[asterisk-users] zaptel huge irq problem

[Stephen Bosch]

Hi, Francois:

François Delawarde wrote:
> Hello,
> 
> I had noticed strange crackling sound on my phone calls going through my
> zaptel device (TDM400P), so i decided to check on possible timer issue,
> and found lots of issues on forums concerning the sensibility of zaptel
> with IRQs, and tried about everything: moving PCI slots, noapic and
> acpi=off boot options, play with different kernel options:
> iosched/preemption/timer/..., play with BIOS PCI options, change
> priorities, PCI latencies, IRQ balance, smp_afinity, ................
> but impossible to come up with anything correcting that problem.

What kind of motherboard do you have?

> - The card DOES NOT seem to share interrupts (checked also with lspci):
> # cat /proc/interrupts
>           CPU0              CPU1
>  1:       1626          0        Phys-irq  i8042
>  6:          3          0        Phys-irq  floppy
>  8:          0          0        Phys-irq  rtc
>  9:          0          0        Phys-irq  acpi
> 14:         63          0        Phys-irq  ide0
> 16:          1          0        Phys-irq  libata, eth3
> 17:    6762583          0        Phys-irq  libata
> 18:      13789          0        Phys-irq  libata
> 19:   33459690          0        Phys-irq  eth1
> 20:   19864325          0        Phys-irq  sky2, eth0
> 21:  269250881          0        Phys-irq  wctdm
> 256:   77735119          0     Dynamic-irq  timer0
> 257:    3986325          0     Dynamic-irq  resched0
> 258:         37          0     Dynamic-irq  callfunc0
> 259:          0    4652748     Dynamic-irq  resched1
> 260:          0        139     Dynamic-irq  callfunc1
> 261:          0   28924306     Dynamic-irq  timer1
> 262:       1021          0     Dynamic-irq  xenbus

I've never seen cat /proc/interrupts output that looks like that...

waaaitaminute...

are you running this in a virtual machine? Or on a machine running
virtual machines?

-Stephen-