Date: Tue, 1 May 2018 20:53:32 -0700 From: Eitan Adler <lists@eitanadler.com> To: usb@freebsd.org Subject: IRQ storm on xhci0 Message-ID: <CAF6rxgk4u%2B2SrrOO18ceAJOWp1wMdGxAHfGVE40Y0t-=bzJFnQ@mail.gmail.com>
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Hi all, I am noticing consistently high IRQ rates on xhci0 example from vmstat -i right now: irq259: xhci0 2222153 1876 and this is not the highest I've seen. My understanding is that a rate of 1876/s is insane for USB devices. Any suggestions of what I can do to debug? Things I've tried: - disabling MSI interrupts - disabling MSI-X interrupts - powering off all usb devices using usbconfig - unplugging all USB devices One thing of note: My mobo has a broken USB connector resulting in one of the two front USB-3 ports not working. I'm guessing this is related but I'd like some confirmation and/or a way to bypass the issue in software. -- Eitan Adler
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