[Asterisk-Users] E1 PRI slips on TE410P

Tue Nov 15 11:38:08 MST 2005

Hi George,

  Thanks for the tip, now /proc/interrupts looks like this:

           CPU0       CPU1
  0:      61155          0          XT-PIC  timer
  1:          2          0          XT-PIC  keyboard
  2:          0          0          XT-PIC  cascade
  8:          1          0          XT-PIC  rtc
 10:     590503          0          XT-PIC  wct4xxp
 11:       2940          0          XT-PIC  eth0
 14:      43026          0          XT-PIC  ide0
 15:        136          0          XT-PIC  ide1
NMI:          0          0
LOC:      61080      61100
ERR:          0
MIS:          0

  Now lets see if the issue continues. I've also disabled HT on the box.

Nir S

  _____  

From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of George Vagenas
Sent: Tuesday, November 15, 2005 7:58 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] E1 PRI slips on TE410P

The other possible way to change IRQ is to change the PCI slot. Why don't
you run zttool and check for missing interrupt? Also zttest could be a good
idea to check for E1 slip frames 

On 11/15/05, Nir Simionovich - CTO <nirs at dimitel.com> wrote: 

Hi George,

  Well, here are my findings:

  1. the card doesn't seem to share an IRQ with another device, at least on
the surface visible to me.
  2. APIC can't be disabled on this board, as it's a fairly old (about 18 
months old) Intel XEON board.

  Is there a way to define the IRQ to load the board one via the command
line?

Nir S

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of George
Sent: Tuesday, November 15, 2005 11:04 AM 
To: Asterisk Users Mailing List - Non-Commercial Discussion; 'Asterisk Users
Mailing List - Non-Commercial Discussion'
Subject: Re: [Asterisk-Users] E1 PRI slips on TE410P

Hi Nir,

The wct4xxxp is in a different IRQ than ide0 and ide1 but the issue is that 
you have enabled the APIC (which extends the IRQ table). In reality  the
card might share IRQ with another device. My advice is to disable APIC and
then check again what IRQ the card gets. If you see that the card shares an 
IRQ with another device try if its possible to disable this device , for
example USB.

George

At 10:42 AM 2005-11-15, Nir Simionovich - CTO wrote:
>Hi All,
>
>   I've recently encountered a very funny problem, which wasn't 
>happening in the past. I will describe this in detail:
>
>During the past 4 weeks, our production Asterisk box had been
>experiencing PRI (E1 lines) slips over and over at random intervals.
>When digging into the available information and debug logs, I've 
>noticed HDLC hang-ups, followed by a complete reset of the line.
>
>   Now, according to the lists and wiki, this is most probably caused
>by an IRQ issue between the TE410P and the onboard IDE controller. So, 
>I looked into /proc/interrupts to find the following:
>
>[root at ivr00 root]# cat /proc/interrupts
>            CPU0       CPU1
>   0:  196927300        456    IO-APIC-edge  timer
>   1:          2          0    IO-APIC-edge  keyboard
>   2:          0          0          XT-PIC  cascade
>   8:          1          0    IO-APIC-edge  rtc
>  14:    6152062         22    IO-APIC-edge  ide0
>  15:        137          1    IO-APIC-edge  ide1
>  16:          0          0   IO-APIC-level  usb-uhci
>  18:          0          0   IO-APIC-level  usb-uhci
>  19:          0          0   IO-APIC-level  usb-uhci
>  20:   21986877         21   IO-APIC-level  eth0
>  54: 1965865547       4505   IO-APIC-level  wct4xxp
>NMI:          0          0
>LOC:  196918032  196918689
>ERR:          0
>MIS:          0
>
>   As you can surely see, the wct4xxp driver and the ide0 and ide1 are 
>totally on different interrupts. The IDE drives are also set to do
>UDMA2, as described in many other places.
>
>   The board is a Dual XEON 2.8Ghz Intel board, with 1GB RAM and a
>single IDE 80GB Hard drive. 
>
>   Any input would be highly appreciated.
>
>Regards,
>   Nir S
>
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