[asterisk-users] Bridged PRI calls - processor involvement?

[Steve Hanselman]

It probably did but we run in updates every week and nobody can state
exactly when the problem started only "a few weeks ago" - not very
helpful.

I can see that when I hear the issue the iowait time is high on the
processor.

Steve
-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Matthew
Fredrickson
Sent: 08 June 2007 15:43
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Bridged PRI calls - processor involvement?

Did it accompany an update you made?  If you can find out what version 
the problem started occurring, that would help in fixing the problem.

Matthew Fredrickson
Software/Hardware Engineer
Digium, Inc.

On Jun 8, 2007, at 2:59 AM, Steve Hanselman wrote:

> The setup.
>
> Asterisk is on a 3G Zeon Dell 2850 running Fedora Core 5/6 (all yum
> updates applied), the TE410 lives on it's own interrupt.
> Asterisk sits between our telco and a PRI enabled PBX.
> These are the relevant versions installed:
>
> Linux: 2.6.20-1.2316.fc5smp
> Zaptel: 1:1.4.2.1-34.fc5
> Asterisk: 1:1.4.0-34.fc5.at
> Libpri: 1:1.4.0-16.fc5.at
> Wildcard details:
> Found TE4XXP at base address fe3ffc00, remapped to f88bec00
> TE4XXP version c01a016a, burst OFF, slip debug: OFF
> Octasic optimized!
> FALC version: 00000005, Board ID: 00
> Reg 0: 0x377bb400
> Reg 1: 0x377bb000
> Reg 2: 0xffffffff
> Reg 3: 0x00000000
> Reg 4: 0x00000001
> Reg 5: 0x00000000
> Reg 6: 0xc01a016a
> Reg 7: 0x00001f00
> Reg 8: 0x00000000
> Reg 9: 0x00ff0000
> Reg 10: 0x0000004a
> TTE4XXP: Launching card: 0
> TE4XXP: Setting up global serial parameters
> Found a Wildcard: Wildcard TE410P (3rd Gen)
> TE4XXP: Span 1 configured for CCS/HDB3/CRC4
> TE4XXP: Span 2 configured for CCS/HDB3/CRC4
>
>
>
> The problem:
>
> At random points during calls we lose 1-3 seconds of speech (both ways
> both callee and caller), this can be replicated (or at least a very 
> good
> approximation!) by generating a high level of interrupt/cpu activity
> (for instance copying data from a USB caddy as we tried the other day 
> in
> an attempt to reproduce this more reliably).
>
> The calls are bridged PRI:PRI calls, no VOIP involvement.
>
> This was not a problem until approx 3-4 weeks ago, but I can't tie it
> down to an exact date.
>
> Steve
>
>
>> Interrupt sharing is not a problem anymore with those cards.  What
>> version of zaptel did you try installing?  Can you explain more about
>> your problems?  Also, your configuration and setup would help out as
>> well.
>>
>> ---
>> Matthew Fredrickson
>> Digium, Inc.
>
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