[Asterisk-Users] Dual T400P, SMP, performance issues

[Alex Zarubin]

Mark & Oliver,

It is too early to say, but the picture is different now. Our dual CPU,
dual T400P box is up for 4 days, under the load of 10 - 100 simultaneous
PRI -> SIP calls. We installed 2.4.21 #2 SMP (it was still freezing after
that) and, what I think made the difference, recompiled
zaptel-libpri-asterisk
with gcc 3.3.

The problem, on the way, was that asterisk wouldn't start after that. It was
crashing while loading mp3 and lpc10 codecs. We put 'noload' for these two
into modules.conf - temporary solution, of course.

There are problems, still, with multiple connections at the same time.
Windows
to the box get frozen for a sec, D-channel error messages. The following
messages are dumped into /var/log/messages. What do you think?

Jun 24 18:23:25 mspgate03 kernel:
Jun 24 18:23:25 mspgate03 kernel: wait_on_irq, CPU 1:
Jun 24 18:23:25 mspgate03 kernel: irq:  1 [ 0 0 1 0 ]
Jun 24 18:23:25 mspgate03 kernel: bh:   0 [ 0 0 0 0 ]
Jun 24 18:23:25 mspgate03 kernel: Stack dumps:
Jun 24 18:23:25 mspgate03 kernel: CPU 0:02000000 0000036f 00e14603
18020000 03000010 00006647 008e0200 48030000
Jun 24 18:23:25 mspgate03 kernel:        00000078 001ffa02 5b490300
06000000 000001c7 074e0308 00001afe 01c74d03
Jun 24 18:23:25 mspgate03 kernel:        23020000 d7080000 e1000001
09000000 000001d7 f5030001 04000023 09300207
Jun 24 18:23:25 mspgate03 kernel: Call Trace:    [<f89bd281>]
[<f89bb132>] [<f89bbb47>] [<f89bd281>] [<f89bd281>]
Jun 24 18:23:25 mspgate03 kernel:   [<f89bb132>] [<f89bd281>]
[<f89bd281>] [<f89bb132>] [<f89bbb47>] [<f89e7737>]
Jun 24 18:23:25 mspgate03 kernel:   [<f89aa80a>] [<f89aa80a>]
[<c01feee4>] [<f89e7737>] [<c01f4eae>] [<c010a98e>]
Jun 24 18:23:25 mspgate03 kernel:   [<c020d122>] [<c010abe3>]
[<c020d122>] [<c020d550>] [<c010a98e>] [<c020d550>]
Jun 24 18:23:25 mspgate03 kernel:   [<c010abfe>] [<c01f0919>]
[<c01f0919>] [<c022a1ef>] [<c022a1ef>] [<c022a5f5>]
Jun 24 18:23:25 mspgate03 kernel:   [<f89bd281>] [<f89bd281>]
[<f89bd281>] [<f89bb132>] [<f89bd510>] [<f89e7737>]
Jun 24 18:23:25 mspgate03 kernel:   [<c022a5f5>] [<c01f0ffd>]
[<c01f112e>] [<c01f53c2>] [<c012005b>] [<c010abfe>]
Jun 24 18:23:25 mspgate03 kernel:   [<c015147a>] [<c01509dc>]
[<c0147460>] [<c0147fb8>] [<f89e7737>] [<f89e7737>]
Jun 24 18:23:25 mspgate03 kernel:   [<c01f0998>] [<c01f0fac>]
[<c01f112e>] [<c01f53c2>] [<c0117fce>] [<c0117ef0>]
Jun 24 18:23:25 mspgate03 kernel:   [<c0144a64>] [<c01246db>]
[<c0109023>]
Jun 24 18:23:25 mspgate03 kernel:
Jun 24 18:23:25 mspgate03 kernel: CPU 2:00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
Jun 24 18:23:25 mspgate03 kernel:        00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
Jun 24 18:23:25 mspgate03 kernel:        00000000 00000000 00000000
00000000 00000000 00000000 00000000 00000000
Jun 24 18:23:25 mspgate03 kernel: Call Trace:
Jun 24 18:23:25 mspgate03 kernel:
Jun 24 18:23:25 mspgate03 kernel: CPU 3:00000070 cce30002 0cd80000
08fa0000 69530000 656c706d 6c616e41 73697379
Jun 24 18:23:25 mspgate03 kernel:        0009a700 46534c00 65746e69
6c6f7072 32657461 6e655f61 0a810063 69530000
Jun 24 18:23:25 mspgate03 kernel:        656c706d 65746e49 6c6f7072
4c657461 39004653 5300000b 6c706d69 66736c65
Jun 24 18:23:25 mspgate03 kernel: Call Trace:
Jun 24 18:23:25 mspgate03 kernel:
Jun 24 18:23:25 mspgate03 kernel: CPU 1:e14d5eac c025c896 00000001
00000001 ffffffff 00000001 c010a7c2 c025c8ab
Jun 24 18:23:25 mspgate03 kernel:        00000000 f2d92124 e14d5f00
c0191104 00000500 00001805 000000bf 00008a01
Jun 24 18:23:25 mspgate03 kernel:        7f1c0300 01000415 1a131100
170f1200 00000000 e14d4000 00000000 00000000
Jun 24 18:23:25 mspgate03 kernel: Call Trace:    [<c010a7c2>]
[<c0191104>] [<c01913d4>] [<c018e1e2>] [<c014c2c7>]
Jun 24 18:23:25 mspgate03 kernel:   [<c0109023>]
Jun 24 18:23:25 mspgate03 kernel:

Thank you.
Alex Zarubin

-----Original Message-----
From: The Traveller [mailto:traveler at xs4all.nl]
Sent: Tuesday, June 17, 2003 3:10 PM
To: asterisk-users at lists.digium.com
Subject: Re: [Asterisk-Users] Dual T400P, SMP, performance issues


On Tue, Jun 17, 2003 at 20:54:39 +0200, The Traveller wrote:
> 
> BTW: As I reported in my previous mail to the list, I've now installed
kernel
> 2.4.21-rc2 with ACPI-patch on the box with the E100P.  I've been trying
> very hard to reproduce a freeze with this kernel, but haven't succeeded
yet.
[...]

Ok, it crashed again, so that wasn't it either.  What I did to trigger
it was using the auto-dialer to loop as many calls to app_datetime out
and then back over the same E-1 as it would take, queueing the calls
to "/var/spool/asterisk/outgoing/" 14 at a time.  It froze at the first
attempt.  The "good" news is that it produced a visible kernel-panic.
this time.  My guess is that you only don't see it if the console
screensaver has already come on while it happens.

It read something like "Unable to handle kernel paging request" and
happened in the swapper-task.  As usual, it dumped a lot of numbers on the
screen, which I didn't want to write down.

Mark: If you want my help in debugging this, I'll hook it up to a
serial console, trigger the crash and provide you with the exact
panic, together with the ksyms and modules-info to trace it.



    Grtz,

       Oliver
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