[OpenSIPS-Users] Possible memory leak related to AVPs
Răzvan Crainea
razvan at opensips.org
Thu Jun 18 14:37:25 CEST 2015
Hi, Mickael!
This is not entirely true - you can define AVPs with the integer value
0. Those will have avp->flags == 0 and avp->data == 0.
What I'd do, is to note down the avp->id value of those AVPs and then
try to see their names. To do that, you'd have to look into the avp_map
and avp_map_shm maps to see the corresponding name for that id.
Alternatively you can call in your script the avp_print() method, which
prints all the AVPs for a specific transaction along with their id and
names. Let me know how this goes.
Best regards,
Răzvan Crainea
OpenSIPS Solutions
www.opensips-solutions.com
On 06/18/2015 12:48 PM, Mickael Marrache wrote:
> To add more information, I remember there was no way to define an
> integer AVP with value 0. I see a lot of such AVPs.
>
> On Thu, Jun 18, 2015 at 12:03 PM, Mickael Marrache
> <mickaelmarrache at gmail.com <mailto:mickaelmarrache at gmail.com>> wrote:
>
> Correction of my previous email.
>
> When I said I found AVPs without data, I may be wrong. avp->flags
> == 0 probably means the AVP data is an integer. So, that explains
> the weird values (e.g. 0x8000) I tried to interpret as memory
> addresses.
>
> Mickael
>
> On Thu, Jun 18, 2015 at 11:12 AM, Mickael Marrache
> <mickaelmarrache at gmail.com <mailto:mickaelmarrache at gmail.com>> wrote:
>
> Hi Razvan,
>
> Here is what I've done.
>
> I took a core dump of the attendant process. Then, I stopped
> OpenSIPS so that it frees allocated fragments, and at the end
> lists all fragments that are still allocated.
>
> In this list of fragments, I can see a lot of AVPs.
>
> I see some AVPs without data (avp->data == NULL, avp->flags ==
> 0). But something is weird, it looks like that all AVPs that
> don't have data have the same id. It looks like duplicate AVPs
> (in different memory fragments).
>
> Some AVPs do have data and have a format that looks valid.
>
> Some AVPs looks corrupted. For example, I found an AVP with
> same ID as the AVPs without data, but avp->data == 0x8000
> which looks completely wrong.
>
> Thanks,
> Mickael
>
> On Thu, Jun 18, 2015 at 10:11 AM, Mickael Marrache
> <mickaelmarrache at gmail.com <mailto:mickaelmarrache at gmail.com>>
> wrote:
>
> Hi Razvan,
>
> I created a core dump for the attendant process. Is it
> enough or we also need core dumps for other processes?
> Note that the leak appears in shared memory.
>
> We do use QM debug for this version, this is how I
> discovered the remaining AVPs at shutdown where the
> remaining allocated memory fragments are listed.
>
> Do you know where I should look for the AVPs in the core dump?
>
> Thanks,
> Mickael
>
> On Tue, Jun 16, 2015 at 5:11 PM, Răzvan Crainea
> <razvan at opensips.org <mailto:razvan at opensips.org>> wrote:
>
> Hi, Mickael!
>
> I don't know what exactly might cause the leak. What
> you can do is to try to get a core dump (using tools
> like gcore) during low (or unexisting) traffic and try
> to see what do the AVPs that are leaking contain. Are
> you using QM debug?
>
> Best regards,
>
> Răzvan Crainea
> OpenSIPS Solutions
> www.opensips-solutions.com
> <http://www.opensips-solutions.com>
>
> On 05/27/2015 12:37 PM, Mickael Marrache wrote:
>> Any idea? Is there something that may help finding
>> the leak cause?
>>
>> On Tue, May 19, 2015 at 1:17 PM, Mickael Marrache
>> <mickaelmarrache at gmail.com
>> <mailto:mickaelmarrache at gmail.com>> wrote:
>>
>> Any idea what we should do?
>>
>> I may be doing something wrong but I don't
>> remember I had to take care of memory management
>> when dealing with AVPs.
>>
>> Am I right?
>>
>> On Mon, May 18, 2015 at 12:08 PM, Mickael
>> Marrache <mickaelmarrache at gmail.com
>> <mailto:mickaelmarrache at gmail.com>> wrote:
>>
>> Hi,
>>
>> We use customized sources based on 1.11.2.
>>
>> However, we never modified the sources
>> related to AVP.
