On Thu, 2006-11-09 at 17:17 -0500, Lyvim Xaphir wrote: > On Thu, 2006-11-09 at 21:30 +0000, Anne Wilson wrote: > > I have 99-100% cpu usage, and top shows that the culprit is khubd. I can't > > kill it, even as root. I'm shutting down for the night now anyway so it's no > > big deal, but if it happens again I'd rather not be forced to reboot. > > > > What is khubd anyway? > > > Khubd is a kernel thread which is part of the linux USB core. It is > supposed to configure USB devices when they are plugged into a usb jack > and it also monitors the system's USB hub.] For truly gory details: http://www.linuxjournal.com/node/8093/print > > > > Any hints for killing it when it runs away? > > > > Anne > > If it's taking 100% there's something not right. Start by making sure > there are no USB devices plugged into the system. This can be caused by a flaky connection or a low-power condition on the bus...the kernel gets flooded by plug/unplug event IRQs and khubd has to try to get rid of them all. As Lyvim says, try unplugging ALL of the USB stuff (including any hubs), wait a bit and see if it calms down. If not, reboot and connect things one-at-a-time to see what triggers it. ---------------------------------------------------------------------- - Rick Stevens, Senior Systems Engineer rstevens@xxxxxxxxxxxxxxx - - VitalStream, Inc. http://www.vitalstream.com - - - - Polygon: A dead parrot (With apologies to John Cleese) - ----------------------------------------------------------------------
