Interrupt storm

[Dan Cojocar]

On Apr 5, 2005 9:23 PM, John Baldwin <jhb at freebsd.org> wrote:
> On Tuesday 05 April 2005 12:44 pm, Dan Cojocar wrote:
> > On Apr 5, 2005 5:30 PM, John Baldwin <jhb at freebsd.org> wrote:
> > > On Tuesday 29 March 2005 01:35 pm, Jung-uk Kim wrote:
> > > > On Tuesday 29 March 2005 01:22 pm, Dan Cojocar wrote:
> > > > > Hello all,
> > > > >
> > > > > I noticed the following interrupt storm in my dmesg:
> > > > >
> > > > > Interrupt storm detected on "irq11: rl1"; throttling interrupt
> > > > > source Interrupt storm detected on "irq5: rl0"; throttling
> > > > > interrupt source
> > > > >
> > > > > Here is my vmstat -i:
> > > > > interrupt                          total       rate
> > > > > irq0: clk                         128600        199
> > > > > irq1: atkbd0                        2499          3
> > > > > irq4: sio0                             2          0
> > > > > irq5: rl0                         128901        200
> > > > > irq8: rtc                          82294        127
> > > > > irq11: rl1                        128902        200
> > > > > irq12: psm0                        16152         25
> > > > > irq14: ata0                        12600         19
> > > > > irq15: ata1                           71          0
> > > > > Total                             500021        776
> > > > >
> > > > > and here is my dmesg:
> > > > > http://cs.ubbcluj.ro/~dan/dmesg.txt
> > > > >
> > > > > I have options DEVICE_POLLING and options HZ=200, i have tested
> > > > > with greater HZ values like 1000, and without DEVICE_POLLING  but i
> > > > > have the same storm.
> > > >
> > > > Try this:
> > > >
> > > > http://docs.freebsd.org/cgi/mid.cgi?200503161154.04555.jkim
> > >
> > > He's not using an APIC so that won't make any difference.
> >
> >     If I use APIC, I will get "watchdog timeout" as i posted in an old
> email:
> > >rl0: watchdog timeout
> > >rl1: watchdog timeout
> > >rl0: watchdog timeout
> > >rl1: watchdog timeout
> > >rl1: watchdog timeout
> > >rl1: watchdog timeout
> > >rl1: watchdog timeout
> >
> >    Thanks,
> >              Dan
> 
> That's indicative of other interrupt routing problems.  This is with APIC +
> ACPI, yes? If you disable ACPI, does APIC work or is it not found?  Also, if
> you disable ACPI, does non-APIC work ok?
> 
   Yes i get "watchdog timeout" if i use ACPI+APIC.
   Here is my dmesg for current+acpi+apic.
     http://cs.ubbcluj.ro/~dan/current+acpi+apic.txt
   If i disable acpi, the system is not able to boot to the login
prompt. I did a break
into debugger after waiting for 15 minutes and i noticed that the
interrupts for rl0 are increasing very quickly, so i think that is why
the system is so slow.
  Here is a dmesg for current without ACPI and with APIC, but only in
single mode
without if_rl module and many other modules.
    http://cs.ubbcluj.ro/~dan/current+noacpi+apic+singlemode.txt
  And if I disable ACPI i don't see the interrupts storms but i don't
have ACPI :(
    http://cs.ubbcluj.ro/~dan/current+noacpi+noapic.txt
  And here is current with ACPI and without APIC:
    http://cs.ubbcluj.ro/~dan/current+acpi+noapic.txt
   Thanks,
            Dan