>>
>> Mickael
>>
>> On Mon, May 18, 2015 at 12:03 PM,
>> Bogdan-Andrei Iancu <bogdan at opensips.org
>> <mailto:bogdan at opensips.org>> wrote:
>>
>> Hi Mickael,
>>
>> If you do not have any SIP message or
>> transaction under processing, and still
>> have AVPs in memory....well, it looks
>> like a leak to me.
>>
>> What OpenSIPS version do you have ?
>>
>> Regards,
>>
>> Bogdan-Andrei Iancu
>> OpenSIPS Founder and Developer
>> http://www.opensips-solutions.com
>>
>> On 17.05.2015 11:55, Mickael Marrache wrote:
>>> Hi,
>>>
>>> Here is what I've done:
>>>
>>> 1) Ensured OpenSIPS doesn't receive any
>>> calls.
>>> 2) Waited for all calls to terminate.
>>> 3) Checked that the inuse_transaction is 0.
>>> 4) Stopped OpenSIPS.
>>>
>>> I confirm there are still a lot of AVPs
>>> in memory.
>>>
>>> Who is supposed to free these AVPs? Is
>>> it a memory leak?
>>>
>>> Thanks,
>>> Mickael
>>>
>>> On Fri, May 15, 2015 at 12:48 PM,
>>> Bogdan-Andrei Iancu <bogdan at opensips.org
>>> <mailto:bogdan at opensips.org>> wrote:
>>>
>>> Hi Michael,
>>>
>>> You can do "opensipsctl fifo
>>> get_statistics tm:" and you have the
>>> "inuse_transaction" statistic :
>>> http://www.opensips.org/html/docs/modules/1.11.x/tm.html#id296307
>>>
>>> Regards,
>>>
>>> Bogdan-Andrei Iancu
>>> OpenSIPS Founder and Developer
>>> http://www.opensips-solutions.com
>>>
>>> On 14.05.2015 09:45, Mickael
>>> Marrache wrote:
>>>>
>>>> I'm not sure there were no
>>>> transactions in memory at shutdown.
>>>>
>>>> How can I check this? I didn't find
>>>> an MI command for that.
>>>>
>>>> *From:*Bogdan-Andrei Iancu
>>>> [mailto:bogdan at opensips.org]
>>>> *Sent:* Wednesday, May 13, 2015 6:44 PM
>>>> *To:* OpenSIPS users mailling list;
>>>> mickaelmarrache at gmail.com
>>>> <mailto:mickaelmarrache at gmail.com>
>>>> *Subject:* Re: [OpenSIPS-Users]
>>>> Possible memory leak related to AVPs
>>>>
>>>> Hi Mickael,
>>>>
>>>> What means "a lot" :) ? I'm asking
>>>> as if you have 100 transactions in
>>>> memory (when doing shutdown) and
>>>> you use ~10 AVPs per INVITE in
>>>> script -> you have 1000 AVPs in mem.
>>>>
>>>> When doing the shutdown, are any
>>>> transaction in memory ? (with no
>>>> active transactions in mem, there
>>>> are no AVPs in mem).
>>>>
>>>> Regards,
>>>>
>>>> Bogdan-Andrei Iancu
>>>> OpenSIPS Founder and Developer
>>>> http://www.opensips-solutions.com
>>>>
>>>> On 13.05.2015 17:53, Mickael
>>>> Marrache wrote:
>>>>
>>>> Hi,
>>>>
>>>> We have a memory leak and are
>>>> trying to find the cause.
>>>>
>>>> We compiled the call with
>>>> memory debugging and at
>>>> shutdown, we see a lot of
>>>> allocated AVPs that are not
>>>> released.
>>>>
>>>> opensips[27560]: 277067. N
>>>> address=0x2aae957a0330
>>>> frag=0x2aae957a0300 size=24 used=1
>>>>
>>>> opensips[27560]: alloc'd from
>>>> usr_avp.c: new_avp(119)
>>>>
>>>> opensips[27560]: start
>>>> check=f0f0f0f0f0f0f0f0, end
>>>> check= c0c0c0c0c0c0c0c0,
>>>> abcdefedabcdefed
>>>>
>>>> Is it possible to have a memory
>>>> leak related to AVPs? IIRC
>>>> OpenSIPS handles it internally.
>>>>
>>>> Thanks,
>>>>
>>>> Mickael
>>>>
>>>>
>>>>
>>>>
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>>>>
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>>>>
>>>
>>>
>>
>>
>>
>>
>>
>>
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