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Re: [Astlinux-users] Astlinux 0.4.5 on Via EN12000EG - asteriskSIGSEGV
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From: Ioan I. <ioa...@mo...> - 2007-05-23 20:30:35
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Hello Kris,
Thank you for your quick answer and tips. Still I do not think it is a
problem on ulimit.
I verify fds for asterisk pid and was less that 1024. Also, for generating
the core I run unlimit -c unlimited....but this is just to get the core. How
to debug it?
Regarding swap - I see (with free) that there is plenty of free memory. So
no need for a swap. Or am I wrong?
Bellow you have some data from such a crash:
------------------------------------------------------------------------
pbx ~ # asterisk -rx "show channels"; free
Channel Location State Application(Data)
0 active channels
0 active calls
total used free shared buffers
Mem: 971136 57964 913172 0 8304
Swap: 0 0 0
Total: 971136 57964 913172
pbx ~ # asterisk -rx "show channels" | grep "active call"; free; uptime
10 active calls
total used free shared buffers
Mem: 971136 58808 912328 0 8304
Swap: 0 0 0
Total: 971136 58808 912328
22:16:56 up 7:42, load average: 0.09, 0.02, 0.00
pbx ~ # asterisk -rx "show channels" | grep "active call"; free; uptime
20 active calls
total used free shared buffers
Mem: 971136 59656 911480 0 8304
Swap: 0 0 0
Total: 971136 59656 911480
22:17:22 up 7:42, load average: 0.11, 0.03, 0.00
pbx ~ # asterisk -rx "show channels" | grep "active call"; free; uptime
31 active calls
total used free shared buffers
Mem: 971136 60596 910540 0 8304
Swap: 0 0 0
Total: 971136 60596 910540
22:17:46 up 7:43, load average: 0.14, 0.05, 0.01
pbx ~ # asterisk -rx "show channels" | grep "active call"; free; uptime
35 active calls
total used free shared buffers
Mem: 971136 60940 910196 0 8304
Swap: 0 0 0
Total: 971136 60940 910196
22:17:58 up 7:43, load average: 0.11, 0.04, 0.01
pbx ~ # asterisk -rx "show channels" | grep "active call"; free; uptime
41 active calls
total used free shared buffers
Mem: 971136 61580 909556 0 8304
Swap: 0 0 0
Total: 971136 61580 909556
22:18:14 up 7:43, load average: 0.08, 0.04, 0.00
pbx ~ # asterisk -rx "show channels" | grep "active call"; free; uptime
42 active calls
total used free shared buffers
Mem: 971136 61660 909476 0 8304
Swap: 0 0 0
Total: 971136 61660 909476
22:18:29 up 7:44, load average: 0.06, 0.04, 0.00
pbx ~ # asterisk -rx "show channels" | grep "active call"; free; uptime
43 active calls
total used free shared buffers
Mem: 971136 61752 909384 0 8304
Swap: 0 0 0
Total: 971136 61752 909384
22:18:37 up 7:44, load average: 0.05, 0.04, 0.00
pbx ~ # asterisk -rx "show channels" | grep "active call"; free; uptime
44 active calls
total used free shared buffers
Mem: 971136 61832 909304 0 8304
Swap: 0 0 0
Total: 971136 61832 909304
22:18:44 up 7:44, load average: 0.05, 0.04, 0.00
pbx ~ # asterisk -rx "show channels" | grep "active call"; free; uptime
45 active calls
total used free shared buffers
Mem: 971136 61924 909212 0 8304
Swap: 0 0 0
Total: 971136 61924 909212
22:18:53 up 7:44, load average: 0.04, 0.03, 0.00
pbx ~ # asterisk -rx "show channels" | grep "active call"; free; uptime
46 active calls
total used free shared buffers
Mem: 971136 62004 909132 0 8304
Swap: 0 0 0
Total: 971136 62004 909132
22:18:59 up 7:44, load average: 0.03, 0.03, 0.00
--- When I tried 47th call, asterisk crashed ---
pbx ~ # asterisk -rx "show channels" | grep "active call"; free; uptime
total used free shared buffers
Mem: 971136 55480 915656 0 8304
Swap: 0 0 0
Total: 971136 55480 915656
22:19:05 up 7:44, load average: 0.51, 0.13, 0.03
pbx ~ #
------------------------------------------------------------------------
What do you think?
BR,
Ioan.
----- Original Message -----
From: "Kristian Kielhofner" <kri...@gm...>
To: "AstLinux Users Mailing List" <ast...@li...>
Sent: Wednesday, May 23, 2007 11:01 PM
Subject: Re: [Astlinux-users] Astlinux 0.4.5 on Via EN12000EG -
asteriskSIGSEGV
> On 5/23/07, Ioan Indreias <ioa...@mo...> wrote:
>> Hello,
>>
>> I am just installed Astlinux 0.4.5 on a Via EPIA EN12000EG Mini ITX
>> fanless
>> system and trying to made some load tests.
>>
>> As this is our test system we have 1 GB memory and we run with a 40 GB
>> SATA
>> drive (boot=sda1 and kd=sda2).
>>
>> First I had to insert in rc.modules via-velocity module in order to
>> recognize the Ethernet Gigabit Via VT6120/VT6121/VT6122. (this is
>> mentioned
>> here just for reference).
>>
>> Next I tried to load a little bit the system and found that asterisk
>> receive
>> a SIGSEGV signal and get "Killed" (literraly this is what I receive on
>> CLI).
>> Using Sipp on another machine (with rtp_echo) and generating 3 minutes
>> calls
>> (with .call files I generate a SIP call to a WaitMusicOnHold(300)
>> extension)
>> I found that at near 44-46 simultaneous calls asterisk crashed without
>> any
>> visible indications in logs (with verbose and debug set to 10).
>>
>> As I not a Linux expert and not very familiar with Astlinux the only idea
>> was to use strace and here is the output:
>>
>> pbx ~ # uname -a
>> Linux pbx 2.6.16.12 #1 SMP PREEMPT Sun Apr 22 12:16:58 EDT 2007 i686
>> unknown
>> pbx ~ # strace -p 31201
>> ...
>> --- SIGRT_1 (Unknown signal 33) @ 0 (0) ---
>> sigreturn() = ? (mask now ~[TRAP KILL STOP])
>> getppid() = 31200
>> wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|__WCLONE,
>> NULL) =
>> 31563
>> munmap(0xb7e00000, 2097152) = 0
>> --- SIGSEGV (Segmentation fault) @ 0 (0) ---
>> Process 31201 detached
>>
>> Do you have any recommendations on how to trace the problem? How could be
>> analyzed a core file on Astlinux?
>>
>> Best regards,
>> Ioan Indreias
>> www.modulo.ro
>>
>
> Ioan,
>
> I like load tests! Thanks for asking what to do about this - make
> sure that you ask us any other questions you might have.
>
> When doing load tests you probably have to tweak ulimit before you
> start Asterisk:
>
> http://www.voip-info.org/wiki-Asterisk+debugging#ulimit
> http://www.voip-info.org/wiki/view/Asterisk+dimensioning
>
> I have always wanted to work this into AstLinux somehow...
> Unfortunately because most systems don't have any swap space we have
> to be very careful with memory consumption.
>
> However, if you want to add some swap space (if you need it), all of
> the utils are there:
>
> mkswap
> swapon
> swapoff
>
> --
> Kristian Kielhofner
>
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