sent with [Proton Mail](https://proton.me/) secure email.
>>>>
>>>> ------- Original Message -------
>>>> On Saturday, November 26th, 2022 at 8:06 PM, Paul Procacci <pprocacci@gmail.com> wrote:
>>>>
>>>>> Hey,
>>>>>
>>>>> Not sure of the problem, but I don't see the correlation between Chrome and any usb driver.
>>>>> Out of curiosity, have you pulled a usb device one by one until the interrupts disappear?
>>>>> I'd be curious to know which device is slamming the system.
>>>>>
>>>>> Thanks,
>>>>> Paul
>>>>>
>>>>> On Sat, Nov 26, 2022 at 6:02 PM 0x1eef <0x1eef@protonmail.com> wrote:
>>>>>
>>>>>> Hi, everyone!
>>>>>>
>>>>>> When I use Chromium, I see a high rate of CPU usage across all four cores. The rate can be anywhere from 20% to 50%, even above that. I am not doing anything intensive, just browsing twitter, reddit, YouTube or GitHub. It has been like this since I installed FreeBSD, but since it's not a blocker I have been lazy about looking into it.
>>>>>>
>>>>>> I don't know why it happens. I can see that there are a high number of interrupts on 'xhci0', and that seems to carry over to each CPU core as well:
>>>>>>
>>>>>> # vmstat -i
>>>>>> interrupt total rate
>>>>>> irq1: atkbd0 50 0
>>>>>> irq9: acpi0 403 0
>>>>>> cpu0:timer 30716618 98
>>>>>> cpu1:timer 25457926 81
>>>>>> cpu2:timer 34344531 109
>>>>>> cpu3:timer 25542867 81
>>>>>> irq128: xhci0 328107434 1044
>>>>>> irq130: nvme0:admin 15 0
>>>>>> irq131: nvme0:io0 701041 2
>>>>>> irq132: nvme0:io1 692045 2
>>>>>> irq133: nvme0:io2 792760 3
>>>>>> irq134: nvme0:io3 693091 2
>>>>>> irq135: hdac0 1718425 5
>>>>>> irq136: vgapci0 6273295 20
>>>>>> Total 455040501 1448
>>>>>>
>>>>>> # dmesg | grep xhci0
>>>>>> xhci0: <Intel Ice Lake-LP USB 3.1 controller> mem 0x95110000-0x9511ffff at device 20.0 on pci0
>>>>>> xhci0: 32 bytes context size, 64-bit DMAusbus0 on xhci0
>>>>>>
>>>>>> It might also be helpful to know that I tried OpenBSD on the same computer but it was unusable for a similar reason: 95%+ interrupts on CPU. The impact that had made all tasks extremely slow. On FreeBSD it is not as bad, but I still think think it is not normal.
>>>>>>
>>>>>> Can anyone suggest what might be wrong, tips to debug, etc ? If more information is needed, please let me know. Thanks for your time.
>>>>>>
>>>>>> Best,0x1eef
>>>>>
>>>>> --
>>>>>
>>>>> __________________
>>>>>
>>>>> :(){ :|:& };:
>>>
>>> --
>>>
>>> __________________
>>>
>>> :(){ :|:& };:
>
> --
>
> __________________
>
> :(){ :|:& };: