[asterisk-users] zaptel huge irq problem

Mon May 14 14:12:49 MST 2007

You didn't even read the thread before replying.  And for what it is 
worth, we at Digium are very anxious to solve any sort of IRQ problems 
that you (or others) might have.

Matthew Fredrickson

On May 14, 2007, at 1:43 PM, Salvatore Giudice wrote:

> Try switching to a Sangoma card. You won’t have anymore  IRQ issues 
> once you abandon Digium hardware.
>  
> --------------------------------------------------
>  Salvatore Giudice
>  Salvatore.Giudice at VoIPSecurityTraining.com
>
>  VoIP Security Training, LLC
>  http://VoIPSecurityTraining.com
>
>  848 N. Rainbow Blvd. #1676
>  Las Vegas, NV 89107
>  Phone: (617) 959-7625
>  Fax: (214) 279-2906
>  
> 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 12:43 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] zaptel huge irq problem
>  
> 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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