[asterisk-users] zaptel huge irq problem

Mon May 14 09:43:02 MST 2007

Thanks Michael,

I've already been through all that unfortunately, and I have a SATA 
drive, so no UDMA mode 2 as far as I know. I'm currently trying 
everything again anyway, but i doubt it will work if nothing worked the 
first time.

Anyone would know of issues with XEN or SMP (or both) kernel? Do dual 
core AMD64 processors have issues?

François.

Michael L. Young wrote:
> François,
>
> I too had a similar problem and found the information on this page helpful:
> http://www.voip-info.org/wiki/view/Asterisk+PCI+bus+Troubleshooting
>
> What ended up working for me was changing the UDMA to mode 2 for the hard
> drive.  Once I did that, this card has worked perfectly for me.
>
> Michael L. Young
>
>   
>> -----Original Message-----
>> From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-
>> bounces at lists.digium.com] On Behalf Of François Delawarde
>> Sent: Monday, May 14, 2007 10:24 AM
>> To: asterisk-users at lists.digium.com
>> Subject: [asterisk-users] zaptel huge irq problem
>>
>> 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.
>>
>> Any idea about this? Is it possible to force the timer to ztdummy (RTC
>> timer) when you have a zap card plugged in? It's the only thing i could
>> try to make it work.
>>
>> Thanks,
>> François.
>>
>> Just in case:
>>
>> - Linux 2.6.18 with debian patches and xen enabled, asterisk running on
>> dom0.
>>
>> - Here is my zttest results under a bit of load:
>> # ./zttest
>> Opened pseudo zap interface, measuring accuracy...
>> 99.609375% 99.609375% 99.218750% 99.316406% 99.804688% 99.414062%
>> 99.121094%
>> 99.511719% 99.121094% 99.316406% 99.707031% 99.707031% 98.730469%
>> 99.414062% 99.902344%
>> 99.218750% 100.000000% 99.414062% 98.828125% 99.218750% 99.316406%
>> 98.449707% 100.000000%
>>
>>
>> - 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
>> 263:          0          0     Dynamic-irq  console
>> NMI:          0          0
>> LOC:          0          0
>> ERR:          0
>> MIS:          0
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-- 

 _________________________

François Delawarde

Ingeniero de red

Tel: 918.03.92.51

E-mail: fdelawarde at wirelessmundi.com <mailto:fdelawarde at wirelessmundi.com>

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