On Mon, Oct 5, 2020 at 6:38 PM ToddAndMargo via users <users@xxxxxxxxxxxxxxxxxxxxxxx> wrote:On 2020-10-05 16:25, Roger Heflin wrote: > ok. > > You have some piece of hw that is losing its mind and constantly > interrupting the machine, cpu2 is the one processing this interrupt. > Last time I saw this is was a bad motherboard. > > cat /proc/interrupts ; sleep 10 ; cat /proc/interrupts > > And we might be able to tell what device is doing it. If it is a > non-critical device you might be able to reset it and get it to behave > for a while. > Not sure what I am to look for? Is the the curprit? 16: 0 203708282 0 0 IR-IO-APIC 16-fasteoi i2c_designware.0, idma64.0, i801_smbus, parport0 "parport0" is that my parallel port I use with my printer? It has gone bad once before.
On 2020-10-05 16:53, Roger Heflin wrote: > It could be any of the devices: i2c_designware.0, idma64.0, > i801_smbus, parport0 but if the parport has had issues before that > could be an issue this time. > > it is doing about 50k interrupts/second and depending on what the > interrupt handler is doing that would take out a cpu. And system > time for things like this tends to hurt performance in a significant > way. > > You might try doing a "rmmod parport ; insmod parport" and see if that > "resets" it. It may or may not reset it. > > you might also look in /sys like this: > find /sys -name "*parport*" -ls > > and see if there are any "controls" in there that might let you reset > it. It is possible that the reboot process itself is the only thing > that "resets" it. I have seen always powered hardware (usually > network with wake on lan) that needs a full power removal to reset, > clearly not this piece of hw since a reboot clears it. > I crashed my machine. After the magik one finger reset, my CPU 2 is back to 3.3%. I think I am going to replace the parallel port card "just because" _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx
